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» The Effectiveness of Concept Based Search for Video Retrieva...
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MM
2009
ACM
245views Multimedia» more  MM 2009»
14 years 2 months ago
Concept detectors: how good is good enough?
Today, semantic concept based video retrieval systems often show insufficient performance for real-life applications. Clearly, a big share of the reason is the lacking performance...
Robin Aly, Djoerd Hiemstra
CIKM
2009
Springer
14 years 2 months ago
The effect of negation on sentiment analysis and retrieval effectiveness
We investigate the problem of determining the polarity of sentiments when one or more occurrences of a negation term such as “not” appear in a sentence. The concept of the sco...
Lifeng Jia, Clement T. Yu, Weiyi Meng
KDD
2002
ACM
286views Data Mining» more  KDD 2002»
14 years 8 months ago
Object Boundary Detection For Ontology-Based Image Classification
Technology in the field of digital media generates huge amounts of non-textual information, audio, video, and images, along with more familiar textual information. The potential f...
Lei Wang, Latifur Khan, Casey Breen
LREC
2010
170views Education» more  LREC 2010»
13 years 9 months ago
Building a Domain-specific Document Collection for Evaluating Metadata Effects on Information Retrieval
This paper describes the development of a structured document collection containing user-generated text and numerical metadata for exploring the exploitation of metadata in inform...
Walid Magdy, Jinming Min, Johannes Leveling, Garet...
WSDM
2010
ACM
160views Data Mining» more  WSDM 2010»
14 years 4 months ago
Learning Concept Importance Using a Weighted Dependence Model
Modeling query concepts through term dependencies has been shown to have a significant positive effect on retrieval performance, especially for tasks such as web search, where rel...
Michael Bendersky, Donald Metzler, W. Bruce Croft