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74.793 NLP and Speech. Course Review. NLP Syntax Analysis - Processes. Part-of-Speech (POS) Tagging. Morphological Analyzer. Parser. Grammar Rules. Lexicon. the the – determiner Det NP → Det Noun NP recognized NP Det Noun parse tree. Linguistic Background Knowledge.

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NLP Syntax Analysis - Processes

Part-of-Speech

(POS)

Tagging

Morphological

Analyzer

Parser

Grammar

Rules

Lexicon

thethe – determinerDetNP → Det NounNP recognized

NP

Det Noun

parse tree

Linguistic Background Knowledge

what you should know
What you should know!

Areas, Terminology

  • Morphology, Syntax, Semantics, Pragmatics, Speech, Dialogue, Spoken Language
  • Metaphors
  • Intentions
  • Ambiguity (syntactic and lexical/ semantic)
what you should be able to do
What you should be able to do!
  • Classify language phenomenon or method into category above.
  • Describe the areas briefly.
what you should know1
What you should know!

Basic theoretical concepts:

  • Formal Grammars and Languages
  • FSA (finite state automata, regular languages)
  • CF (context-free grammars/languages)
  • CS (context-sensitive --- )
what you should know2
What you should know!

Syntax: Concepts and Methods

  • Parsing (bottom up; top down)
  • Parse Trees
  • Problems in Parsing (recursion, especially left-recursive rules; binding problem)
  • Charts and Chart-Parsing
  • Earley Algorithm
what you should know3
What you should know!

English Grammar

  • POS Categories
  • Phrases
  • Phrase Structure Grammar
  • NP Modification
  • VP Subcategorization
  • Feature Structures: Unification
  • Features in Grammar Rules
what you should be able to use
What you should be able to use!

Semantics

  • simple Case Frame structures
  • Inheritance Hierarchies with Roles (relations), Features (functional attributes), and IS-A links
  • First-Order Predicate Logic
what you should be able to do1
What you should be able to do!

Semantics

  • transformation between
    • CF structure and graphical representation (inheritance hierarchy)
    • CF structure and logic form
    • logic form and inheritance hierarchy

 DL

in both directions

student presentations
Student Presentations
  • Spatial Relations and Reasoning
  • Metaphors
  • Description Logics
  • DL and the Semantic Web
  • CommandTalk
  • Javelin
  • NL Generation
  • Speech and Translation
in addition
In Addition!
  • Be aware of and be able to apply the knowledge you gained in this course (hopefully)