Exploiting Hierarchy for Ranking-based Recommendation

Autor:	Kouneli, Marianna
Rok vydání:	2015
Předmět:	Computer Science - Information Retrieval Computer Science - Social and Information Networks
Druh dokumentu:	Working Paper
Popis:	The purpose of this master's thesis is to study and develop a new algorithmic framework for collaborative filtering (CF) to generate recommendations. The method we propose is based on the exploitation of the hierarchical structure of the item space and intuitively "stands" on the property of Near Complete Decomposability (NCD) which is inherent in the structure of the majority of hierarchical systems. Building on the intuition behind the NCDawareRank algorithm and its related concept of NCD proximity, we model our system in a way that illuminates its endemic characteristics and we propose a new algorithmic framework for recommendations, called HIR. We focus on combining the direct with the NCD "neighborhoods" of items to achieve better characterization of the inter-item relations, in order to improve the quality of recommendations and alleviate sparsity related problems. Comment: 81 pages, M.Sc. Thesis (in Greek), Department of Computer Engineering and Informatics, University of Patras
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1512.07444 Zobrazit plný text záznamu View this record from Arxiv