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» Conjunctive Query Answering in EL using a Database System
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VLDB
1995
ACM
91views Database» more  VLDB 1995»
14 years 6 days ago
A Data Transformation System for Biological Data Sources
Scientific data of importance to biologists in the Humitn Genome Project resides not only in conventional da.tabases, but in structured files maintained in a number of different f...
Peter Buneman, Susan B. Davidson, Kyle Hart, G. Ch...
ICDT
1995
ACM
79views Database» more  ICDT 1995»
14 years 7 days 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
2007
IEEE
141views Database» more  ICDE 2007»
14 years 3 months ago
Self Managing Top-k (Summary, Keyword) Indexes in XML Retrieval
Retrieval queries that combine structural constraints with keyword search represent a significant challenge to XML data management systems. Queries are expected to be answered as...
Mariano P. Consens, Xin Gu, Yaron Kanza, Flavio Ri...
DATESO
2007
85views Database» more  DATESO 2007»
13 years 10 months ago
Improvement of Text Compression Parameters Using Cluster Analysis
Abstract. Several actions are usually performed when document is appended to textual database in information retrieval system. The most frequent actions are compression of the docu...
Jiri Dvorský, Jan Martinovic
ICDE
2008
IEEE
563views Database» more  ICDE 2008»
15 years 8 months ago
Probabilistic Verifiers: Evaluating Constrained Nearest-Neighbor Queries over Uncertain Data
In applications like location-based services, sensor monitoring and biological databases, the values of the database items are inherently uncertain in nature. An important query fo...
Reynold Cheng, Jinchuan Chen, Mohamed F. Mokbel, C...