Automatic Extraction of Contextual Co-occurrence Chain and Its Relationship with Textual Cohesion
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Sun Aizhen
Abstract
Semantic lexical chains have been regarded as important in textural cohesion, although traditionally, the classification of these chains has been limited to repetition, synonymy, hyponymy, and collocates. The cases of automatic extraction of lexical chains have found that the contextual synonyms can not be recognized, nor extracted automatically. This study took the data-based technology to extract the contextually co-occurring lexical chains through thematic lexical items. It found that these contextually co-occurring lexical chains can include the semantic lexical chains and contextual synonyms. It also found that, in extraction of collocates of the co-occurring lexical items, these collocates form secondary lexical chains, which contribute to textual cohesion. The vertical lexical chains made of contextually co-occurring lexical items and the horizontal chains made of collocational lexical items work together in making the text into a coherent whole.
语义词汇链被认为是语篇衔接的重要手段，但是传统上对其的分类局限在重复、同义词、上下义词和搭配等方面。在据此进行的词汇链自动提取的案例中，发现语境同义词没有得到承认，更无法进行自动提取。在此基础上，本项研究采取以数据为基础的计算技术，提取主题词汇的语境共现词汇链，发现其完全可以涵盖语义词汇链和语境同义词，并且在提取共现词汇的搭配词汇时，发现这些搭配词汇实际上形成二级词汇链参与语篇的衔接。如此语境共现词汇构成的纵向词汇链和搭配词汇构成的横向词汇链，使得语篇成为连贯的整体。
© 2011 Foreign Language Teaching and Research Press Co. Ltd., Walter de Gruyter GmbH & Co. KG, Berlin/Boston and Cultural and Education Section British Embassy
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Artikel in diesem Heft
- Automatic Extraction of Contextual Co-occurrence Chain and Its Relationship with Textual Cohesion
- Relative Clauses in Hong Kong English: A Corpus-based Perspective
- Can EFL Interactive Listening Be Validly Assessed?
- Chinese College Students' Abilities and Attitudes for Peer Review
- Research on Improving Rating Reliability for School-based Oral English Achievement Tests: The Design and Development of a Computer-aided Rating System
- Comparison Between the Students' Perceived and Expected Behavior of College English Teachers
- Empirical Studies on L2 Communication Strategies over Four Decades: Looking Back and Ahead
- Scaffolding in the Second Language Learning of Target Forms in Peer Interaction
- Chinese Abstracts
