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WWW
2007
ACM
14 years 8 months ago
Identifying ambiguous queries in web search
It is widely believed that some queries submitted to search engines are by nature ambiguous (e.g., java, apple). However, few studies have investigated the questions of "how ...
Ruihua Song, Zhenxiao Luo, Ji-Rong Wen, Yong Yu, H...
W2GIS
2007
Springer
14 years 1 months ago
Continuous Perspective Query Processing for 3-D Objects on Road Networks
In order to provide a streaming service of 3-D spatial objects to the mobile clients on a street, we propose a new query type, called continuous perspective query. The perspective ...
Joon-Seok Kim, Kyoung-Sook Kim, Ki-Joune Li
ICEIS
2006
IEEE
14 years 1 months ago
Filtering Unsatisfiable XPATH Queries
The satisfiability test checks, whether or not the evaluation of a query returns the empty set for any input document, and can be used in query optimization for avoiding the submis...
Jinghua Groppe, Sven Groppe
VLDB
2004
ACM
124views Database» more  VLDB 2004»
14 years 27 days ago
Containment of Nested XML Queries
Query containment is the most fundamental relationship between a pair of database queries: a query Q is said to be contained in a query Q if the answer for Q is always a subset of...
Xin Dong, Alon Y. Halevy, Igor Tatarinov
CIKM
2008
Springer
13 years 9 months ago
Modeling and exploiting query interactions in database systems
The typical workload in a database system consists of a mixture of multiple queries of different types, running concurrently and interacting with each other. Hence, optimizing per...
Mumtaz Ahmad, Ashraf Aboulnaga, Shivnath Babu, Kam...