(Partial) User Preference Similarity as Classification-Based Model Similarity
Amancio Bouza and Abraham Bernstein

Type: Paper

title = {(Partial) User Preference Similarity as Classification-Based Model Similarity},
journal = {Semantic Web – Interoperability, Usability, Applicability},
author = {Amancio Bouza and Abraham Bernstein},
year = {2012},
url = {http://www.semantic-web-journal.net/content/partial-user-preference-similarity-classification-based-model-similarity},
license = {},
abstract = {Recommender systems play an important role in helping people finding items they like. One type of recommender system is collaborative filtering that considers feedback of like-minded people. The fundamental assumption of collaborative filtering is that people who previously shared similar preferences behave similarly later on. This paper introduces several novel, classification-based similarity metrics that are used to compare user preferences. Furthermore, the concept of partial preference similarity based on a machine learning model is presented. For evaluation the cold-start behavior of the presented classification-based similarity metrics is evaluated in a large-scale experiment. It is shown that classification-based similarity metrics with machine learning significantly outperforms other similarity approaches in different cold-start situations under different degrees of data-sparseness.}