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  L15 Levels of analysis


       Levels of Analysis

o  There are several levels of analysis. Shown below with example.

    - ---- surface level  (sentence)
    +          (Ram went to school)
    +
    - ---- vibhakti level (phrase structure tree)
    +          (go::  subj: Ram,  to-prep: school)
    +
    - ---- karaka level   (modifier-modified tree)
    +          (go::  k1: Ram,    k2: school)
    +
    - ---- theta level    (agent, theme, etc.)
    +
    +
    - ---- semantic level (most abstract mental)

o  First level of analysis yields vibhakti information (including 
   phrase structure trees, in case of Enlish)

o  Second level of analysis yields modifier-modified trees
    - Karaka chart of 'go' associates karaka role with vibhakti of
      each argument (for active voice of 'go'):
         KARAKA VIBHAKTI  NECESSITY
       *  k1     subj      mand.
       *  k2     to-prep   mand.
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