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» Query Answering for OWL-DL with Rules
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DEXAW
2007
IEEE
138views Database» more  DEXAW 2007»
15 years 3 months ago
Machine Learning for Question Answering from Tabular Data
Question Answering (QA) systems automatically answer natural language questions in a human-like manner. One of the practical approaches to open domain QA consists in extracting fa...
Mahboob Alam Khalid, Valentin Jijkoun, Maarten de ...
AWIC
2005
Springer
15 years 3 months ago
Specifying Schema Mappings for Query Reformulation in Data Integration Systems
In data integration systems there is a problem of answering queries through a target schema, given a set of mappings between source schemas and the target schema, and given that th...
Tadeusz Pankowski
KDD
2004
ACM
139views Data Mining» more  KDD 2004»
15 years 10 months ago
Machine learning for online query relaxation
In this paper we provide a fast, data-driven solution to the failing query problem: given a query that returns an empty answer, how can one relax the query's constraints so t...
Ion Muslea
SIGMOD
2012
ACM
224views Database» more  SIGMOD 2012»
12 years 12 months ago
Tiresias: the database oracle for how-to queries
How-To queries answer fundamental data analysis questions of the form: “How should the input change in order to achieve the desired output”. As a Reverse Data Management probl...
Alexandra Meliou, Dan Suciu
SIGMOD
2004
ACM
163views Database» more  SIGMOD 2004»
15 years 9 months ago
Constraint-Based XML Query Rewriting For Data Integration
We study the problem of answering queries through a target schema, given a set of mappings between one or more source schemas and this target schema, and given that the data is at...
Cong Yu, Lucian Popa