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» A risk minimization framework for information retrieval
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EDBTW
2010
Springer
14 years 2 months ago
Expressing privacy metrics as one-symbol information
Organizations often need to release microdata without revealing sensitive information. To this scope, data are anonymized and, to assess the quality of the process, various privac...
Michele Bezzi
JCDL
2009
ACM
115views Education» more  JCDL 2009»
14 years 2 months ago
Using timed-release cryptography to mitigate the preservation risk of embargo periods
Due to temporary access restrictions, embargoed data cannot be refreshed to unlimited parties during the embargo time interval. A solution to mitigate the risk of data loss has be...
Rabia Haq, Michael L. Nelson
CIKM
2009
Springer
14 years 2 months ago
Reducing the risk of query expansion via robust constrained optimization
We introduce a new theoretical derivation, evaluation methods, and extensive empirical analysis for an automatic query expansion framework in which model estimation is cast as a r...
Kevyn Collins-Thompson
CIKM
2010
Springer
13 years 5 months ago
A unified optimization framework for robust pseudo-relevance feedback algorithms
We present a flexible new optimization framework for finding effective, reliable pseudo-relevance feedback models that unifies existing complementary approaches in a principled wa...
Joshua V. Dillon, Kevyn Collins-Thompson
SIGIR
2002
ACM
13 years 7 months ago
Two-stage language models for information retrieval
The optimal settings of retrieval parameters often depend on both the document collection and the query, and are usually found through empirical tuning. In this paper, we propose ...
ChengXiang Zhai, John D. Lafferty