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John Lafferty, Andrew McCallum, Fernando Pereira

2001/6/28

Icml

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ICML 2001 Conditional Random Fields: Probabilistic Models for Segmenting and Labeling Sequence Data Page 1 ICML 2001 Conditional Random Fields: Probabilistic Models for Segmenting and Labeling Sequence Data John Lafferty, Andrew McCallum, Fernando Pereira Presentation by Rongkun Shen Nov. 20, 2003 Page 2 Sequence Segmenting and Labeling • Goal: mark up sequences with content tags • Application in computational biology – DNA and protein sequence alignment – Sequence homolog searching in databases – Protein secondary structure prediction – RNA secondary structure analysis • Application in computational linguistics & computer science – Text and speech processing, including topic segmentation, part-of-speech (POS) tagging – Information extraction – Syntactic disambiguation Page 3 Example: Protein secondary structure prediction Conf: …