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150
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FQAS
2009
Springer
196views Database» more  FQAS 2009»
15 years 8 months ago
Flexible SPARQL Querying of Web Data Tables Driven by an Ontology
This paper concerns the design of a workflow which permits to feed and query a data warehouse opened on the Web, driven by a domain ontology. This data warehouse has been built to...
Patrice Buche, Juliette Dibie-Barthélemy, H...
ICDT
2001
ACM
131views Database» more  ICDT 2001»
15 years 8 months ago
Query Evaluation via Tree-Decompositions
A number of efficient methods for evaluating first-order and monadic-second order queries on finite relational structures are based on tree-decompositions of structures or quer...
Jörg Flum, Markus Frick, Martin Grohe
141
Voted
WCE
2007
15 years 4 months ago
An Intelligent Conversational Agent Approach to Extracting Queries from Natural Language
—This paper is concerned with the application of a conversational agent and expert system to provide a natural language interface to a database. Typically, natural language datab...
Karen Pudner, Keeley A. Crockett, Zuhair Bandar
212
Voted
CIE
2011
Springer
14 years 3 months ago
Automatic Learners with Feedback Queries
Automatic classes are classes of languages for which a finite automaton can decide whether a given element is in a set given by its index. The present work studies the learnabilit...
John Case, Sanjay Jain, Yuh Shin Ong, Pavel Semukh...
SIGMOD
2004
ACM
107views Database» more  SIGMOD 2004»
16 years 3 months ago
Static Optimization of Conjunctive Queries with Sliding Windows Over Infinite Streams
We define a framework for static optimization of sliding window conjunctive queries over infinite streams. When computational resources are sufficient, we propose that the goal of...
Ahmed Ayad, Jeffrey F. Naughton