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A survey of collaborative filtering techniques

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TLDR
From basic techniques to the state-of-the-art, this paper attempts to present a comprehensive survey for CF techniques, which can be served as a roadmap for research and practice in this area.
Abstract
As one of the most successful approaches to building recommender systems, collaborative filtering (CF) uses the known preferences of a group of users to make recommendations or predictions of the unknown preferences for other users. In this paper, we first introduce CF tasks and their main challenges, such as data sparsity, scalability, synonymy, gray sheep, shilling attacks, privacy protection, etc., and their possible solutions. We then present three main categories of CF techniques: memory-based, modelbased, and hybrid CF algorithms (that combine CF with other recommendation techniques), with examples for representative algorithms of each category, and analysis of their predictive performance and their ability to address the challenges. From basic techniques to the state-of-the-art, we attempt to present a comprehensive survey for CF techniques, which can be served as a roadmap for research and practice in this area.

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TL;DR: An overview of recommender systems as well as collaborative filtering methods and algorithms is provided, which explains their evolution, provides an original classification for these systems, identifies areas of future implementation and develops certain areas selected for past, present or future importance.
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References
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Journal ArticleDOI

Collaborative Filtering Using a Regression-Based Approach

TL;DR: Strong experimental evidence was obtained that the proposed regression-based approach can be applied to data over a large range of sparsity scenarios and is superior to non-personalised predictors even when ratings data are very sparse.
Journal ArticleDOI

Unified relevance models for rating prediction in collaborative filtering

TL;DR: A probabilistic user-to-item relevance framework is presented that introduces the concept of relevance into the related problem of collaborative filtering, and is more robust to data sparsity because the different types of ratings are used in concert.
Journal ArticleDOI

Exploring Versus Exploiting when Learning User Models for Text Recommendation

TL;DR: The results show that simple preference functions can successfully be learned using a vector-space representation of a user model in conjunction with a gradient descent algorithm, but that increasingly complex preference functions lead to a slowing down of the learning process.
Proceedings Article

VDCBPI: an Approximate Scalable Algorithm for Large POMDPs

TL;DR: A new algorithm (VDCBPI) that mitigates both sources of intractability by combining the Value Directed Compression (VDC) technique with Bounded Policy Iteration (BPI) is described.
Journal ArticleDOI

Scale and Translation Invariant Collaborative Filtering Systems

TL;DR: Using the EachMovie and the Jester data sets, it is shown that learning-free constant time scale and translation invariant schemes outperforms other learning- free constant time schemes by at least 3% and perform as well as expensive memory-based schemes (within 4%).
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