基於詞彙語義的百科辭典知識提取實驗 (An Experiment on Knowledge Extraction from an Encyclopedia Based on Lexicon Semantics)

The typical approaches to extracting text knowledge are sentential parsing and pattern matching. Theoretically, text knowledge extraction should be based on complete understanding, so the technology of sentential parsing is used in the field . However, the fragility of systems and highly ambiguous parse results are serious problems. On the other hand, by avoiding thorough parsing, pattern matching becomes highly efficient. However, different expressions of the same information will dramatically increase the number of patterns and nullify the simplicity of the approach. Parsing in Chinese encounters greater barriers than that in English does. Firstly, Chinese lacks morphology. For example, recognition of base-NP in Chinese is more difficult than that in English because its left boundary is hard to discern. * 北京語言大學計算機系 Beijing Language and Culture University E-mail: [email protected] + 北京工業大學計算機學院 Beijing Polytechnic University E-mail: hopexy [email protected]