Sciweavers

2850 search results - page 30 / 570
» Answering Queries using Humans, Algorithms and Databases
Sort
View
PODS
1997
ACM
149views Database» more  PODS 1997»
14 years 19 days ago
Answering Recursive Queries Using Views
We consider the problem of answering datalog queries using materialized views. The ability to answer queries using views is crucial in the context of information integration. Prev...
Oliver M. Duschka, Michael R. Genesereth
VLDB
2004
ACM
124views Database» more  VLDB 2004»
14 years 1 months ago
Data Sharing Through Query Translation in Autonomous Sources
We consider the problem of data sharing between autonomous data sources in an environment where constraints cannot be placed on the shared contents of sources. Our solutions rely ...
Anastasios Kementsietsidis, Marcelo Arenas
KDD
1994
ACM
98views Data Mining» more  KDD 1994»
14 years 16 days ago
Rule Induction for Semantic Query Optimization
Semantic query optimization can dramatically speed up database query answering by knowledge intensive reformulation. But the problem of how to learn required semantic rules has no...
Chun-Nan Hsu, Craig A. Knoblock
ICDT
1995
ACM
79views Database» more  ICDT 1995»
14 years 15 hour ago
Optimization Using Tuple Subsumption
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...
Venky Harinarayan, Ashish Gupta
ICDE
2005
IEEE
86views Database» more  ICDE 2005»
14 years 9 months ago
Personalized Queries under a Generalized Preference Model
Query Personalization is the process of dynamically enhancing a query with related user preferences stored in a user profile with the aim of providing personalized answers. The un...
Georgia Koutrika, Yannis E. Ioannidis