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WWW
2008
ACM
14 years 10 months ago
2008
ACM
It is crucial for a web crawler to distinguish between ephemeral and persistent content. Ephemeral content (e.g., quote of the day) is usually not worth crawling, because by the t...
WWW
2008
ACM
14 years 10 months ago
2008
ACM
Social media such as Web forum often have dense interactions between user and content where network models are often appropriate for analysis. Joint non-negative matrix factorizat...
WWW
2008
ACM
14 years 10 months ago
2008
ACM
This paper studies the problem of unified ranked retrieval of heterogeneous XML documents and Web data. We propose an effective search engine called Sailer to adaptively and versa...
WWW
2008
ACM
14 years 10 months ago
2008
ACM
The research objective of this work is to develop a general framework that incorporates collaborative social tagging with a novel ontology scheme conveying multiple perspectives. ...
WWW
2007
ACM
14 years 10 months ago
2007
ACM
We address the problem of measuring global quality metrics of search engines, like corpus size, index freshness, and density of duplicates in the corpus. The recently proposed est...