Context-based Global Expertise in Recommendation Systems
Vincenza Carchiolo, Alessandro Longheu, Michele Malgeri, Giuseppe Mangioni · 2010
Expertise assessment is frequently required in social networks. This work proposes a method to globally rank people according to their expertise according to a set of topics We also introduce contexts similarity to allow related contexts to be exploited in expertise assessment. These ideas are applied to the Epinions.com recommender systems, showing that expertise in recommendation matters. Povzetek: Opisana je metoda za rangiranje posameznikov glede na socialno omrežje. 1 Introduction and related work The concept of expertise can be simply defined as the skill or knowledge that a person has in a particular field; more formally, expertise is "the ability to discriminate meaningful classes of domain features and patterns, and to take