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» Extracting and Querying a Comprehensive Web Database
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RULEML
2007
Springer
14 years 2 months ago
Querying the Semantic Web with SWRL
The SWRLTab is a development environment for working with SWRL rules in Protégé-OWL. It supports the editing and execution of SWRL rules. It also provides mechanisms to allow int...
Martin J. O'Connor, Samson W. Tu, Csongor Nyulas, ...
WWW
2011
ACM
13 years 3 months ago
FACTO: a fact lookup engine based on web tables
Recently answers for fact lookup queries have appeared on major search engines. For example, for the query {Barack Obama date of birth} Google directly shows “4 August 1961” a...
Xiaoxin Yin, Wenzhao Tan, Chao Liu
PODS
2010
ACM
250views Database» more  PODS 2010»
14 years 1 months ago
From information to knowledge: harvesting entities and relationships from web sources
There are major trends to advance the functionality of search engines to a more expressive semantic level. This is enabled by the advent of knowledge-sharing communities such as W...
Gerhard Weikum, Martin Theobald
SIGMOD
2000
ACM
236views Database» more  SIGMOD 2000»
14 years 29 days ago
XTRACT: A System for Extracting Document Type Descriptors from XML Documents
XML is rapidly emerging as the new standard for data representation and exchange on the Web. An XML document can be accompanied by a Document Type Descriptor (DTD) which plays the...
Minos N. Garofalakis, Aristides Gionis, Rajeev Ras...
IDEAS
2005
IEEE
142views Database» more  IDEAS 2005»
14 years 2 months ago
Automatically Maintaining Wrappers for Web Sources
A substantial subset of the web data follows some kind of underlying structure. Nevertheless, HTML does not contain any schema or semantic information about the data it represents...
Juan Raposo, Alberto Pan, Manuel Álvarez, J...