24105 search results - page 175 / 4821 » Models in Information Retrieval |
SIGIR
2006
ACM
14 years 4 months ago
2006
ACM
User modeling for information retrieval has mostly been studied to improve the effectiveness of information access in centralized repositories. In this paper we explore user model...
IRI
2008
IEEE
14 years 5 months ago
2008
IEEE
Question Answering Systems (QAS) are receiving increasing attention from information systems researchers, particularly those in the information retrieval and natural language proc...
CIKM
2010
Springer
13 years 8 months ago
2010
Springer
We present a flexible new optimization framework for finding effective, reliable pseudo-relevance feedback models that unifies existing complementary approaches in a principled wa...
SIGIR
2009
ACM
14 years 5 months ago
2009
ACM
Pseudo-relevance feedback (PRF) via query-expansion has been proven to be effective in many information retrieval (IR) tasks. In most existing work, the top-ranked documents from...
WSDM
2012
ACM
12 years 6 months ago
2012
ACM
In this work we propose a novel approach to anomaly detection in streaming communication data. We first build a stochastic model for the system based on temporal communication pa...