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WWW
2008
ACM
16 years 5 months ago
User behavior oriented web spam detection
Combating Web spam has become one of the top challenges for Web search engines. State-of-the-art spam detection techniques are usually designed for specific known types of Web spa...
Yiqun Liu, Min Zhang, Shaoping Ma, Liyun Ru
WWW
2007
ACM
16 years 5 months ago
Hierarchical, perceptron-like learning for ontology-based information extraction
Recent work on ontology-based Information Extraction (IE) has tried to make use of knowledge from the target ontology in order to improve semantic annotation results. However, ver...
Yaoyong Li, Kalina Bontcheva
WWW
2007
ACM
16 years 5 months ago
Search engines and their public interfaces: which apis are the most synchronized?
Researchers of commercial search engines often collect data using the application programming interface (API) or by "scraping" results from the web user interface (WUI),...
Frank McCown, Michael L. Nelson
WWW
2007
ACM
16 years 5 months ago
Using d-gap patterns for index compression
Sequential patterns of d-gaps exist pervasively in inverted lists of Web document collection indices due to the cluster property. In this paper the information of d-gap sequential...
Jinlin Chen, Terry Cook
WWW
2007
ACM
16 years 5 months ago
Image annotation by hierarchical mapping of features
In this paper, we propose a novel approach of image annotation by constructing a hierarchical mapping between lowlevel visual features and text features utilizing the relations wi...
Qiankun Zhao, Prasenjit Mitra, C. Lee Giles