PPT-Syntactic Parsing: Part I

Author : jane-oiler | Published Date : 2017-01-15

Niranjan Balasubramanian Stony Brook University March 8 th and Mar 22 nd 2016 Many slides adapted from Ray Mooney Michael Collins and Chris Manning Notes http

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Syntactic Parsing: Part I: Transcript

Niranjan Balasubramanian Stony Brook University March 8 th and Mar 22 nd 2016 Many slides adapted from Ray Mooney Michael Collins and Chris Manning Notes http wwwcscolumbiaedu. Ling 571. Deep Processing Techniques for NLP. January 12, 2011. Roadmap . Motivation: . Parsing (In) efficiency. Dynamic Programming. Cocke. -. Kasami. -Younger Parsing Algorithm . Chomsky Normal Form. CS 4705. Julia Hirschberg. 1. Some slides adapted from Kathy McKeown and Dan Jurafsky. Syntactic Parsing. Declarative . formalisms like CFGs, FSAs define the . legal strings of a language. -- but only tell you whether a given string is legal in a particular language. In-domain vs out-domain. Annotated data in. Domain A. A. Parser. Training. Parsing texts in . Domain A. Parsing texts in Domain B . In-domain. Out-domain. Motivation. F. ew or no labeled resources exist for parsing text of the target domain.. Semi-supervised . dependency parsing. Supervised parsing . Training: Labeled data. Semi-supervised parsing. Training: Additional unlabeled data + labeled data. Unlabeled data. Labeled data. Semi-supervised Parsing. Parsing with CFGs. CMSC 723: Computational Linguistics I ― Session #7. Jimmy Lin. The . iSchool. University of Maryland. Wednesday, October 14, 2009. Today’s Agenda. Words… . structure…. meaning…. Top-down vs. bottom-up parsing. Top-down . vs. bottom-up . parsing. Ex. Ex. Ex. Ex. +. Nat. *. Nat. Nat. Ex. Ex. . . . Nat. | . (. Ex. ). | . Ex. . +. . Ex. | . Ex. . *. . Ex. Matched input string. 1. Some slides . adapted from Julia Hirschberg and Dan . Jurafsky. To view past videos:. http://. globe.cvn.columbia.edu:8080/oncampus.php?c=133ae14752e27fde909fdbd64c06b337. Usually available only for 1 week. Right now, available for all previous lectures. CS 4705. Julia Hirschberg. 1. Some slides adapted from Kathy McKeown and Dan Jurafsky. Syntactic Parsing. Declarative . formalisms like CFGs, FSAs define the . legal strings of a language. -- but only tell you whether a given string is legal in a particular language. We . look at two of the tasks involved in the compilation process. break the source code into lexemes units . (lexical analysis) . the goal is to identify each lexeme and assign it to its proper . token. Semantic Parsing. Converting natural language to a logical form. e.g., executable code for a specific application. Example:. Airline reservations. Geographical query systems. Stages of Semantic . Parsing. Parsing Giuseppe Attardi Dipartimento di Informatica Università di Pisa Università di Pisa Question Answering at TREC Consists of answering a set of 500 fact-based questions, e.g. “When was Mozart born Parsing Giuseppe Attardi Dipartimento di Informatica Università di Pisa Università di Pisa Question Answering at TREC Consists of answering a set of 500 fact-based questions, e.g. “When was Mozart born the Department set of this grammar the grammar in which very powerful of movinga new AcknowledgmentsI am very grateful to the many people who have influenced this research and madethis thesis possible Courtin Damien Genthial - IMAG CAMPUS BP 53 38040 GRENOBLE CEDEX 9 476 51 49 15 E-Mail JacquesCourtinimagfr DamienGenthialimagfr Abstract After a short recall of our view of dependency grammars we pre

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