Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Combining Word Semantics within Complex Hilbert Space for Information Retrieval
University of Borås, Swedish School of Library and Information Science.
University of Borås, Swedish School of Library and Information Science.
2013 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Complex numbers are a fundamental aspect of the mathematical formalism of quantum physics. Quantum-like models developed outside physics often overlooked the role of complex numbers. Specifically, previous models in Information Retrieval (IR) ignored complex numbers. We argue that to advance the use of quantum models of IR, one has to lift the constraint of real-valued representations of the information space, and package more information within the representation by means of complex numbers. As a first attempt, we propose a complex-valued representation for IR, which explicitly uses complex valued Hilbert spaces, and thus where terms, documents and queries are represented as complex-valued vectors. The proposal consists of integrating distributional semantics evidence within the real component of a term vector; whereas, ontological information is encoded in the imaginary component. Our proposal has the merit of lifting the role of complex numbers from a computational byproduct of the model to the very mathematical texture that unifies different levels of semantic information. An empirical instantiation of our proposal is tested in the TREC Medical Record task of retrieving cohorts for clinical studies.

Place, publisher, year, edition, pages
Springer , 2013.
Keyword [en]
complex space, information retrieval, quantum probability theory
National Category
Computer and Information Science
Research subject
Library and Information Science
Identifiers
URN: urn:nbn:se:hb:diva-7001Local ID: 2320/12521OAI: oai:DiVA.org:hb-7001DiVA: diva2:887708
Conference
7th International Quantum Interaction Conference, Leicester, United Kingdom
Available from: 2015-12-22 Created: 2015-12-22

Open Access in DiVA

fulltext(212 kB)164 downloads
File information
File name FULLTEXT01.pdfFile size 212 kBChecksum SHA-512
36d4e1e1f83fd0fbb4c6940be12cdd861c81ee6e6a35dea52af036a33deeff3ceffcb37257e360eb6eddccd92bc04419c3450717b98b1bd47c14b79609472edc
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Wittek, PeterDarányi, Sándor
By organisation
Swedish School of Library and Information Science
Computer and Information Science

Search outside of DiVA

GoogleGoogle Scholar
Total: 164 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 654 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf