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syntax driven lexical semantic linking

syntax driven lexical semantic linking. Matt Rodatus Institute for Language and Information Technologies (http://ilit.umbc.edu/) Presentation for CMSC 471, 11/05/2008. direct object. determinant. subject. determinant. the. man. hit. the. building.

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syntax driven lexical semantic linking

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  1. syntax driven lexical semantic linking Matt Rodatus Institute for Language and Information Technologies (http://ilit.umbc.edu/) Presentation for CMSC 471, 11/05/2008

  2. direct object determinant subject determinant the man hit the building ((DET 1 0) (DET 4 3) (DOBJ 2 4) (NSUBJ 2 1)) syntax driven lexical semantic linking

  3. Lexicon Ontology HIT-SENSE1 HIT-EVENT THEME direct object subject AGENT HIT-SENSE2 DISCOVER-EVENT direct object THEME subject AGENT verb particle UPON syntax driven lexical semantic linking

  4. Ontology concept: HIT-EVENT slot: THEME filler: PHYSICAL-OBJECT slot: AGENT filler: ANIMAL slot: INSTRUMENT filler: PHYSICAL-OBJECT slot: LOCATION ... ... syntax driven lexical semantic linking

  5. Lexicon Ontology HIT-SENSE1 HIT-EVENT THEME direct object subject AGENT direct object determinant subject determinant HIT-EVENT-INSTANCE1 slot: THEME filler: “building” slot: AGENT filler: “man” the man hit the building syntax driven lexical semantic linking

  6. Lexicon Ontology HIT-SENSE1 HIT-EVENT THEME direct object subject AGENT direct object determinant subject determinant HIT-EVENT-INSTANCE1 slot: THEME filler: “building” slot: AGENT filler: “man” the man hit the building syntax driven lexical semantic linking

  7. To prune down the number of sense mappings, use a genetic algorithm to learn the weights (W) for a scoring formula involving features of a sense mapping (F) that gives the correct sense mapping the highest score. Scoring formula W1*F1 + W2*F2 + W3*F3 + ... Learn [W1 W2 W3 ...] via GA For each word: many senses, multiple mappings for each sense. Lots of sense mappings.

  8. Questions?

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