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The long tail of recommender systems and how to leverage it

Published: 23 October 2008 Publication History

Abstract

The paper studies the Long Tail problem of recommender systems when many items in the Long Tail have only few ratings, thus making it hard to use them in recommender systems. The approach presented in the paper splits the whole itemset into the head and the tail parts and clusters only the tail items. Then recommendations for the tail items are based on the ratings in these clusters and for the head items on the ratings of individual items. If such partition and clustering are done properly, we show that this reduces the recommendation error rates for the tail items, while maintaining reasonable computational performance.

References

[1]
Schein, A., Popescul, A., Ungar, L. and Pennock, D. 2002. Methods and Metrics for Cold-Start Recommendations. Proc. of the 25th ACM SIGIR Conference.
[2]
Anderson, C. 2006. The Long Tail. Hyperion press.
[3]
Fleder, D. M., and Hosanagar, K. 2008. Blockbuster Cultures Next Rise or Fall: The Impact of Recommender Systems on Sales Diversity. NET Institute Working Paper No. #07-10.
[4]
Hervas-Drane, A. 2007. Word of Mouth and Recommender Systems: A Theory of the Long Tail. NET Institute Working Paper No.07-41, November 2007.
[5]
http://movielens.umn.edu.
[6]
http://www.bookcrossing.com.
[7]
Witten, I. H., and Frank, E. 2005. Data Mining: Practical machine learning tools and techniques with Java implementations. Morgan Kaufmann.
[8]
Truong, K. Q., Ishikawa, F., Honiden, S. 2007. Improving Accuracy of Recommender System by Item Clustering, IEICE TRANSACTIONS on Information and Systems, E90-D-I(9).
[9]
Ungar, L. H. and Foster, D. P. 1998. Clustering Methods for Collaborative Filtering. Proceedings of the Workshop on Recommendation Systems. AAAI Press.

Cited By

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  • (2024)Recommender Systems Applications: Data Sources, Features, and ChallengesInformation10.3390/info1510066015:10(660)Online publication date: 21-Oct-2024
  • (2024)Assessing the Impact of Recommendation Novelty on Older Consumers: Older Does Not Always Mean the Avoidance of Innovative ProductsBehavioral Sciences10.3390/bs1406047314:6(473)Online publication date: 5-Jun-2024
  • (2024)A Dynamical System Framework for Exploring Consumer Trajectories in Recommender SystemSSRN Electronic Journal10.2139/ssrn.4847168Online publication date: 2024
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cover image ACM Conferences
RecSys '08: Proceedings of the 2008 ACM conference on Recommender systems
October 2008
348 pages
ISBN:9781605580937
DOI:10.1145/1454008
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 23 October 2008

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Author Tags

  1. clustering
  2. data mining
  3. long tail
  4. recommendation

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RecSys08: ACM Conference on Recommender Systems
October 23 - 25, 2008
Lausanne, Switzerland

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Overall Acceptance Rate 254 of 1,295 submissions, 20%

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Cited By

View all
  • (2024)Recommender Systems Applications: Data Sources, Features, and ChallengesInformation10.3390/info1510066015:10(660)Online publication date: 21-Oct-2024
  • (2024)Assessing the Impact of Recommendation Novelty on Older Consumers: Older Does Not Always Mean the Avoidance of Innovative ProductsBehavioral Sciences10.3390/bs1406047314:6(473)Online publication date: 5-Jun-2024
  • (2024)A Dynamical System Framework for Exploring Consumer Trajectories in Recommender SystemSSRN Electronic Journal10.2139/ssrn.4847168Online publication date: 2024
  • (2024)The Fault in Our Recommendations: On the Perils of Optimizing the MeasurableProceedings of the 18th ACM Conference on Recommender Systems10.1145/3640457.3688144(200-208)Online publication date: 8-Oct-2024
  • (2024)Putting Popularity Bias Mitigation to the Test: A User-Centric Evaluation in Music RecommendersProceedings of the 18th ACM Conference on Recommender Systems10.1145/3640457.3688102(169-178)Online publication date: 8-Oct-2024
  • (2024)Warming Up Cold-Start CTR Prediction by Learning Item-Specific Feature InteractionsProceedings of the 30th ACM SIGKDD Conference on Knowledge Discovery and Data Mining10.1145/3637528.3671784(3233-3244)Online publication date: 25-Aug-2024
  • (2024)Interaction-level Membership Inference Attack against Recommender Systems with Long-tailed DistributionProceedings of the 33rd ACM International Conference on Information and Knowledge Management10.1145/3627673.3679804(3433-3442)Online publication date: 21-Oct-2024
  • (2024)RecJPQ: Training Large-Catalogue Sequential RecommendersProceedings of the 17th ACM International Conference on Web Search and Data Mining10.1145/3616855.3635821(538-547)Online publication date: 4-Mar-2024
  • (2024)Cluster Anchor Regularization to Alleviate Popularity Bias in Recommender SystemsCompanion Proceedings of the ACM Web Conference 202410.1145/3589335.3648312(151-160)Online publication date: 13-May-2024
  • (2024)Diversifying Collaborative Filtering via Graph Spreading Network and Selective SamplingIEEE Transactions on Neural Networks and Learning Systems10.1109/TNNLS.2023.327247535:10(13860-13873)Online publication date: Oct-2024
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