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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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Journal ArticleDOI

Recommender systems survey

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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TRY - a global database of plant traits

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References
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Accurate is not always good: How Accuracy Metrics have hurt Recommender Systems

TL;DR: This paper proposes informal arguments that the recommender community should move beyond the conventional accuracy metrics and their associated experimental methodologies, and proposes new user-centric directions for evaluating recommender systems.
Journal ArticleDOI

Probabilistic relevance ranking for collaborative filtering

TL;DR: It is argued that collaborative filtering can be directly cast as a relevance ranking problem, and the basic formula is extended by proposing the Bayesian inference to estimate the probability of relevance (and non-relevance), which largely alleviates the data sparsity problem.
Proceedings ArticleDOI

Imputation-boosted collaborative filtering using machine learning classifiers

TL;DR: A framework of imputation-boosted collaborative filtering (IBCF), which first uses an imputation technique, or perhaps machine learned classifier, to fill-in the sparse user-item rating matrix, then runs a traditional Pearson correlation-based CF algorithm on this matrix to predict a novel rating.
Dissertation

Merchant differentiation through integrative negotiation in agent-mediated electronic commerce

TL;DR: Maes et al. as discussed by the authors proposed Tete-a-Tete, an agent-mediated comparison shopping system that allows consumers to consider dimensions other than price in their buying decisions for complex products.
Proceedings ArticleDOI

Hybrid Collaborative Filtering Algorithms Using a Mixture of Experts

TL;DR: This paper proposes two hybrid CF algorithms, sequential mixture CF and joint mixture CF, each combining advice from multiple experts for effective recommendation, and shows that these algorithms outperform their peers, especially when the underlying data are very sparse.
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