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CIKM
2003
Springer
14 years 3 months ago
Time-based language models
We explore the relationship between time and relevance using TREC ad-hoc queries. A type of query is identified that favors very recent documents. We propose a time-based language...
Xiaoyan Li, W. Bruce Croft
CIVR
2003
Springer
154views Image Analysis» more  CIVR 2003»
14 years 3 months ago
Detecting Semantic Concepts from Video Using Temporal Gradients and Audio Classification
In this paper we describe new methods to detect semantic concepts from digital video based on audible and visual content. Temporal Gradient Correlogram captures temporal correlatio...
Mika Rautiainen, Tapio Seppänen, Jani Penttil...
EACL
2003
ACL Anthology
13 years 11 months ago
QUALIFIER: Question Answering by Lexical Fabric and External Resources
One of the major challenges in TRECstyle question-answering (QA) is to overcome the mismatch in the lexical representations in the query space and document space. This is particul...
Hui Yang, Tat-Seng Chua
WWW
2004
ACM
14 years 10 months ago
Unsupervised learning of soft patterns for generating definitions from online news
Breaking news often contains timely definitions and descriptions of current terms, organizations and personalities. We utilize such web sources to construct definitions for such t...
Hang Cui, Min-Yen Kan, Tat-Seng Chua
APWEB
2005
Springer
14 years 3 months ago
Level-Based Link Analysis
In order to get high-quality web pages, search engines often resort retrieval pages by their ranks. The rank is a kind of measurement of importance of pages. Famous ranking algorit...
Guang Feng, Tie-Yan Liu, Xu-Dong Zhang, Tao Qin, B...