2009 Fiscal Year Final Research Report
Corpus-driven development of a large-scale lexicon of lexical semantics structures
| Project/Area Number |
19700130
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Intelligent informatics
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
MIYAO Yusuke The University of Tokyo, 大学院・情報理工学系研究科, 助教 (00343096)
|
|---|
| Project Period (FY) |
2007 – 2009
|
| Keywords | 自然言語処理 / 意味構造 |
|---|
| Research Abstract |
We aim at the automatic analysis of semantic structures of natural language texts, and developed a large-scale lexicon of lexical semantics, which represents meanings a word inherently owns. Conventional lexicons cannot assign semantic structures to unknown words (words that do not exist in a lexicon). Therefore, this research proposed a method for representing word-to-semantics mappings as a probabilistic model. We empirically demonstrated that we can obtain a probabilistic model of a large-scale lexicon by using an existing lexicon as training data and statistics extracted from large texts as features.
|
