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Korean Treebank & Propbank

Korean Treebank & Propbank. Martha Palmer, Narae Han, Jinyoung Choi, Shijong Ryu University of Pennsylvania May 23, 2005. Outline. Status Report Korean Treebank Korean Propbank Frames Files lemma Split Argument. Korean Treebank - Done. Virginia Corpus

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Korean Treebank & Propbank

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  1. Korean Treebank & Propbank Martha Palmer, Narae Han, Jinyoung Choi, Shijong Ryu University of Pennsylvania May 23, 2005

  2. Outline • Status Report • Korean Treebank • Korean Propbank • Frames Files • lemma • Split Argument

  3. Korean Treebank - Done • Virginia Corpus • 54.5 thousand words (symbols tokenized) • Language training in a military setting • Newswire Corpus • 131.8 thousand words (symbols tokenized) • Korean Press Agency news articles from June 2, 1994, to March 20, 2000

  4. Korean Propbank – Current Status • First subtask: 54.5K Virginia corpus • 9,590 predicate tokens double-annotated (100%) • Second subtask: 131.8K Newswire corpus • 3,800 predicate tokens annotated out of 23,700 (15%) • Frames files • 1,800 predicates out of 2,800 (64%)

  5. Korean Frames files • Similar xml structure to English and Chinese Frames files to get compatibilty • Lemma of Korean Frames files is root, not stem • Stem = Root + Derivational suffix • Root has its own predicate argument structure • Derivational suffix has grammatical function

  6. Frames filse 1 – verb root • frameset meok.01 "eat": • Roleset: • ArgA: causer • Arg0: eater • Arg1: food • ‘meok-ta’: active form • Arg0: SBJ • Arg1: OBJ • ‘meok-hi-ta’ : passive form • Arg0: COMP • Arg1: SBJ • ‘meok-i-ta’: causative form • ArgA: SBJ • Arg0: COMP • Arg1: OBJ

  7. Frames files 2 – deverbal noun • frameset kong-keup.01 “supply": • Roleset: • Arg0: giver • Arg1: thing provided • Arg2: receiver • ‘kong-keup-ha-ta’: active form • Arg0: SBJ • Arg1: OBJ • Arg2: COMP • ‘kong-keup-toe-ta’ : passive form • Arg0: S • Arg1: SBJ • Arg2: COMP • ‘kong-keup-pat-ta’: recipient form • Arg0: COMP • Arg1: OBJ • Arg2: SBJ

  8. Split Arguments • Possessor & Possessee • Floating Quantifier • Small Clause • Deverbal Noun structure

  9. Possessor & Possessee 1 • kho-kki-ri-ka kho-ka kil-ta. Elephant’s trunk is long • a-peo-ci-ka ton-i phil-yo-ha-ta. Father needs money • (S (NP-SBJ kho-kki-ri-ka) elephant-nom (S (NP-SBJ kho-ka) trunk-nom (ADJP kil-ta))) long • (S (NP-SBJ a-peo-ci-ka) father-nom (S (NP-SBJ ton-i) money-nom (ADJP phil-yo-ha-ta))) need

  10. Possessor & Possessee 2 • kho-kki-ri-yi kho-ka kil-ta. Elephant’s trunk is long • *a-peo-ci-yi ton-i phil-yo-ha-ta. *Father’s money needs • (S (NP-SBJ (NP kho-kki-ri-yi) elephant-poss (NP kho-ka)) trunk-nom (ADJP kil-ta)) long • (S (NP-SBJ (NP a-peo-ci-yi)) father-poss (NP ton-i)) money-nom (ADJP (NP-COMP *pro*) phil-yo-ha-ta)) need

  11. Floating Quantifier • hak-saeng-i se myeong-i o-ass-ta. Three student came. • (S (NP-SBJ hak-saeng-i) student-nom (VP (NP-ADV se myeong-i) three-nom (VP o-ass-ta))) come-past • se myeong-yi hak-saeng-i o-ass-ta. • (S (NP-SBJ (NP se myeong-i) three-poss (NP hak-saeng-i)) student-nom (VP o-ass-ta)) come-past

  12. Small Clause 1 • na-neun keu-reul pa-po-ro saeng-kak-ha-eoss-ta. ‘I thought of him as a fool’ • na-neun keu-reul pan-cang-eu-ro ppop-ass-ta. ‘I elected him as the class president’ • (S (NP-SBJ na-neun) I-nom (VP (NP-OBJ keu-reul) him-acc (NP-COMP pa-po-ro) fool-abl saeng-kak-haess-ta)) think-past • (S (NP-SBJ na-neun) I-nom (VP (NP-OBJ keu-reul) him-acc (NP-COMP pan-cang-eu-ro) class president-abl ppop-ass-ta)) elect-past

  13. Small Clause 2 • na-neun keu-ka pa-po-ra-ko saeng-kak-ha-eoss-ta. • * na-neun keu-ka pan-cang-i-ra-ko ppop-ass-ta. • saeng-kak Arg0: thinker Arg1: thought • ppop- Arg0: voter Arg1: candidate Arg2: position

  14. Deverbal Noun structure 1 • na-neun eom-ma-e-ke-seo neuc-ke wa-to coh-ta-ko heo-rak-eul pat-ass-ta. ‘I had permission from mom that I can return home late’ • (S (NP-SBJ na-neun) (VP (NP-COMP eom-ma-e-ke-seo) (VP (S (S-SBJ (NP-SBJ *pro*) (VP (ADVP neuc-ke) (VP wa-to))) (ADJP coh-ta-ko)) (VP (NP-OBJ heo-rak-eul) pat-ass-ta))))

  15. Deverbal Noun structure 2 • na-neun eom-ma-e-ke-seo neuc-ke wa-to coh-ta-neun heo-rak-eul pat-ass-ta. • (S (NP-SBJ na-neun) (VP (NP-COMP eom-ma-e-ke-seo) (NP-OBJ (S (S-SBJ (NP-SBJ *pro*) (VP (ADVP neuc-ke) (VP wa-to))) (ADJP coh-ta-neun)) (NP heo-rak-eul)) pat-ass-ta)) • pat- • Arg0: receiver • Arg1: thing gotten • Arg2: giver

  16. Throughput • Creating Frames files • Approximately 70 predicates per week • Need 14 weeks to complete Frames files • Annotation • Approximately 1,600 predicate tokens per week • Need 14 weeks to complete annotation for the Newswire corpus

  17. To be done in future • Adjudicate & publish Korean Propbank • Revise Korean treebank guideline • Write Korean propbank guideline

  18. Thank You

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