Leveraging User Diversity to Harvest Knowledge on the Social Web

Details Leveraging User Diversity to Harvest Knowledge on the Social Web Leveraging User Diversity to Harvest Knowledge on the Social Web

2011-10-21

arxiv.org/abs/1110.4851v1

Computer Science

Information Retrieval

The Third IEEE International Conference on Social Computing (SocialCom2011)

Scientific paper

Social web users are a very diverse group with varying interests, levels of expertise, enthusiasm, and expressiveness. As a result, the quality of content and annotations they create to organize content is also highly variable. While several approaches have been proposed to mine social annotations, for example, to learn folksonomies that reflect how people relate narrower concepts to broader ones, these methods treat all users and the annotations they create uniformly. We propose a framework to automatically identify experts, i.e., knowledgeable users who create high quality annotations, and use their knowledge to guide folksonomy learning. We evaluate the approach on a large body of social annotations extracted from the photosharing site Flickr. We show that using expert knowledge leads to more detailed and accurate folksonomies. Moreover, we show that including annotations from non-expert, or novice, users leads to more comprehensive folksonomies than experts' knowledge alone.

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