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ACM Transactions on Information Systems (TOIS), Volume 29 Issue 3, July 2011

Content redundancy in YouTube and its application to video tagging
Jose San Pedro, Stefan Siersdorfer, Mark Sanderson
Article No.: 13
DOI: 10.1145/1993036.1993037

The emergence of large-scale social Web communities has enabled users to share online vast amounts of multimedia content. An analysis of YouTube reveals a high amount of redundancy, in the form of videos with overlapping or duplicated content. We...

Exploring the music similarity space on the web
Markus Schedl, Tim Pohle, Peter Knees, Gerhard Widmer
Article No.: 14
DOI: 10.1145/1993036.1993038

This article comprehensively addresses the problem of similarity measurement between music artists via text-based features extracted from Web pages. To this end, we present a thorough evaluation of different term-weighting strategies,...

Toward a semantic granularity model for domain-specific information retrieval
Xin Yan, Raymond Y.K. Lau, Dawei Song, Xue Li, Jian Ma
Article No.: 15
DOI: 10.1145/1993036.1993039

Both similarity-based and popularity-based document ranking functions have been successfully applied to information retrieval (IR) in general. However, the dimension of semantic granularity also should be considered for effective retrieval. In...

Fast construction of the HYB index
Hannah Bast, Marjan Celikik
Article No.: 16
DOI: 10.1145/1993036.1993040

As shown in a series of recent works, the HYB index is an alternative to the inverted index (INV) that enables very fast prefix searches, which in turn is the basis for fast processing of many other types of advanced queries, including...