Human Language Technology for the Semantic Web

author: Hamish Cunningham, University of Sheffield

Categories

Top: Computer Science: Semantic Web
Top: Computer Science: Machine Learning: Human Language Technology

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*Slides*
0:02	Metadata Extraction: Human Language Technology and the Semantic Web http://gate.ac.uk/ http://nlp.shef.ac.uk/ Hamish Cunningham Kalina Bontcheva Valentin Tablan Diana Maynard SEKT meeting,
0:56	The Knowledge Economy and Human Language
2:02	HLT and Knowledge: Closing the Language Loop
3:27	Structure of the Tutorial
4:34	Information Extraction
9:18	MUC-7 tasks
9:56	An Example
12:04	Performance levels
17:20	What are Named Entities?
18:39	What are Named Entities (2)
18:51	Basic Problems in NE
19:48	More complex problems in NE
21:08	Corpora and System Development
21:45	Some NE Annotated Corpora
23:23	The MUC-7 corpus
24:12	The MUC-7 Corpus (2)
25:41	ACE – Towards Semantic Tagging of Entities
27:01	ACE Entities
27:05	ACE Example
27:08	Annotation Tools: Alembic, GATE, ...
27:56	Performance Evaluation
28:20	The Evaluation Metric (2)
30:25	The GATE Evaluation Tool
32:13	Corpus-level Regression Testing
32:40	Regression Testing (2)
32:52	Challenge: Evaluating Richer NE Tagging
34:08	SW IE Evaluation tasks
40:41	Structure of the Tutorial
40:58	Two kinds of IE approaches

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