Parsing Algorithm: Filtering with compiled CFG (1/2)

• 2-phased parsing

  • Compiling HPSG to CFG with keeping important constraints.
  • Obtained CFG might overgenerate, but can be used in filtering.

Compile

HPSG

CFG

Feature

Structures

Input Sentences

Built-in CFG Parser

LiLFeS Unification

Parsing

+

Output

Complete parse trees

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