Information Extraction from Multiple Syntactic Sources: Identifying events and entity relations by combining different levels of syntactic processing with a discriminative model - Brossura

Zhao, Shubin

Brossura

ISBN 10: 3639205596 ISBN 13: 9783639205596

Casa editrice: VDM Verlag Dr. Müller, 2009

Riassunto

Information Extraction is the automatic extraction of facts from text, which includes detection of named entities, entity relations and events. Conventional approaches to Information Extraction try to find syntactic patterns based on deep processing of text, such as partial or full parsing. This book describes a novel supervised approach based on kernel methods. In this approach, customized kernels are used to match syntactic structures produced from different preprocessing phases. Individual kernels are combined into composite kernels to integrate all the information. The composite kernels can be used with various classifiers, such as Nearest Neighbor or Support Vector Machines. The main classifier being experimented is SVM due to its ability to generalize in large dimensional feature spaces. It will be shown that each level of syntactic information may contribute to Information Extraction tasks, and low level information can help to recover from errors in deep processing.

Su questo libro

Informazioni sull'autore

Dr. Shubin Zhao, received Ph.D. in Computer Science from New York University in 2005. His research interests include Information Extraction, Machine Learning and Data Mining. He has many paper publications in Natural Language Processing conferences. He is also the inventor of five patents.

Dettagli dell'edizione

• Editore: VDM Verlag Dr. Müller
• Data di pubblicazione: 2009
• Lingua: Inglese
• ISBN 10: 3639205596
• ISBN 13: 9783639205596
• Rilegatura: Copertina flessibile
• Numero di pagine: 124
• Contatto del produttore: non disponibile
• Persona responsabile: non disponibile