Development of Japanese CCG parser "lightblue"
| Project/Area Number |
18H03284
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 61030:Intelligent informatics-related
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| Research Institution | Ochanomizu University |
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Principal Investigator |
Bekki Daisuke お茶の水女子大学, 基幹研究院, 教授 (90431783)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Keywords | 計算言語学 / 組合せ範疇文法 / 統語解析 / 深層ニューラルネットワーク / 統語解析器 / 形式意味論 / 深層学習 / 依存型理論 / 含意関係認識 |
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| Outline of Final Research Achievements |
The aim of this research was to develop a CCG syntactic parser based on a hybrid method of theoretical linguistics and deep neural networks. We successfully formulated and implemented RNN-CCG, a system that converts the grammatical theory of RNNG from CFG to CCG. We also studied automatic theorem prover with Dependent-Type Semantics (DTS) and successfully implemented a proof search algorithm by Haskell. In parallel, we also conducted research to evaluate the performance of natural language inference tasks with large-scale language models and showed their limitations, and empirical research in theoretical linguistics using dependent tye semantics, such as comparative constructions, Weak Crossover and the Proviso problem.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では、理論言語学と機械学習を融合させた深い意味解析を行う手法や、自然言語理解の自動化を可能にするCCGパーザと依存型意味論(DTS)の研究など、自然言語処理における重要な課題に取り組んできました。これらの研究成果は、査読付き国際学会や国内学会の発表を通じて学術的に評価され、また企業向けのセミナーやメディア掲載などを通じて社会に還元されました。今後、自然言語処理のさらなる進展に向けて、理論言語学と深層学習のハイブリッドアプローチを進めることが求められます。
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Report
(5 results)
Research Products
(50 results)
