A statistical recommendation model of mobile services based on contextual evidences

Authors:
Artzai Picón;Sergio Rodríguez-Vaamonde;Javier Jaén;Jose Antonio Mocholi;David García;Alejandro Cadenas
Affiliations:
Infotech Unit, Tecnalia Research and Innovation, Zamudio, Spain;Infotech Unit, Tecnalia Research and Innovation, Zamudio, Spain;ISSI - Departamento de Sistemas Informáticos y Computación, Universidad Politécnica de Valencia, Valencia, Spain;ISSI - Departamento de Sistemas Informáticos y Computación, Universidad Politécnica de Valencia, Valencia, Spain;Telefónica I+D, Madrid, Spain;Telefónica I+D, Madrid, Spain
Venue:
Expert Systems with Applications: An International Journal
Year:
2012

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Abstract

Mobile devices are undergoing great advances in recent years allowing users to access an increasing number of services or personalized applications that can help them select the best restaurant, locate certain shops, choose the best way home or rent the best film. However this great quantity of services does not require the user to find and select those services needed for each specific situation. The classical approaches link some preferences to certain services, include the recommendations given by other users or even include certain fixed rules in order to choose the most appropriate services. However, since these methods assume that user needs can be modelled by fixed rules or preferences, they fail when modelling different users or makes them difficult to train. In this paper we propose a new algorithm that learns from the user's actions in different contextual situations, which allows to properly infer the most appropriate recommendations for a user in a specific contextual situation. This model, by using of a double knowledge diffusion approach, has been specifically designed to face the inherent lack of learning evidences, computational cost and continuous training requirements and, therefore, overcomes the performance and convergence rates offered by other learning methodologies.