..........................................NEXT PREVIOUS INDEX
 

 L01 Intro NLP - Applications and Techniques


          NLP : Introduction

o  Language:  A unique ability of humans
 
o  Language for communication
    -  Major function of language: communication.  
        * How ideas get transferred?
 
o  Applications
    - Information extraction
       * Machine goes through text,
         fills in a template
    - Information retrieval
       * Keyword indexing
       * Phrasal indexing
       * XML tagging
    - Question answering
       * Understanding and action
    - Machine translation
       * Sentential analyzers
       * Bilingual dictionary
    - Dialogue systems
       * Expectation
       * Focus
       * Topic

o  Form & meaning
    - Sentences -> Meaning
       * Done in layers. Output of each layer
         successively makes meaning more explicit
         (i.e., closer to meaning or gives a
         representation which machine can handle
         more easily)
    - How can meaning be represented ?

o  Techniques for "extracting meaning"
    - Word analysis
    - Phrasal analysis
    - Sentential analysis
       etc.
    - Statistical analysis: tagging,
      grammatical attachment, word sense
..........................................NEXT PREVIOUS INDEX