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» Information Extraction and Semantic Constraints
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CLEF
2007
Springer
14 years 3 months ago
MIRACLE at GeoCLEF Query Parsing 2007: Extraction and Classification of Geographical Information
This paper describes the participation of MIRACLE research consortium at the Query Parsing task of GeoCLEF 2007. Our system is composed of three main modules. First, the Named Geo...
Sara Lana-Serrano, Julio Villena-Román, Jos...
SIGMOD
2008
ACM
90views Database» more  SIGMOD 2008»
14 years 9 months ago
Toward best-effort information extraction
Current approaches to develop information extraction (IE) programs have largely focused on producing precise IE results. As such, they suffer from three major limitations. First, ...
Warren Shen, Pedro DeRose, Robert McCann, AnHai Do...
SIGMOD
1999
ACM
132views Database» more  SIGMOD 1999»
14 years 2 months ago
Mind Your Vocabulary: Query Mapping Across Heterogeneous Information Sources
In this paper we present a mechanism for translating constraint queries, i.e., Boolean expressions of constraints, across heterogeneous information sources. Integrating such syste...
Kevin Chen-Chuan Chang, Hector Garcia-Molina
AAAI
2004
13 years 11 months ago
Interactive Information Extraction with Constrained Conditional Random Fields
Information Extraction methods can be used to automatically "fill-in" database forms from unstructured data such as Web documents or email. State-of-the-art methods have...
Trausti T. Kristjansson, Aron Culotta, Paul A. Vio...
JAMIA
2010
116views more  JAMIA 2010»
13 years 4 months ago
Extracting Rx information from clinical narrative
Objective The authors used the i2b2 Medication Extraction Challenge to evaluate their entity extraction methods, contribute to the generation of a publicly available collection of...
James G. Mork, Olivier Bodenreider, Dina Demner-Fu...