Recomendación de productos a partir de perfiles de usuario interpretables

Tecnura. 2015;19(45):89-100 DOI 10.14483/udistrital.jour.tecnura.2015.3.a07

 

Journal Homepage

Journal Title: Tecnura

ISSN: 0123-921X (Print); 2248-7638 (Online)

Publisher: Universidad Distrital Francisco Jose de Caldas

LCC Subject Category: Technology: Engineering (General). Civil engineering (General)

Country of publisher: Colombia

Language of fulltext: Spanish; Castilian

Full-text formats available: PDF, HTML

 

AUTHORS

Claudia Jeanneth Becerra Cortes (Universidad Nacional de Colombia)
Sergio Gonzalo Jiménez Vargas (Universidad Nacional de Colombia)
Fabio Augusto González Osorio (Universidad Nacional de Colombia)
Alexander Gelbukh (Instituto Politécnico Nacional de México)

EDITORIAL INFORMATION

Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 40 weeks

 

Abstract | Full Text

Recommender systems allow users to have a personalized view of large sets of products, relieving the overload problem of choice in e-commerce sites. Usually, recommendations are obtained using the technique called "collaborative filtering". This technique filters the products the users wish, from those they don´t want, inferring affinities between products and users in a space of abstract features, also called a latent space. These techniques have proven to be of great predictive value, but these created profiles are neither understandable, nor editable for users, enclosing users in a bubble, in which they only receive collaborative recommendations conditioned by their historical behaviors. In our work we propose a method to build user profiles, defined in interpretable spaces, or defined in terms of collaborative tags or keywords (i.e. words extracted from the descriptions of the product), which can be interpreted and modified by users. The model proposed generate linear profiles, whose coefficients, positives or negatives, reflect the user's affinity towards tags or keywords, according to the space selected. To test our hypothesis, we used the dataset of research in movie recommender systems from the University of Minnesota: Movielens. The results show that the predictive ability of the model, based on interpretable user profiles, is comparable to those models based on abstract profiles with the added benefit that these profiles are interpretable.