Sciweavers

513 search results - page 45 / 103
» Cache Conscious Algorithms for Relational Query Processing
Sort
View
PODS
1999
ACM
133views Database» more  PODS 1999»
15 years 2 months ago
Processing and Optimization of Multiway Spatial Joins Using R-Trees
One of the most important types of query processing in spatial databases and geographic information systems is the spatial join, an operation that selects, from two relations, all...
Dimitris Papadias, Nikos Mamoulis, Yannis Theodori...
WWW
2009
ACM
15 years 10 months ago
Measuring the similarity between implicit semantic relations from the web
Measuring the similarity between semantic relations that hold among entities is an important and necessary step in various Web related tasks such as relation extraction, informati...
Danushka Bollegala, Yutaka Matsuo, Mitsuru Ishizuk...
IUI
2006
ACM
15 years 3 months ago
Towards intelligent QA interfaces: discourse processing for context questions
Question answering (QA) systems take users’ natural language questions and retrieve relevant answers from large repositories of free texts. Despite recent progress in QA researc...
Mingyu Sun, Joyce Y. Chai
SIGMOD
2004
ACM
163views Database» more  SIGMOD 2004»
15 years 9 months ago
Rank-aware Query Optimization
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...
Ihab F. Ilyas, Rahul Shah, Walid G. Aref, Jeffrey ...
SIGIR
2008
ACM
14 years 9 months ago
Efficient top-k querying over social-tagging networks
Online communities have become popular for publishing and searching content, as well as for finding and connecting to other users. User-generated content includes, for example, pe...
Ralf Schenkel, Tom Crecelius, Mouna Kacimi, Sebast...