'Pcfgs' diaporamas de présentation

Corpora and Statistical Methods Lecture 11

Corpora and Statistical Methods Lecture 11. Albert Gatt. Part 2. Statistical parsing. Preliminary issues. How parsers are evaluated. Evaluation. The issue: what objective criterion are we trying to maximise?

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Hand video

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Lexicalization of PCFGs

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Constituency Parser Evaluation

Constituency Parser Evaluation. Evaluating constituency parsing. Evaluating constituency parsing. Gold standard brackets : S -(0:11), NP-(0:2) , VP-(2:9), VP-(3:9), NP-(4:6) , PP-(6-9), NP-(7,9), NP-(9:10 ) Candidate brackets:

258 views • 5 slides