| 摘要 | 第5-6页 |
| Abstract | 第6-7页 |
| Abbreviations | 第11-14页 |
| Chapter 1 Introduction | 第14-20页 |
| 1.1 Research background | 第14-15页 |
| 1.2 Research Objectives | 第15-16页 |
| 1.3 Rationale and significance of the present study | 第16-17页 |
| 1.4 Outline of the thesis | 第17-20页 |
| Chapter 2 Literature Review | 第20-30页 |
| 2.1 Previous studies on context | 第20-22页 |
| 2.2 Previous studies on English modality | 第22-25页 |
| 2.2.1 Studies on English modality home and abroad | 第22-24页 |
| 2.2.2 Studies on mergers of English modal verbs | 第24-25页 |
| 2.3 Studies on word sense disambiguation | 第25-27页 |
| 2.4 Studies on application of Formal Concept Analysis to linguistic research | 第27-28页 |
| 2.5 Space for the current study | 第28-30页 |
| Chapter 3 Theoretical Foundation and Data Collection | 第30-38页 |
| 3.1 Theoretical foundation of the present study | 第30-33页 |
| 3.1.1 Formal Concept Analysis theory | 第30-32页 |
| 3.1.2 Structural partial-ordered attribute diagram | 第32-33页 |
| 3.2 Methodology of Research | 第33-34页 |
| 3.3 Data collection and software used in this study | 第34-37页 |
| 3.4 Summary | 第37-38页 |
| Chapter 4 Semantic Categorization of English Modal Verb May | 第38-46页 |
| 4.1 Reasons for the selection of may | 第38-40页 |
| 4.2 Semantic categorization of English modal verb may | 第40-44页 |
| 4.2.1 Root possibility meaning | 第41-42页 |
| 4.2.2 Epistemic possibility meaning | 第42-43页 |
| 4.2.3 Merger of English modal verb may | 第43-44页 |
| 4.3 Summary | 第44-46页 |
| Chapter 5 Construction of WSD Model by Formal Concept Analysis | 第46-74页 |
| 5.1 General description of construction of the WSD model | 第46-48页 |
| 5.2 Manual Tagging of Corpus | 第48-50页 |
| 5.3 Construction of the object set for the WSD model | 第50-51页 |
| 5.4 Construction of formal context | 第51-67页 |
| 5.4.1 Basic notions about feature selection from the context | 第52-54页 |
| 5.4.2 Calculation of mutual information | 第54-58页 |
| 5.4.3 Selecting syntactic features from the context | 第58-61页 |
| 5.4.4 Vectorization of linguistic features | 第61-67页 |
| 5.5 Word sense disambiguation of English modal verb may | 第67-68页 |
| 5.6 Leave-one-out cross validation and five-fold cross validation | 第68-69页 |
| 5.7 Rule extraction | 第69-71页 |
| 5.8 Summary | 第71-74页 |
| Chapter 6 Analysis of Attribute Features of Semantic Merger of May | 第74-86页 |
| 6.1 Introduction of attribute features | 第74-75页 |
| 6.2 Analysis of attribute features of English modal verb may | 第75-82页 |
| 6.2.1 Attribute features of root possibility may | 第78-79页 |
| 6.2.2 Attribute features of epistemic possibility may | 第79-80页 |
| 6.2.3 Attribute features of semantic merger may | 第80-82页 |
| 6.3 Analysis of the contextual features for semantic merger of may | 第82-83页 |
| 6.4 Influential factors for WSD model | 第83-84页 |
| 6.5 Summary | 第84-86页 |
| Chapter 7 Conclusion | 第86-90页 |
| 7.1 Major findings of the study | 第86-88页 |
| 7.2 Implications of the study | 第88页 |
| 7.3 Limitations and suggestions for further study | 第88-90页 |
| References | 第90-96页 |
| Appendix I | 第96-102页 |
| Appendix II | 第102-108页 |
| Appendix III | 第108-114页 |
| Appendix IV | 第114-120页 |
| Acknowledgements | 第120页 |
