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A unified model for metasearch and the efficient evaluation of retrieval systems via the hedge algorithm

Javed A. Aslam, Virgiliu Pavlu, Robert Savell
2003 Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval - SIGIR '03  
We present a unified framework for simultaneously solving both the pooling problem (the construction of efficient document pools for the evaluation of retrieval systems) and metasearch (the fusion of ranked  ...  Choice of a loss function closely related to the Average Precision measure of system performance ensures that retrieved documents perform well, both as a metasearch list and as a pool for accurate evaluation  ...  IMPLEMENTATION Noting that a system performance measure suitable for evaluation of retrieval systems serves as a natural loss function for efficient online learning of system weights in a metasearch context  ... 
doi:10.1145/860435.860517 dblp:conf/sigir/AslamPS03 fatcat:veafoy3etbfoxnsyl73qydwow4

A unified model for metasearch and the efficient evaluation of retrieval systems via the hedge algorithm

Javed A. Aslam, Virgiliu Pavlu, Robert Savell
2003 Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval - SIGIR '03  
We present a unified framework for simultaneously solving both the pooling problem (the construction of efficient document pools for the evaluation of retrieval systems) and metasearch (the fusion of ranked  ...  Choice of a loss function closely related to the Average Precision measure of system performance ensures that retrieved documents perform well, both as a metasearch list and as a pool for accurate evaluation  ...  IMPLEMENTATION Noting that a system performance measure suitable for evaluation of retrieval systems serves as a natural loss function for efficient online learning of system weights in a metasearch context  ... 
doi:10.1145/860500.860517 fatcat:ukbm6eq46jay7o4owsultvj5wa

A unified model for metasearch, pooling, and system evaluation

Javed A. Aslam, Virgiliu Pavlu, Robert Savell
2003 Proceedings of the twelfth international conference on Information and knowledge management - CIKM '03  
We present a unified model which, given the ranked lists of documents returned by multiple retrieval systems in response to a given query, simultaneously solves the problems of (1) fusing the ranked lists  ...  the underlying retrieval systems with small numbers of relevance judgments (efficient system assessment).  ...  Our unified model for solving these three problems is based on the Hedge algorithm for on-line learning.  ... 
doi:10.1145/956950.956953 fatcat:yow6vkikfvasjkvqexiwnxvbwq

A unified model for metasearch, pooling, and system evaluation

Javed A. Aslam, Virgiliu Pavlu, Robert Savell
2003 Proceedings of the twelfth international conference on Information and knowledge management - CIKM '03  
We present a unified model which, given the ranked lists of documents returned by multiple retrieval systems in response to a given query, simultaneously solves the problems of (1) fusing the ranked lists  ...  the underlying retrieval systems with small numbers of relevance judgments (efficient system assessment).  ...  Our unified model for solving these three problems is based on the Hedge algorithm for on-line learning.  ... 
doi:10.1145/956863.956953 dblp:conf/cikm/AslamPS03 fatcat:prb3pspge5e4xle7qfdpehtdai

Possibly imperfect ontologies for effective information retrieval

Gábor Nagypál
2007
Naturally, the retrieval performance of the underlying metadata and content search algorithms affects the efficiency of the combined algorithm.  ...  Unified representation of temporal imperfection: A temporal model should represent the uncertainty, vagueness and subjectivity aspects of imperfection in a unified framework.  ... 
doi:10.5445/ksp/1000007206 fatcat:ytdvvlwburfq3bafbzzj25ka6e