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» A study of query length
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ACL
2007
13 years 9 months ago
User Requirements Analysis for Meeting Information Retrieval Based on Query Elicitation
We present a user requirements study for Question Answering on meeting records that assesses the difficulty of users questions in terms of what type of knowledge is required in or...
Vincenzo Pallotta, Violeta Seretan, Marita Ailomaa
ICDE
2000
IEEE
144views Database» more  ICDE 2000»
14 years 9 months ago
Power Conservative Multi-Attribute Queries on Data Broadcast
In this paper, we study power conservation techniques for multi-attribute queries on wireless data broadcast channels. Indexing data on broadcast channels can improve client filte...
Qinglong Hu, Wang-Chien Lee, Dik Lun Lee
VLDB
2007
ACM
152views Database» more  VLDB 2007»
14 years 8 months ago
Structured Materialized Views for XML Queries
The performance of XML database queries can be greatly enhanced by rewriting them using materialized views. We study the problem of rewriting a query using materialized views, whe...
Andrei Arion, Ioana Manolescu, Véronique Be...
W2GIS
2007
Springer
14 years 2 months ago
Historic Queries in Geosensor Networks
Abstract. This paper addresses—to our knowledge, for the first time—the problem of querying a geosensor network—a sensor network of mobile, locationaware nodes—for histori...
Stephan Winter, Sören Dupke, Lin Jie Guan, Ca...
RIAO
2004
13 years 9 months ago
Subject Knowledge, Thesaurus-assisted Query Expansion and Search Success
This study explored how experts and novices in pedagogics expanded queries supported by the ERIC thesaurus, and how this was connected to the search success in an easy and a diffi...
Anne Sihvonen, Pertti Vakkari