Head-driven Phrase Structure Grammar I

Head-driven Phrase Structure Grammar I Head-driven Phrase Structure Grammar I

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Basic Idea Typed feature structure HPSG: First glance Unification: An example (3) q 0 SUBJ P RED q 1 AGR q 2 P ERS q 3 q 1 ′ SUBJ q 6 q 0 ′ P ERS q 4 AGR q 5 NUM P RED q 7 q ′ 3 AGR q 2 ′ AGR {q 1 , q 1 ′ } SUBJ AGR P ERS {q 0 , q 0 ′ } {q 2 , q 5 , q 2 ′ } P RED NUM {q 4 , q ′ 3 } AGR {q 3 , q ′ 6 } {q 7 } Weiwei Sun Head-driven Phrase Structure Grammar I 38/61

Basic Idea Typed feature structure HPSG: First glance Unification: An example (3) q 0 SUBJ P RED q 1 AGR q 2 P ERS q 3 q 1 ′ SUBJ q 6 q 0 ′ P ERS q 4 AGR q 5 NUM P RED q 7 q ′ 3 AGR q 2 ′ AGR {q 1 , q 1 ′ } SUBJ AGR P ERS {q 0 , q 0 ′ } {q 2 , q 5 , q 2 ′ } P RED NUM {q 4 , q ′ 3 } AGR {q 3 , q ′ 6 } {q 7 } Weiwei Sun Head-driven Phrase Structure Grammar I 38/61

Basic Idea Typed feature structure HPSG: First glance<br />

Unification: An example (3)<br />

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<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

q 0<br />

SUBJ<br />

P RED<br />

q 1 AGR q 2 P ERS q 3<br />

q 1<br />

′<br />

SUBJ<br />

q 6 q 0<br />

′<br />

P ERS<br />

q 4 AGR q 5 NUM <br />

P RED<br />

q 7 <br />

q ′ 3<br />

AGR<br />

<br />

q 2<br />

′<br />

AGR<br />

{q 1 , q 1 ′ }<br />

SUBJ<br />

AGR P ERS<br />

<br />

{q 0 , q 0 ′ } {q 2 , q 5 , q 2 ′ }<br />

P RED NUM<br />

<br />

{q 4 , q ′ 3 } AGR<br />

{q 3 , q ′ 6 }<br />

{q 7 }<br />

Weiwei Sun <strong>Head</strong>-<strong>driven</strong> <strong>Phrase</strong> <strong>Structure</strong> <strong>Grammar</strong> I 38/61

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