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Semantic Representation

Semantic Representation. Soma Paul, Rajeev Sangal. Objective. To present a form of logical representation that makes the semantic information more explicit through: a. Type information b. Nesting: How much unfolding is required. Dependency Structure: We start with.

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Semantic Representation

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  1. Semantic Representation Soma Paul, Rajeev Sangal

  2. Objective To present a form of logical representation that makes the semantic information more explicit through: a. Type information b. Nesting: How much unfolding is required

  3. Dependency Structure: We start with Ritu ne Binu ko miThAi ke Dabbe se ek miThAi dI Ritu Binu sweet box one sweet gave ‘Ritu gave Binu one sweet from the box of sweet’ dI k1 k4 k5 k2 Ritu Binu DabbA miThAi r6nmod miThAi ek

  4. r6 DabbA miThAi k5 k1 k4 Ritu dI Binu k2 nmod ek miThAi Graphical representation: r6 DabbA miThAi k5

  5. count miThAi Amount: 1 More explicit information encoded: • The concepts are translated into monadic predicates • The relations labels become the dyadic predicate. The arrow pointing towards the circle is argument 1 and the arrow pointing away is argument 2 • The names Ritu, miThai are mapped to constants & variables are assigned for other concepts Thing: MiThai r6 DabbA k5 k1 k4 Person: Ritu denA Person: Binu k2 Thing: MiThAi@1 (x)(y)(Person(Ritu), denA(x), Person(Binu), Thing(miThAi), DabbA(y), r6(y,miThai), k1(x,Ritu), k4(x,Binu), k2(x, miThai), count(miThai,1) )

  6. Noun and its modifiers: • Jaypur kA gurukUl ‘gurukUl in Jaypul’ • Devdatta kA gurukUl ‘kUl of Devdatta’s teacher’ gurukul gurukul r6 r6 Jaypur Devdatta

  7. Complex Entity: kul r6 guru jaypur Complex Entity: kul r6 guru devdatta r6 guru Contd … gurukul kul  r6 pof  r6 jaypur jaypurguru gurukul kul pof r6  guru  r6 devdatta devdatta

  8. More instances: Hindi: pAl rAjvaMsh SISam kI lakRI kI kursI Ritu kI lakRI kI kursI

  9. Bangla: AuS dhAnkhet ‘field of Aush paddy’ pAl rAjbangSo ‘royal dynasty of Pal’ uttamkumArer SAjghar ‘Uttam Kumar’s make-up room’ sTudior SAjghar ‘make-up room in (the) studio’ SAl kATher Tebil ‘Table (made up) of Shal wood’ Ritur kATher Tebil ‘Ritu’s wooden table’

  10. Complex Entity: kul r6 guru jaypur Complex Entity: kul r6 guru devdatta r6 guru Logical representation: (c: comp ent)(x: city) (name(x, jaypur), descr(c, (y: guru)(z: kul), head(z, c), r6(z, y)), r6(c,x)) (c: comp ent)(x: person) (name(x, Devdatta), descr(c, (y: guru)(z: kul), head(z, c), r6(z,y)), r6(y,x))

  11. Complex Entity: devdatta Complex Entity: kul kul r6 r6 guru guru devdatta r6 guru Ambiguity kUl(x),(y)(guru(y), r6(x,y) P(kUl(x),(y)[guru(u), r6(x,y),(w)(P(w), r6(y,w)]

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