Abstract—Search log data is multi dimensional data consisting of number of searches of multiple users with many searched parameters. This data can be used to identify a user’s interest in an item or object being searched. Identifying highest interests of a Web user from his search log data is a complex process. Based on a user’s previous searches, most recommendation methods employ two-dimensional models to find relevant items. Such items are then recommended to a user. Two-dimensional data models, when used to mine knowledge from such multi dimensional data may not be able to give good mappings of user and his searches. The major problem with such models is that they are unable to find the latent relationships that exist between different searched dimensions. In this research work, we utilize tensors to model the various searches made by a user. Such high dimensional data model is then used to extract the relationship between various dimensions, and find the prominent searched components. To achieve this, we have used popular tensor decomposition methods like PARAFAC, Tucker and HOSVD. All experiments and evaluation is done on real datasets, which clearly show the effectiveness of tensor models in finding prominent searched components in comparison to other widely used two-dimensional data models. Such top rated searched components are then given as recommendation to users.
Index Terms—Decomposition, Recommendation, Tensor,Web Log Data.
Rakesh Rawat is with Faculty of Science and Technology, Queensland University of Technology, Brisbane, Australia. (Corresponding Author.Phone: +61-07-31389339, e-mail: firstname.lastname@example.org).
Richi Nayak is with Faculty of Science and Technology, Queensland University of Technology, Brisbane, Australia. (e-mail:email@example.com).
Yuefeng Li is with Faculty of Science and Technology, Queensland University of Technology, Brisbane, Australia. (e-mail: firstname.lastname@example.org).
Cite: Rakesh Rawat, Richi Nayak, Yuefeng Li, " Identifying Interests of Web Users for Effective Recommendations," International Journal of Innovation, Management and Technology vol. 2, no. 1, pp. 19-24, 2011.