NDLI: How the distribution of the number of items rated per user influences the quality of recommendations

Content Provider	IEEE Xplore Digital Library
Author	Grottke, M. Knoll, J. Gross, R.
Copyright Year	2015
Description	Author affiliation: Georg Simon Ohm, Tech. Hochschule Nurnberg, Nuremberg, Germany (Knoll, J.; Gross, R.) \|\| Friedrich-Alexander-Univ. Erlangen-Nurnberg, Nuremberg, Germany (Grottke, M.)
Abstract	With an ever-increasing amount of information made available via the Internet, it is getting more and more difficult to find the relevant pieces of information. Recommender systems have thus become an essential part of information technology. Although a lot of research has been devoted to this area, the factors influencing the quality of recommendations are not completely understood. This paper examines how the quality of the recommendations made by collaborative filtering recommender systems depends on the distribution of the number of items rated per user. Specifically, we show that its skewness plays an important role for the quality attained by an item-based collaborative filtering algorithm.
Starting Page	1
Ending Page	8
File Size	587006
Page Count	8
File Format	PDF
ISBN	9781467373272
e-ISBN	9781467373289
DOI	10.1109/I4CS.2015.7294478
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Measurement Accuracy Simulation study Collaborative filtering Item-based recommender system Classification accuracy Training data Skewness Motion pictures Prediction algorithms Data models Recommender systems
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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