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  • 1. Allan, James
    et al.
    Aslam, Jay
    Azzopardi, Leif
    Belkin, Nick
    Borlund, Pia
    Bruza, Peter
    Callan, Jamie
    Carman, Mark
    Clarke, Charles L.A.
    Craswell, Nick
    Croft, W. Bruce
    Culpepper, J. Shane
    Diaz, Fernando
    Dumais, Susan
    Ferro, Nicola
    Geva, Shlomo
    Gonzalo, Julio
    Hawking, David
    Jarvelin, Kalervo
    Jones, Gareth
    Jones, Rosie
    Kamps, Jaap
    Kando, Noriko
    Kanoulas, Evangelos
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Kelly, Diane
    Lease, Matthew
    Lin, Jimmy
    Mizzaro, Stefano
    Moffat, Alistair
    Murdock, Vanessa
    Oard, Douglas W.
    Rijke, Maarten de
    Sakai, Tetsuya
    Sanderson, Mark
    Scholer, Falk
    Si, Luo
    Thom, James A.
    Thomas, Paul
    Trotman, Andrew
    Turpin, Andrew
    Vries, Arjen P. de
    Webber, William
    Zhang, Xiuzhen (Jenny)
    Zhang, Yi
    Frontiers, Challenges, and Opportunities for Information Retrieval – Report from SWIRL 2012, The Second Strategic Workshop on Information Retrieval in Lorne2012In: SIGIR Forum, ISSN 0163-5840, Vol. 46, no 1, p. 2-32Article in journal (Refereed)
    Abstract [en]

    During a three-day workshop in February 2012, 45 Information Retrieval researchers met to discuss long-range challenges and opportunities within the field. The result of the workshop is a diverse set of research directions, project ideas, and challenge areas. This report describes the workshop format, provides summaries of broad themes that emerged, includes brief descriptions of all the ideas, and provides detailed discussion of six proposals that were voted "most interesting" by the participants. Key themes include the need to: move beyond ranked lists of documents to support richer dialog and presentation, represent the context of search and searchers, provide richer support for information seeking, enable retrieval of a wide range of structured and unstructured content, and develop new evaluation methodologies.

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  • 2.
    Almquist, Per
    et al.
    RISE, Swedish ICT, SICS. IAM.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS. IAM.
    Experiments to investigate the utility of nearest neighbour metrics based on linguistically informed features for detecting textual plagiarism2011Conference paper (Refereed)
    Abstract [en]

    Plagiarism detection is a challenge for linguistic models — most current implemented models use simple occurrence statistics for linguistic items. In this paper we report two experiments related to plagiarism detection where we use a model for distributional semantics and of sentence stylistics to compare sentence by sentence the likelihood of a text being partly plagiarised. The result of the comparison are displayed for visual inspection by a plagiarism assessor.

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  • 3. Alonso, O.
    et al.
    Kamps, J.
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS. Gavagai .
    Foreword2014In: ESAIR 2014 - Proceedings of the 7th International Workshop on Exploiting Semantic Annotations in Information Retrieval, co-located with CIKM 2014, Association for Computing Machinery (ACM), 2014Conference paper (Refereed)
  • 4. Alonso, O.a
    et al.
    Kamps, J.b
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Seventh workshop on exploiting semantic annotations in information retrieval (ESAIR’14)2014In: CIKM 2014 - Proceedings of the 2014 ACM International Conference on Information and Knowledge Management, Association for Computing Machinery (ACM), 2014, p. 2094-2095Conference paper (Refereed)
    Abstract [en]

    There is an increasing amount of structure on the Web as a result of modern Web languages, user tagging and annotation, emerging robust NLP tools, and an ever growing volume of linked data. These meaningful, semantic, annotations hold the promise to significantly enhance information access, by enhancing the depth of analysis of today’s systems. The goal of the ESAIR’14 workshop remains to advance the general research agenda on this core problem, with an explicit focus on one of the most challenging aspects to address in the coming years. The main remaining challenge is on the user’s side-the potential of rich document annotations can only be realized if matched by more articulate queries exploiting these powerful retrieval cues-and a more dynamic approach is emerging by exploiting new forms of query autosuggest. How can the query suggestion paradigm be used to encourage searcher to articulate longer queries, with concepts and relations linking their statement of request to existing semantic models? How do entity results and social network data in "graph search" change the classic division between searchers and information and lead to extreme personalization-are you the query? How to leverage transaction logs and recommendation, and how adaptive should we make the system? What are the privacy ramifications and the UX aspects-how to not creep out users?

  • 5. Alonso, Omar
    et al.
    Kamps, Jaap
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Fourth workshop on Exploiting Semantic Annotations in Information Retrieval (ESAIR)2011Conference paper (Refereed)
    Abstract [en]

    There is an increasing amount of structure on the Web as a result of modern Web languages, user tagging and annotation, and emerg- ing robust NLP tools. These meaningful, semantic, annotations hold the promise to significantly enhance information access, by enhancing the depth of analysis of today’s systems. Currently, we have only started exploring the possibilities and only begin to un- derstand how these valuable semantic cues can be put to fruitful use. Unleashing the potential of semantic annotations requires us to think outside the box, by combining the insights of natural lan- guage processing (NLP) to go beyond bags of words, the insights of databases (DB) to use structure efficiently even when aggregating over millions of records, the insights of information retrieval (IR) in effective goal-directed search and evaluation, and the insights of knowledge management (KM) to get grips on the greater whole. This workshop aims to bring together researchers from these dif- ferent disciplines and work together on one of the greatest chal- lenges in the years to come. The desired result of the workshop will be to gain concrete insight into the potential of semantic an- notations, and in concrete steps to take this research forward; to synchronize related research happening in NLP, DB, IR, and KM, in ways that combine the strengths of each discipline; and to have a lively, interactive workshop where every participant contributes actively and which inspires attendees to think freely and creatively, working towards a common goal.

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  • 6. Alonso, Omar
    et al.
    Kamps, Jaap
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Report on the Fourth Workshop on Exploiting Semantic Annotations in Information Retrieval (ESAIR 11)2012In: SIGIR Forum, ISSN 0163-5840, E-ISSN 1558-0229, Vol. 46, no 1, p. 56-64Article in journal (Refereed)
    Abstract [en]

    There is an increasing amount of structure on the Web as a result of modern Web languages, user tagging and annotation, and emerging robust NLP tools. These meaningful, semantic, annotations hold the promise to significantly enhance information access, by increasing the depth of analysis of today’s systems. Currently, we have only started to explore the possibilities and only begun to understand how these valuable semantic cues can be put to fruitful use. The workshop had an interactive format consisting of keynotes, boasters and posters, breakout groups and reports, and a final discussion, which was prolonged into the evening. There was a strong feeling that we made substantial progress. Specifically, each of the breakout groups contributed to our understanding of the way forward. First, annotations and use cases come in many different shapes and forms depending on the domain at hand, but at a higher level there are remarkable commonalities in annotation tools, indexing methods, user interfaces, and general methodology. Second, we got insights in the "exploitation" aspects, leading to a clear separation between the low-level annotations giving context or meaning to small units of information (e.g., NLP, sentiments, entities), and annotations bringing out the structure inherent in the data (e.g., sources, data schemas, document genres). Third, the plan to enrich ClueWeb with various document level (e.g., pagerank and spam scores, but also reading level) and lower level (e.g., named entities or sentiments) annotations was embraced by the workshop as a concrete next step to promote research in semantic annotations.

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  • 7. Amundin, Mats
    et al.
    Eklund, Robert
    Hållsten, Henrik
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Molinder, Lars
    A proposal to use distributional models to analyse dolphin vocalization2017In: 1st International Workshop on Vocal Interactivity in-and-between Humans, Animals and Robots, 2017, 2017Conference paper (Refereed)
    Abstract [en]

    This paper gives a brief introduction to the starting points of an experimental project to study dolphin communicative behaviour using distributional semantics, with methods implemented for the large scale study of human language.

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  • 8.
    Amundin, Mats
    et al.
    Kolmården Wildlife Park.
    Hållsten, Henrik
    Filosofiska institutionen, Stockholms universitet.
    Eklund, Robert
    Linköping University, Department of Culture and Communication, Language and Culture. Linköping University, Faculty of Arts and Sciences.
    Karlgren, Jussi
    Kungliga Tekniska Högskolan.
    Molinder, Lars
    Carnegie Investment Bank, Swedden.
    A proposal to use distributional models to analyse dolphin vocalisation2017In: Proceedings of the 1st International Workshop on Vocal Interactivity in-and-between Humans, Animals and Robots, VIHAR 2017 / [ed] Angela Dassow, Ricard Marxer & Roger K. Moore, 2017, p. 31-32Conference paper (Refereed)
    Abstract [en]

    This paper gives a brief introduction to the starting points of an experimental project to study dolphin communicative behaviour using distributional semantics, with methods implemented for the large scale study of human language.

    Download full text (pdf)
    A proposal to use distributional models to analyse dolphin vocalisation
  • 9. Andersdotter, Amelia
    et al.
    Bylund, Markus
    Ferm, Maria
    Häglund, Kjell
    Jardenberg, Joakim
    de Kaminski, Marcin
    Karlberg, Peter
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Larsson, Hanna
    Sundberg, Sam
    Sundin, Mathias
    Godtyckligt regelverk hotar friheten på nätet2013In: Dagens Nyheter, ISSN 1101-2447, no 2013-09-03Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Reglerna som möjliggör stängning av hemsidor på internet präglas av godtycke och otydlighet. Men det behöver inte vara särskilt svårt att skapa ett nytt och rättssäkert regelverk. Här har Sveriges EU-kommissionär Cecilia Malmström en viktig roll. Frågan är om hon tar sitt ansvar, skriver politiker och nätdebattörer.

  • 10. Andersson-Schwarz, Jonas
    et al.
    Christensen, Christian
    Eellend, Beate
    Hadley Kamptz, Isobel
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Thorslund, Ewa
    Wormbs, Nina
    KTH, School of Architecture and the Built Environment (ABE), Philosophy and History, History of Science, Technology and Environment.
    Transaktionsdimman på nätet hotar digitaliseringen2017In: Dagens Nyheter, ISSN 1101-2447Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    På nätet är vi inte längre bara medborgare eller kunder. Vi är också varor. De data vi läm-nar ut om oss själva är vad andra tjänar pengar på. Men vi vet inte vad de är värda ochvad vi skulle kunna begära i betalning. Transaktionsdimman på internet bör skingrasoch ersättas av transaktionstransparens, skriver sju medie- och it-debattörer.

  • 11. Argamon, Shlomo
    et al.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS. Userware.
    Shanahan, James G.
    Future short term goals of research in computational analysis of stylistics in text2005In: SIGIR Forum, Vol. 39, p. 17-18Article in journal (Refereed)
    Abstract [en]

    A short summary of findings from the 2005 SIGIR workshop on stylistics in text.

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  • 12. Argaw, A. A.
    et al.
    Asker, L.
    Cöster, R.
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Dictionary based Amharic - English information retrieval2004In: CEUR Workshop Proceedings, CEUR-WS , 2004Conference paper (Refereed)
    Abstract [en]

    We present two approaches to the Amharic - English bilingual track in CLEF 2004. Both experiments use a dictionary based approach to translate the Amharic queries into English Bags-of-words, but while one approach removes non-content bearing words from the Amharic queries based on their IDF value, the other uses a list of English stop words to perform the same task. The resulting translated (English) terms are then submitted to a retrieval engine that supports the Boolean and vector-space models. In our experiments, the second approach (based on a list of English stop words) performs slightly better than the one based on IDF values for the Amharic terms.

  • 13. Argaw, Atelach Alemu
    et al.
    Asker, Lars
    Cöster, Rickard
    RISE, Swedish ICT, SICS.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Dictionary-based Amharic-English information retrieval2005In: Multilingual Information Access for Text, Speech and Images, Third Workshop of the Cross-Language Evaluation (CLEF), 2005, 1Conference paper (Refereed)
  • 14. Argaw, Atelach Alemu
    et al.
    Asker, Lars
    Cöster, Rickard
    RISE, Swedish ICT, SICS.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Sahlgren, Magnus
    RISE - Research Institutes of Sweden (2017-2019), ICT, SICS.
    Dictionary-based Amharic-French Information Retrieval2006Conference paper (Refereed)
  • 15. Arnfalk, Peter
    et al.
    Hambreaus-Björling, Ylva
    Otterskog, Carolina
    Asp, Kenneth
    Aspegren, Anita
    Karagianni, Catherine
    Karlgren, Jussi
    RISE, Swedish ICT, SICS. Userware.
    Leckström, Marianne
    Lindberg, Emma
    Pamlin, Dennis
    Thorslund, Ewa
    Lindquist, Margareta
    Klingspor, Karin
    Ett miljöanpassat informationssamhälle 20202006Other (Other academic)
    Abstract [en]

    Rapport från regeringens IT-politiska strategigrupp.

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  • 16. Bardeli, Rolf
    et al.
    Boujemaa, Nozha
    Compañó, Ramón
    Doch, Christoph
    Geurts, Joost
    Gouraud, Henri
    Joly, Alexis
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    King, Paul
    Köhler, Joachim
    Kompatsiaris, Yiannis
    Le Moine, Jean-Yves
    Ortgies, Robert
    Point, Jean-Charles
    Rotenberg, Boris
    Rudström, Åsa
    RISE, Swedish ICT, SICS, Decisions, Networks and Analytics lab.
    Schreer, Oliver
    Sebe, Nicu
    Snoek, Cees
    CHORUS Deliverable 2.2: Second report - identification of multi-disciplinary key issues for gap analysis toward EU multimedia search engines roadmap2008Other (Other academic)
    Abstract [en]

    After addressing the state-of-the-art during the first year of Chorus and establishing the existing landscape in multimedia search engines, we have identified and analyzed gaps within European research effort during our second year. In this period we focused on three directions, notably technological issues, user-centred issues and use-cases and socio- economic and legal aspects. These were assessed by two central studies: firstly, a concerted vision of functional breakdown of generic multimedia search engine, and secondly, a representative use-cases descriptions with the related discussion on requirement for technological challenges. Both studies have been carried out in cooperation and consultation with the community at large through EC concertation meetings (multimedia search engines cluster), several meetings with our Think-Tank, presentations in international conferences, and surveys addressed to EU projects coordinators as well as National initiatives coordinators. Based on the obtained feedback we identified two types of gaps, namely core technological gaps that involve research challenges, and “enablers”, which are not necessarily technical research challenges, but have impact on innovation progress. New socio-economic trends are presented as well as emerging legal challenges.

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  • 17. Belkin, Nicholas J
    et al.
    Clarke, Charles L A
    Gao, Ning
    Kamps, Jaap
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Report on the SIGIR Workshop on “entertain me” : Supporting Complex Search Tasks2011In: SIGIR Forum, Vol. 45Article in journal (Refereed)
    Abstract [en]

    Researchers with a complex information need typically slice-and-dice their problem into several queries and subqueries, and laboriously combine the answers post hoc to solve their tasks. Consider planning a social event at the last day of SIGIR, in the unknown city of Beijing, factoring in distances, timing, and preferences on budget, cuisine, and entertainment. A system supporting the entire search episode should “know” a lot, either from profiles or implicit information, or from explicit information in the query or from feedback. This may lead to the (interactive) construction of a complexly structured query, but sometimes the most obvious query for a complex need is dead simple: entertain me. Rather than returning ten-blue-lines in response to a 2.4-word query, the desired system should support searchers during their whole task or search episode, by iteratively constructing a complex query or search strategy, by exploring the result-space at every stage, and by combining the partial answers into a coherent whole. The workshop brought together a varied group of researchers covering both user and system centered approaches, who worked together on the problem and potential solutions. There was a strong feeling that we made substantial progress. First, there was general optimism on the wealth of contextual information that can be derived from context or natural interactions without the need for obstrusive explicit feedback. Second, the task of “contextual suggestions”—matching specific types of results against rich profiles—was identified as a manageable first step, and concrete plans for such as track were discussed in the aftermath of the workshop. Third, the identified dimensions of variation—such as the level of engagement, or user versus system initiative—give clear suggestions of the types of input a searcher is willing or able to give and the type of response expected from a system.

  • 18. Belkin, Nicholas J
    et al.
    Clarke, Charles L A
    Kamps, Jaap
    Gao, Ning
    Karlgren, Jussi
    Report on the SIGIR workshop on "entertain me": supporting complex search tasks2011In: SIGIR Forum, ISSN 0163-5840, E-ISSN 1558-0229, Vol. 45, no 2, p. 51-59Article in journal (Refereed)
    Abstract [en]

    Searchers with a complex information need typically slice-and-dice their problem into several queries and subqueries, and laboriously combine the answers post hoc to solve their tasks. Consider planning a social event at the last day of SIGIR, in the unknown city of Beijing, factoring in distances, timing, and preferences on budget, cuisine, and entertainment. A system supporting the entire search episode should "know" a lot, either from profiles or implicit information, or from explicit information in the query or from feedback. This may lead to the (interactive) construction of a complexly structured query, but sometimes the most obvious query for a complex need is dead simple: entertain me. Rather than returning ten-blue-lines in response to a 2.4-word query, the desired system should support searchers during their whole task or search episode, by iteratively constructing a complex query or search strategy, by exploring the result-space at every stage, and by combining the partial answers into a coherent whole.

    The workshop brought together a varied group of researchers covering both user and system centered approaches, who worked together on the problem and potential solutions. There was a strong feeling that we made substantial progress. First, there was general optimism on the wealth of contextual information that can be derived from context or natural interactions without the need for obstrusive explicit feedback. Second, the task of "contextual suggestions"--matching specific types of results against rich profiles--was identified as a manageable first step, and concrete plans for such as track were discussed in the aftermath of the workshop. Third, the identified dimensions of variation--such as the level of engagement, or user versus system initiative--give clear suggestions of the types of input a searcher is willing or able to give and the type of response expected from a system.

  • 19. Bennett, Paul
    et al.
    Gabrilovich, Evgeniy
    Kamps, Jaap
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Report on the Sixth Workshop on Exploiting Semantic Annotations in Information Retrieval (ESAIR '13)2014In: SIGIR Forum, ISSN 0163-5840, E-ISSN 1558-0229, Vol. 48, no 1, p. 13-20Article in journal (Refereed)
    Abstract [en]

    There is an increasing amount of structure on the web as a result of modern web languages, user tagging and annotation, emerging robust NLP tools, and an ever growing volume of linked data. These meaningful, semantic, annotations hold the promise to significantly enhance information access, by enhancing the depth of analysis of today's systems. Currently, we have only started exploring the possibilities and only begin to understand how these valuable semantic cues can be put to fruitful use.

    ESAIR'13 focuses on two of the most challenging aspects to address in the coming years. First, there is a need to include the currently emerging knowledge resources (such as DBpedia, Freebase) as underlying semantic model giving access to an unprecedented scope and detail of factual information. Second, there is a need to include annotations beyond the topical dimension (think of sentiment, reading level, prerequisite level, etc) that contain vital cues for matching the specific needs and profile of the searcher at hand.

    There was a strong feeling that we made substantial progress. Specifically, the discussion contributed to our understanding of the way forward. First, emerging large scale knowledge bases form a crucial component for semantic search, providing a unified framework with zillions of entities and relations. Second, in addition to low level factual annotation, non-topical annotation of larger chunks of text can provide powerful cues on the expertise of the search and (un)suitability of information. Third, novel user interfaces are key to unleash powerful structured querying enabled by semantic annotation|the potential of rich document annotations can only be realized if matched by more articulate queries exploiting these powerful retrieval cues|and a more dynamic approach is emerging by exploiting new forms of query autosuggest.

  • 20. Berendsen, Richard
    et al.
    Di Nunzio, Giorgio Maria
    Gäde, Maria
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Lupu, Mihai
    Rietberger, Stefan
    Stiller, Juliane
    First Report on Alternative Evaluation Methodology PROMISE Deliverable 4.12011Other (Other academic)
    Abstract [en]

    The first report on alternative evaluation methodology summarizes work done within the PROMISE environment and especially within Work package 4 - Evaluation Metrics and Methodologies. The report outlines efforts to develop and support alternative, automated evaluation methodologies, with a special focus on generating ground truth from existing data sources like Log files or annotations. Events like LogCLEF 2011, PatOlympics 2011 or the CHiC2011 workshop are presented and reviewed on their impact on the three main uses case domains.

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  • 21. Berggren, Max
    et al.
    Karlgren, Jussi
    Östling, Robert
    Stockholm University, Faculty of Humanities, Department of Linguistics, Computational Linguistics.
    Parkvall, Mikael
    Stockholm University, Faculty of Humanities, Department of Linguistics, General Linguistics.
    Inferring the location of authors from words in their texts2015In: Proceedings of the 20th Nordic Conference of Computational Linguistics: NODALIDA 2015 / [ed] Beáta Megyesi, Linköping: Linköping University Electronic Press, ACL Anthology , 2015, p. 211-218Conference paper (Refereed)
    Abstract [en]

    For the purposes of computational dialectology or other geographically bound text analysis tasks, texts must be annotated with their or their authors' location. Many texts are locatable but most have no ex- plicit annotation of place. This paper describes a series of experiments to determine how positionally annotated microblog posts can be used to learn location indicating words which then can be used to locate blog texts and their authors. A Gaussian distribution is used to model the locational qualities of words. We introduce the notion of placeness to describe how locational words are.

    We find that modelling word distributions to account for several locations and thus several Gaussian distributions per word, defining a filter which picks out words with high placeness based on their local distributional context, and aggregating locational information in a centroid for each text gives the most useful results. The results are applied to data in the Swedish language.

  • 22.
    Bergren, Max
    et al.
    Gavagai.
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Östling, Robert
    Stockholms universitet.
    Parkvall, Mikael
    Stockholms universitet.
    Inferring the location of authors from words in their texts2015In: Proceedings of the 20th Nordic Conference of Computational Linguistics, Linköping University Electronic Press, 2015Conference paper (Refereed)
    Abstract [en]

    For the purposes of computational dialec- tology or other geographically bound text analysis tasks, texts must be annotated with their or their authors’ location. Many texts are locatable but most have no ex- plicit annotation of place. This paper describes a series of experiments to de- termine how positionally annotated mi- croblog posts can be used to learn loca- tion indicating words which then can be used to locate blog texts and their authors. A Gaussian distribution is used to model the locational qualities of words. We in- troduce the notion of placeness to describe how locational words are.

    We find that modelling word distributions to account for several locations and thus several Gaussian distributions per word, defining a filter which picks out words with high placeness based on their local distributional context, and aggregating lo- cational information in a centroid for each text gives the most useful results. The re- sults are applied to data in the Swedish language. 

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  • 23. Björk, Staffan
    et al.
    Holmquist, Lars Erik
    RISE, Swedish ICT, SICS.
    Redström, Johan
    Bretan, Ivan
    Danielsson, Rolf
    Karlgren, Jussi
    Franzén, Kristofer
    RISE, Swedish ICT, SICS.
    WEST: A Web Browser for Small Terminals1999Conference paper (Refereed)
    Abstract [en]

    We describe WEST, a WEb browser for Small Terminals, that aims to solve some of the problems associated with accessing web pages on hand-held devices. Through a novel combination of text reduction and focus+context visualization, users can access web pages from a very limited display environment, since the system will provide an overview of the contents of a web page even when it is too large to be displayed in its entirety. To make maximum use of the limited resources available on a typical hand-held terminal, much of the most demanding work is done by a proxy server, allowing the terminal to concentrate on the task of providing responsive user interaction. The system makes use of some interaction concepts reminiscent of those defined in the Wireless Application Protocol (WAP), making it possible to utilize the techniques described here for WAP-compliant devices and services that may become available in the near future.

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  • 24. Boman, Magnus
    Abstrakta maskiner och formella språk1996Book (Other academic)
  • 25.
    Boman, Magnus
    et al.
    RISE, Swedish ICT, SICS.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Abstrakta maskiner och formella språk1996 (ed. 1)Book (Refereed)
    Abstract [sv]

    Lärobok i formella språk.

  • 26. Boujemaa, Nozha
    et al.
    Compañó, Ramón
    Dosch, Christoph
    Geurts, Joost
    Kompatsiaris, Yiannis
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    King, Paul
    Köhler, Joachim
    Le Moine, Jean-Yves
    Ortgies, Robert
    Point, Jean-Charles
    Rotenberg, Boris
    Rudström, Åsa
    RISE, Swedish ICT, SICS, Decisions, Networks and Analytics lab.
    Sebe, Nicu
    CHORUS Deliverable 2.1: State of the Art on Multimedia Search Engines2007Other (Other academic)
    Abstract [en]

    Based on the information provided by European projects and national initiatives related to multimedia search as well as domains experts that participated in the CHORUS Think-thanks and workshops, this document reports on the state of the art related to multimedia content search from, a technical, and socio-economic perspective. The technical perspective includes an up to date view on content based indexing and retrieval technologies, multimedia search in the context of mobile devices and peer-to-peer networks, and an overview of current evaluation and benchmark inititiatives to measure the performance of multimedia search engines. From a socio-economic perspective we inventorize the impact and legal consequences of these technical advances and point out future directions of research.

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  • 27.
    Braschler, Martin
    et al.
    Zurich University of Applied Sciences, Switzerland.
    Choukry, Khalid
    Evaluations and Language resources Distribution Agency, France.
    Ferro, Nicola
    University of Padua, Italy.
    Hanbury, Allan
    Information Retrieval Facility, Austria.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Müller, Henning
    University of Applied Sciences Western Switzerland, Switzerland.
    Petras, Vivian
    Humboldt-Universität zu Berlin, Germany.
    Pianta, Emanuele
    Centre for the Evaluation of Language Communication Technologies, Italy.
    de Rijke, Maarten
    University of Amsterdam, The Netherlands.
    Santucci, Giuseppe
    Sapienza University of Rome, Italy.
    A PROMISE for Experimental Evaluation2010Conference paper (Refereed)
    Abstract [en]

    Participative Research labOratory for Multimedia and Multilingual Information Systems Evaluation (PROMISE) is a Network of Excellence, starting in conjunction with this first independent CLEF 2010 conference, and designed to support and develop the evaluation of multilingual and multimedia information access systems, largely through the activities taking place in Cross-Language Evaluation Forum (CLEF) today, and taking it forward in important new ways. PROMISE is coordinated by the University of Padua, and comprises 10 partners: the Swedish Institute for Computer Science, the University of Amsterdam, Sapienza University of Rome, University of Applied Sciences of Western Switzerland, the Information Retrieval Facility, the Zurich University of Applied Sciences, the Humboldt University of Berlin, the Evaluation and Language Resources Distribution Agency, and the Centre for the Evaluation of Language Communication Technologies. The single most important step forward for multilingual and multimedia information access which PROMISE will work towards is to provide an open evaluation infrastructure in order to support automation and collaboration in the evaluation process.

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    fulltext
  • 28.
    Bretan, Ivan
    et al.
    RISE, Swedish ICT, SICS.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Synergy Effects in Natural Language-Based Multimodal Interaction1994Report (Other academic)
    Abstract [en]

    We discuss the synergetic effects that can be obtained in an integrated multimodal interface framework comprising on one hand a visual language-based modality and on the other natural language analysis and generation components. Besides a visual language with high expressive power, the framework includes a cross-modal translation mechanism which enables mutual illumination of interface language syntax and semantics. Special attention has been payed to how to address problems with robustness and pragmatics through unconventional methods which aim to enable user control of the discourse management process.

  • 29.
    Bretan, Ivan
    et al.
    RISE, Swedish ICT, SICS.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Synergy Effects in Natural Language-Based Multimodal Interaction1993In: Proceedings of the Workshop on Multimodal Human-Computer Interaction, 1993, 1Conference paper (Refereed)
    Abstract [en]

    A scheme for integration of a natural language interface into a multimodal environment is presented with emphasis on the synergetic results that can be achieved, which are argued to be: 1)Complementary expressiveness; 2) Mutual illumination of language syntax and semantics; 3) Robust pragmatics and graceful recovery from failed natural language analyses through the reification of discourse objects to enable user control of discourse management.

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  • 30.
    Bylund, Markus
    et al.
    RISE - Research Institutes of Sweden (2017-2019), ICT, SICS.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Olsson, Fredrik
    RISE, Swedish ICT, SICS.
    Sanches, Pedro
    RISE, Swedish ICT, SICS.
    Arvidsson, Carl-Henrik
    Mirroring your Web presence2008Conference paper (Refereed)
    Abstract [en]

    This paper describes the starting points, from the standpoint of individual privacy and identity monitoring and from a technological perspective, of how to design and build tools for to help individual users track and monitor their presence on the web. Our design models and represents facets of identity by tracking their mentions in text. It is intended to provide a basis for discussion on how to redress the information imbalance users are subjected to today, due to lack of overview of their own traces.

  • 31.
    Catarci, Tiziana
    et al.
    Sapienza University of Rome.
    Ferro, Nicola
    University of Padua.
    Forner, Pamela
    CELCT.
    Hiemstra, Djoerd
    University of Twente.
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS. Gavagai.
    Peñas, Anselmo
    UNED.
    Santucci, Guiseppe
    Sapienza University of Rome.
    Womser-Hacker, Christa
    University of Hildesheim.
    CLEF 2012: Information Access Evaluation meetsMultilinguality, Multimodality, and VisualAnalytics2012In: SIGIR Forum, ISSN 0163-5840, E-ISSN 1558-0229, Vol. 46, no 2, p. 29-33Article in journal (Refereed)
  • 32. Catarci, Tiziana
    et al.
    Ferro, Nicola
    Pamela, Forner
    Djoerd, Hiemstra
    Karlgren, Jussi
    Gavagai, Sweden.
    Anselmo, Peñas
    Giuseppe, Santucci
    Womser-Hacker, Christa
    CLEF 2012: Information Access meets Multilinguality, Multimodality, and Visual Analytics2012In: SIGIR Forum, ISSN 0163-5840, E-ISSN 1558-0229, Vol. 46, no 2, p. 29-33Article in journal (Refereed)
    Download full text (pdf)
    fulltext
  • 33. Clough, Paul
    et al.
    Gonzalo, Julio
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Creating Re-Useable Log Files for Interactive CLIR2010Conference paper (Refereed)
    Abstract [en]

    This paper discusses the creation of re-useable log files for investigating interactive cross-language search behaviour. This was run as part of iCLEF 2008-09 where the goal was generating a record of user-system interactions based on interactive cross-language image searches. The level of entry to iCLEF was made purposely low with a default search interface and online game environment provided by the organisers. User-system interaction and input from users was recorded in log files for future investigation. This novel approach to running iCLEF resulted in logs containing more than 2 million lines of data.

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    fulltext
  • 34. Clough, Paul
    et al.
    Gonzalo, Julio
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Barker, Emma
    Artiles, Javier
    Peinado, Victor
    Large-scale interactive evaluation of multilingual information access systems: the iCLEF Flickr challenge2008Conference paper (Refereed)
    Abstract [en]

    Participation in evaluation campaigns for interactive information retrieval systems has received variable success over the years. In this paper we discuss the large-scale interactive evaluation of multilingual information access systems, as part of the Cross-Language Evaluation Forum evaluation campaign. In particular, we describe the evaluation planned for 2008 which is based on interaction with content from Flickr, the popular online photo-sharing service. The proposed evaluation seeks to reduce entry costs, stimulate user evaluation and encourage greater participation in the interactive track of CLEF.

  • 35. Clough, Paul
    et al.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Gonzalo, Julio
    Multilingual interactive experiments with Flickr2006Conference paper (Refereed)
    Abstract [en]

    This paper presents a proposal for iCLEF 2006, the interactive track of the CLEF cross-language evaluation campaign. In the past, iCLEF has addressed applications such as information retrieval and question answering. However, for 2006 the focus has turned to text-based image retrieval from Flickr. We describe Flickr, the challenges this kind of collection presents to cross-language researchers, and suggest initial iCLEF tasks.

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  • 36.
    Cornell, Filip
    et al.
    KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Software and Computer systems, SCS. Gavagai, Stockholm, Sweden.
    Karlgren, Jussi
    Gavagai, Stockholm, Sweden..
    Sachan, Animesh
    Indian Institute of Technology, Kharagpur, Centre of Excellence in Artificial Intelligence, Kharagpur, India.
    Girdzijauskas, Sarunas
    KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Software and Computer systems, SCS. Gavagai, Stockholm, Sweden..
    Symbolic Hyperdimensional Vectors with Sparse Graph Convolutional Neural Networks2022In: 2022 INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS (IJCNN), Institute of Electrical and Electronics Engineers (IEEE) , 2022Conference paper (Refereed)
    Abstract [en]

    In this paper, we propose a novel way of representing graphs for processing in Graph Neural Networks. We reduce the dimensionality of the input data by using Random Indexing, a Vector Symbolic Architectural framework; we implement a new trainable neural layer, also inspired by Vector Symbolic Architectures; we leverage the sparseness of the incoming data in a Sparse Neural Network framework. Our experiments on a number of publicly available datasets and standard benchmarks demonstrate that we can reduce the number of parameters by up to two orders of magnitude. We show how this parsimonious approach not only delivers competitive results but even improves performance for node classification and link prediction. We find that this holds in particular for cases where the graph lacks node features.

  • 37. Demetriou, George
    et al.
    Skadina, Inguna
    Keskustalo, Heikki
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Deksne, Daiga
    Petrelli, Daniela
    Hansen, Preben
    RISE, Swedish ICT, SICS.
    Gaizauskas, Rob
    Sanderson, Mark
    Cross Lingual Document Retrieval, Categorisation and Navigation Based on Distributed Services2004In: Human Language Technology: The Baltic Perspective, 2004, 1, , p. 8Conference paper (Refereed)
  • 38. Dewe, Johan
    et al.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Bretan, Ivan
    Assembling a Balanced Corpus from the Internet1998Conference paper (Refereed)
    Abstract [en]

    For empirically oriented textual research it is crucial to have materials available for extraction of statistics, training probabilistic algorithms, and testing hypotheses about language and language processing in general. <p> In recent years, the awareness that text is not just text, but that texts comes in several forms, has spread from more theoretical and literary subfields of linguistics to the more practically oriented information retrieval and natural language processing fields. As a consequence, several test collections available for research explicitly attempt to cover many or most well-established textual <i>genres</i>, or <i>functional styles</i> in well-balanced proportions (Francis and Kucera, 1982; K&auml;llgren, 1990). <p> The creation of such a collection is a complex matter in several respects. Our reseach area is to build retrieval tools for the Internet, and thus, for our purposes, the choice of genres to include is one of the more central problems: there is no well-established genre palette for Internet materials. To find materials to experiment with, we need to create them in a form suitable for our purposes. This is a double edged problem, involving both vaguely expressed user expectations and establishing categories using large numbers of features which taken singly have low predictive and explanatory power. This paper gives an outline of the methodology we use for determining which genres to include.

  • 39.
    Eriksson, Gunnar
    et al.
    Institute for Language and Folklore, Språkrådet.
    Karlgren, Jussi
    KTH, Teoretisk datalogi, TCS.
    Features for modelling characteristics of conversations: Notebook for PAN at CLEF 20122012In: CLEF 2012 Evaluation Labs and Workshop Online Working Notes, 2012Conference paper (Refereed)
    Abstract [en]

    In this experiment, we find that features which model interaction andconversational behaviour contribute well to identifying sexual grooming behaviourin chat and forum text. Together with the obviously useful lexical features —which we find are more valuable if separated by who generates them — weachieve very successful results in identifying behavioural patterns which maycharacterise sexual grooming. We conjecture that the general framework can beused for other purposes than this specific case if the lexical features are exchangedfor other topical models, the conversational features characterise interaction andbehaviour rather than topical choice.

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    Eriksson Karlgren 2012 Features for modelling characteristics of conversations
  • 40. Eriksson, Gunnar
    et al.
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Features for modelling characteristics of conversations: Notebook for PAN at CLEF 20122012In: CLEF 2012 Evaluation Labs and Workshop Online Working Notes, 2012Conference paper (Refereed)
    Abstract [en]

    In this experiment, we find that features which model interaction andconversational behaviour contribute well to identifying sexual grooming behaviourin chat and forum text. Together with the obviously useful lexical features —which we find are more valuable if separated by who generates them — weachieve very successful results in identifying behavioural patterns which maycharacterise sexual grooming. We conjecture that the general framework can beused for other purposes than this specific case if the lexical features are exchangedfor other topical models, the conversational features characterise interaction andbehaviour rather than topical choice.

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    fulltext
  • 41. Espinoza, Fredrik
    et al.
    Hamfors, Ola
    Karlgren, Jussi
    Olsson, Fredrik
    Persson, Per
    Hamberg, Lars
    Sahlgren, Magnus
    Analysis of Open Answers to Survey Questions throughInteractive Clustering and Theme Extraction2018In: Proceedings of Conference on Human Information Interaction & Retrieval, ACM Digital Library, 2018, p. 317-320Conference paper (Refereed)
    Abstract [en]

    This paper describes design principles for and the implementation of Gavagai Explorer—a new application which builds on interactive text clustering to extract themes from topically coherent text sets such as open text answers to surveys or questionnaires.An automated system is quick, consistent, and has full coverage over the study material. A system allows an analyst to analyze more answers in a given time period; provides the same initial results regardless of who does the analysis, reducing the risks of inter-rater discrepancy; and does not risk miss responses due to fatigue or boredom. These factors reduce the cost and increase the reliability of the service. The most important feature, however, is relieving the human analyst from the frustrating aspects of the coding task, freeing the effort to the central challenge of understanding themes. Gavagai Explorer is available on-line at http://explorer.gavagai.se

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  • 42. Fano, E.
    et al.
    Karlgren, Jussi
    KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Theoretical Computer Science, TCS.
    Nivre, J.
    Uppsala University and Gavagai at CLEF Erisk: Comparing word embedding models2019In: CEUR Workshop Proceedings, CEUR-WS , 2019, Vol. 2380Conference paper (Refereed)
    Abstract [en]

    This paper describes an experiment to evaluate the performance of three different types of semantic vectors or word embeddings-random indexing, GloVe, and ELMo-and two different classification architectures-linear regression and multi-layer perceptrons-for the specific task of identifying authors with eating disorders from writings they publish on a discussion forum. The task requires the classifier to process texts written by the authors in the sequence they were published, and to identify authors likely to be at risk of suffering from eating disorders as early as possible. The data are part of the eRISK evaluation task of CLEF 2019 and evaluated according to the eRISK metrics. Contrary to our expectations, we did not observe a clear-cut advantage using the recently popular contextualized ELMo vectors over the commonly used and much more light-weight GloVe vectors, or the more handily learnable random indexing vectors.

  • 43. Forner, Pamela
    et al.
    Bentivogli, Luisa
    Braschler, Martin
    Choukri, Khalid
    Ferro, Nicola
    Hanbury, Allan
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    Müller, Henning
    PROMISE Technology Transfer Day: Spreading the Word on Information Access Evaluation at an Industrial Event: WORKSHOP REPORT2013In: SIGIR Forum, ISSN 0163-5840, E-ISSN 1558-0229, Vol. 47, no 1, p. 53-58Article in journal (Refereed)
    Abstract [en]

    The Technology Transfer Day was held at CeBIT 2013 from March 5 to March 9, at the Deutsche Messe in Hannover, Germany. PROMISE presented three events at CeBIT: a panel in the CeBIT Global Conference (CGC) - Power Stage, a one-day workshop hosted in the CeBIT Convention Center, and a stand "EU Language & Big Data Projects" in Hall 9. The whole program included 4 panelists, 12 invited talks, and an discussions among the speakers and with the public. This report overviews the aims and contents of the events and outlines the major outcomes. 

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  • 44.
    Franzén, Kristofer
    et al.
    RISE, Swedish ICT, SICS.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Verbosity and Interface Design2000Report (Other academic)
    Abstract [en]

    Users pose very short queries to information retrieval systems. This study shows that the apparent length of the query field has an effect on the length of the query users enter.

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    FULLTEXT01
  • 45. Gey, Frederic
    et al.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS. Userware.
    Kando, Noriko
    Information access in a multilingual world: transitioning from research to real-world applications2009Report (Other academic)
    Abstract [en]

    This report constitutes the proceedings of the workshop on Information Access in a Multilingual World: Transitioning from Research to Real-World Applications}, held at SIGIR 2009 in Boston, July 23, 2009. Multilingual Information Access (MLIA) is at a turning point wherein substantial real-world applications are being introduced after fifteen years of research into cross-language information retrieval, question answering, statistical machine translation and named entity recognition. Previous workshops on this topic have focused on research and small-scale applications. The focus of this workshop was on technology transfer from research to applications and on what future research needs to be done which facilitates MLIA in an increasingly connected multilingual world.

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    FULLTEXT01
  • 46. Gey, Frederic
    et al.
    Karlgren, Jussi
    Swedish Institute of Computer Science, SWEDEN .
    Kando, Noriko
    Information Access in a Multilingual World: Transitioning from Research to Real-World Applications2009In: SIGIR Forum, ISSN 0163-5840, E-ISSN 1558-0229, Vol. 43, no 2, p. 24-28Article in journal (Refereed)
  • 47. Gey, Fredric
    et al.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Kando, Noriko
    Information Access in a Multilingual World: Transitioning from Research to Real-World Applications2009In: SIGIR Forum, Vol. 43, p. 24-28Article in journal (Refereed)
    Abstract [en]

    Multilingual Information Access (MLIA) is at a turning point wherein substantial real-world applications are being introduced after fifteen years of research into cross-language information retrieval, question answering, statistical machine translation and named entity recognition. Previous workshops on this topic have focused on research and small- scale applications. The focus of this workshop was on technology transfer from research to applications and on what future research needs to be done which facilitates MLIA in an increasingly connected multilingual world.

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    fulltext
  • 48. Gonzalo, Julio
    et al.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Clough, Paul
    iCLEF 2006 Overview: Searching the Flickr WWW photo-sharing repository2007Conference paper (Refereed)
    Abstract [en]

    This paper summarizes the task design for iCLEF 2006 (the CLEF interactive track). Compared to previous years, we have proposed a radically new task: searching images in a naturally multilingual database, Flickr, which has millions of photographs shared by people all over the planet, tagged and described in a wide variety of languages. Participants are expected to build a multilingual search front-end to Flickr (using Flickr’s search API) and study the behaviour of the users for a given set of searching tasks. The emphasis is put on studying the process, rather than evaluating its outcome.

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  • 49.
    Görnerup, Olof
    et al.
    RISE, Swedish ICT, SICS, Decisions, Networks and Analytics lab.
    Karlgren, Jussi
    RISE, Swedish ICT, SICS.
    Cross-lingual comparison between distributionally determined word similarity networks2010Conference paper (Refereed)
    Abstract [en]

    As an initial effort to identify universal and language-specific factors that influence the behavior of distributional models, we have formulated a distributionally determined word similarity network model, implemented it for eleven different languages, and compared the resulting networks. In the model, vertices constitute words and two words are linked if they occur in similar contexts. The model is found to capture clear isomorphisms across languages in terms of syntactic and semantic classes, as well as functional categories of abstract discourse markers. Language specific morphology is found to be a dominating factor for the accuracy of the model.

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  • 50. Hansen, Preben
    et al.
    Järvelin, Anni
    Eriksson, Gunnar
    Karlgren, Jussi
    KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
    A Use Case Framework for Information Access Evaluation2014In: Professional Search in the Modern World: COST Action IC1002 on Multilingual and Multifaceted Interactive Information Access / [ed] Paltoglou, Georgios, Loizides, Fernando, Hansen, Preben, Springer, 2014, p. 6-22Chapter in book (Refereed)
    Abstract [en]

    Information access is no longer only a question of retrieving topical text documents in a work-task related context. Information search has become one of the most common uses of the personal computers; a daily task for millions of individual users searching for information motivated by information needs they experience for some reason, momentarily or continuously. Instead of professionally edited text documents, multilingual and multimedia content from a variety of sources of varying quality needs to be accessed. Even the scope of the research efforts in the field must therefore be broadened to better capture the mechanisms for the systems’ impact, take-up and success in the marketplace. Much work has been carried out in this direction: graded relevance, and new evaluation metrics, more varied document collections used in evaluation and different search tasks evaluated. The research in the field is however fragmented. Despite that the need for a common evaluation framework is widely acknowledged, such framework is still not in place. IR system evaluation results are not regularly validated in Interactive IR or field studies; the infrastructure for generalizing Interactive IR results over tasks, users and collections is still missing. This chapter presents a use case-based framework for experimental design in the field of interactive information access. Use cases in general connect system design and evaluation to interaction and user goals, and help identifying test cases for different user groups of a system. We suggest that use cases can provide a useful link even between information access system usage and evaluation mechanisms and thus bring together research from the different related research fields. In this chapter we discuss how use cases can guide the developments of rich models of users, domains, environments, and interaction, and make explicit how the models are connected to benchmarking mechanisms. We give examples of the central features of the different models. The framework is highlighted by examples that sketch out how the framework can be productively used in experimental design and reporting with a minimal threshold for adoption.

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