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EDBT
2010
ACM
144views Database» more  EDBT 2010»
13 years 8 months ago
Timely YAGO: harvesting, querying, and visualizing temporal knowledge from Wikipedia
Recent progress in information extraction has shown how to automatically build large ontologies from high-quality sources like Wikipedia. But knowledge evolves over time; facts ha...
Yafang Wang, Mingjie Zhu, Lizhen Qu, Marc Spaniol,...
WWW
2006
ACM
14 years 5 months ago
Estimating required recall for successful knowledge acquisition from the web
Information on the Web is not only abundant but also redundant. This redundancy of information has an important consequence on the relation between the recall of an information ga...
Wolfgang Gatterbauer
WSDM
2012
ACM
252views Data Mining» more  WSDM 2012»
12 years 15 days ago
WebSets: extracting sets of entities from the web using unsupervised information extraction
We describe a open-domain information extraction method for extracting concept-instance pairs from an HTML corpus. Most earlier approaches to this problem rely on combining cluste...
Bhavana Bharat Dalvi, William W. Cohen, Jamie Call...
AIIA
2007
Springer
13 years 11 months ago
Harvesting Relational and Structured Knowledge for Ontology Building in the WPro Architecture
We present two algorithms for supporting semi-automatic ontology building, integrated in WPro, a new architecture for ontology learning from Web documents. The first algorithm auto...
Daniele Bagni, Marco Cappella, Maria Teresa Pazien...
VLDB
2011
ACM
251views Database» more  VLDB 2011»
12 years 12 months ago
Harvesting relational tables from lists on the web
A large number of web pages contain data structured in the form of “lists”. Many such lists can be further split into multi-column tables, which can then be used in more seman...
Hazem Elmeleegy, Jayant Madhavan, Alon Y. Halevy