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SIGIR
2010
ACM
15 years 1 months ago
Positional relevance model for pseudo-relevance feedback
Pseudo-relevance feedback is an effective technique for improving retrieval results. Traditional feedback algorithms use a whole feedback document as a unit to extract words for ...
Yuanhua Lv, ChengXiang Zhai
ICWS
2007
IEEE
14 years 11 months ago
A Platform for Context Aware Runtime Web Service Discovery
In this paper we describe a platform that supports context aware runtime service discovery. The platform supports service discovery based on structural and behavioural service mod...
George Spanoudakis, Khaled Mahbub, Andrea Zisman
CLEF
2003
Springer
15 years 3 months ago
Comparing Weighting Models for Monolingual Information Retrieval
Motivated by the hypothesis that the retrieval performance of a weighting model is independent of the language in which queries and collection are expressed, we compared the retrie...
Gianni Amati, Claudio Carpineto, Giovanni Romano
CLOUDCOM
2010
Springer
14 years 7 months ago
Voronoi-Based Geospatial Query Processing with MapReduce
Geospatial queries (GQ) have been used in a wide variety of applications such as decision support systems, profile-based marketing, bioinformatics and GIS. Most of the existing qu...
Afsin Akdogan, Ugur Demiryurek, Farnoush Banaei Ka...
ICDE
1999
IEEE
106views Database» more  ICDE 1999»
15 years 11 months ago
Processing Operations with Restrictions in RDBMS without External Sorting: The Tetris Algorithm
Most operations of the relational algebra or SQL require a sorted stream of tuples for efficient processing. Therefore, processing complex relational queries relies on efficient a...
Volker Markl, Martin Zirkel, Rudolf Bayer