| Abstract | 第1-5页 |
| 摘要 | 第5-14页 |
| Chapter One Introduction | 第14-21页 |
| Chapter Two Literature Review | 第21-70页 |
| ·Main Automated Essay Scoring (AES) systems | 第21-33页 |
| ·PEG-evolution, procedure, performance | 第21-23页 |
| ·E-rater-evolution, procedure, performance | 第23-25页 |
| ·IEA-evolution,procedure, performance | 第25-30页 |
| ·IntelliMetric-evolution, procedure, performance | 第30-32页 |
| ·TCT/BETSY-evolution, procedure, performance | 第32-33页 |
| ·The pros and cons of AES | 第33-43页 |
| ·AES generalizations | 第33-37页 |
| ·The Merits of AES systems | 第37-39页 |
| ·The Disadvantages of AES systems | 第39-43页 |
| ·Introducing Latent Semantic Analysis (LSA) | 第43-65页 |
| ·A technique for processing text | 第44-52页 |
| ·A theory of verbal meaning | 第52-56页 |
| ·A new approach to cognitive science | 第56-59页 |
| ·The pros and cons of LSA | 第59-65页 |
| ·Applying LSA to AES in the Chinese EFL context | 第65-70页 |
| Chapter Three Research Methodology | 第70-100页 |
| ·Methods and procedures | 第70-80页 |
| ·CET-4/6 writing test in the Chinese EFL context | 第70-72页 |
| ·The Necessity of AES studies in the Chinese EFL context | 第72-74页 |
| ·Population and sample | 第74-75页 |
| ·Restating the research problem | 第75-76页 |
| ·Hypothesis and prediction | 第76-77页 |
| ·Methods of investigation | 第77-80页 |
| ·System design considerations | 第80-99页 |
| ·Proposed LSA-based AES investigations | 第81-82页 |
| ·Structure of LSA-based EFL Essay Scorer (LEES) | 第82-91页 |
| ·Matrix representation | 第83-85页 |
| ·Matrix transformation | 第85-87页 |
| ·Matrix decomposition | 第87页 |
| ·Dimension reduction | 第87-88页 |
| ·Matrix reconstruction | 第88页 |
| ·Insider scoring method | 第88-89页 |
| ·Outsider scoring method | 第89-91页 |
| ·Flowchart of the LEES system | 第91-98页 |
| ·Test of the LEES system | 第98-99页 |
| ·Chapter summary | 第99-100页 |
| Chapter Four Results | 第100-126页 |
| ·Features of the LEES system | 第100-107页 |
| ·Implementation of the LEES system | 第107-118页 |
| ·Implementation of the training stage | 第108-113页 |
| ·Implementation of the scoring stage | 第113-118页 |
| ·Relationships among scores | 第118-125页 |
| ·Results with 1~(st) log-entropy weighting scheme | 第118-122页 |
| ·Summary of results with three weighting schemes | 第122-125页 |
| ·Chapter summary | 第125-126页 |
| Chapter Five Discussion and Conclusions | 第126-148页 |
| ·Overview of this study | 第126-131页 |
| ·Discussion | 第131-145页 |
| ·Limitations of this study | 第132-140页 |
| ·Drawbacks of the LEES system | 第132-134页 |
| ·Inadequate considerations for writing assessment #specific to the Chinese EFL context | 第134-138页 |
| ·Insufficient attention to LSA's inherent limitations.. | 第138-140页 |
| ·Applications in LSA research and AES studies | 第140-141页 |
| ·Implications for future work | 第141-145页 |
| ·Conclusions | 第145-148页 |
| References | 第148-158页 |
| Appendix A SVD program in MS Visual C++.NET Ver. 2003 | 第158-164页 |
| Appendix B Essay texts on "My View on Fake Commodities" of "fake0821.txt" and its ten most similar essays by cosine values | 第164-168页 |
| Appendix C A complete list of scores by LEES for the prompt "My View on Fake Commodities" | 第168-173页 |
| Acknowledgments | 第173-175页 |
