1. Topographic organization of user preference patterns in collaborative filtering
- Creator:
- Tiňo, Peter and Polčicová, Gabriela
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- collaborative filtering, expectation-maximization algorithm, self-organizing maps, and topographic ordering
- Language:
- English
- Description:
- We introduce topographic versions of two latent class models for collaborative filtering. Topographic organization of latent classes makes orientation in rating/preference patterns captured by the latent classes easier and more systematic. Furthermore, since we deal with probabilistic models of the data, we can readily use tools from probability and information theories to interpret and visualize information extracted by the model. We apply our models to a large collection of user ratings for films.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public