Change search
ReferencesLink to record
Permanent link

Direct link
Collaborative Filtering on
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Computing Science.
2011 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The purpose of this project was theimprovement of navigation on the forumsite The forum containsover two million threads, and sitemanagement wanted a system to recommendthreads to users, alleviating the problemswith navigating all the data. The choicefell on a thread-to-thread similaritybased system, recommending threads similarto the one currently read. Two differentsimilarity measures were tried out, withthe first (cosine similarity) beingabandoned due to performance issues,replaced with a binary vector similaritysolution. The data still needed to bereduced to get execution times down toacceptable levels, and sampling andpartitioning were used. A live testshowed, after a week and about ten millionpage views, that the system provided abenefit a bit above 10% over a controlcondition in terms of number of clicks.

Place, publisher, year, edition, pages
2011. , 46 p.
UPTEC STS, ISSN 1650-8319 ; 11 013
National Category
Computer Science
URN: urn:nbn:se:uu:diva-166825OAI: diva2:478077
External cooperation
Familjeliv Media
Subject / course
Computer Systems Sciences
Educational program
Systems in Technology and Society Programme
Available from: 2012-02-02 Created: 2012-01-15 Last updated: 2012-02-02Bibliographically approved

Open Access in DiVA

fulltext(1114 kB)862 downloads
File information
File name FULLTEXT01.pdfFile size 1114 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Division of Computing Science
Computer Science

Search outside of DiVA

GoogleGoogle Scholar
Total: 862 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

Total: 331 hits
ReferencesLink to record
Permanent link

Direct link