Head-driven Phrase Structure Grammar I
Head-driven Phrase Structure Grammar I Head-driven Phrase Structure Grammar I
Basic Idea Typed feature structure HPSG: First glance Unification: An example (2) SUBJ q ′ 1 AGR q ′ 0 P RED AGR q ′ 2 q ′ 3 ◮ Q ′ = {q ′ 0 , q′ 1 , q′ 2 , q′ 3 } ◮ r ′ = q ′ 0 ◮ θ ′ = {q 0 → predicate, q 1 → noun, q 2 → agreement, q 3 → verb} ◮ δ ′ = {(SUBJ, q ′ 0 ) → q′ 1 , (P RED, q′ 0 ) → q′ 3 , (AGR, q 1) → q 2 , (AGR, q 3 ) → q 2 } Weiwei Sun Head-driven Phrase Structure Grammar I 37/61
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
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Basic Idea Typed feature structure HPSG: First glance<br />
Unification: An example (2)<br />
<br />
<br />
SUBJ<br />
q ′ 1<br />
AGR<br />
<br />
q ′ 0<br />
P RED<br />
<br />
AGR<br />
q ′ 2<br />
q ′ 3<br />
◮ Q ′ = {q ′ 0 , q′ 1 , q′ 2 , q′ 3 }<br />
◮ r ′ = q ′ 0<br />
◮ θ ′ = {q 0 → predicate, q 1 → noun, q 2 → agreement, q 3 →<br />
verb}<br />
◮ δ ′ = {(SUBJ, q ′ 0 ) → q′ 1 , (P RED, q′ 0 ) → q′ 3 , (AGR, q 1) →<br />
q 2 , (AGR, q 3 ) → q 2 }<br />
Weiwei Sun <strong>Head</strong>-<strong>driven</strong> <strong>Phrase</strong> <strong>Structure</strong> <strong>Grammar</strong> I 37/61
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