Natural Language Processing 9 Tomita Parser

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Natural Language Processing(9) Tomita Parser

• Dr. Xuan Wang(? ?)
• Intelligence Computing Research Center
• Harbin Institute of Technology Shenzhen Graduate
  School
• Slides from Slides from Dr. Mary P. Harper ECE,
  Purdue University

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Project 3 Chart Parser

• Install NLTK
• http//nltk.sourceforge.net/install.html
• Install Python
• Implement A Chart Parser with NLTK
  http//nltk.sourceforge.net/tutorial/chart_parsing
  /nochunks.html

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Chart Parsing

• Grammar
• 1. S -gt NP VP2. NP -gt ART ADJ N3. NP -gt ART
  N4. NP -gt ADJ N5. VP -gt AUX V NP6. VP -gt V NP
• Sentence
• 0 The 1 large 2 can 3 can 4 hold 5 the 6 water 7

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• Lexicon
• the... ARTlarge... ADJcan... AUX, N,
  Vhold... N, Vwater... N, V

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NLTK

• NLTK, the Natural Language Toolkit, is a suite of
  Python libraries and programs for symbolic and
  statistical natural language processing. NLTK
  includes graphical demonstrations and sample
  data. It is accompanied by extensive
  documentation, including tutorials that explain
  the underlying concepts behind the language
  processing tasks supported by the toolkit.
• NLTK is ideally suited to students who are
  learning NLP (natural language processing) or
  conducting research in NLP or closely related
  areas, including empirical linguistics, cognitive
  science, artificial intelligence, information
  retrieval, and machine learning. NLTK has been
  used successfully as a teaching tool, as an
  individual study tool, and as a platform for
  prototyping and building research systems.

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Worlds Superstar1997 Turing Award Winners

• Douglas Engelbart
• For an inspiring vision of the future of
  interactive computing and the invention of key
  technologies to help realize this vision.

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• Douglas Engelbart Develops The Mouse, GUI, And
  First Hypertext System
• father of the mouse
• the mother of all demos

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(No Transcript)
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• http//www.ibiblio.org/pioneers/englebart.html
• http//www.superkids.com/aweb/pages/features/mouse
  /mouse.html
• http//www.thocp.net/biographies/engelbart_douglas
  .html

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• Thanks!