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《中国学生英语作文自动评分模型的构建》旨在构建中国学生英语作文自动评分的统计模型，探讨学生英语作文中的多种文本特征项对学生作文成绩的预测能力。通过模型构建和模型验证表明机器评分的信度达到甚至超过人工评分的信度，该模型对中国学生英语作文质量的解释能力可以与国外应用于母语作文自动评分的软件系统对母语作文质量的解释能力相媲美。

List of Abbreviations

List of Tables

List of Figures

Part One Introduction

Introducing the Study

0.1 Introductory remarks

0.2 Need for this study

0.2.1 Theoretical considerations

0.2.2 Practical considerations

0.3 Deion of the study

0.4 Organization of the study

0.5 Summary

Part Two Literature Review

Chapter 1 A Review of Existing Computer-Assisted Essay Scoring Systems

1.1 Introduction

1.2 Key concepts

1.2.1 Computer-assisted essay scoring

1.2.2 EFL writing assessment

1.3 Existing computer-assisted essay scoring systems

1.3.1 Project Essay Grade （PEG）： A form-focused system

1.3.2 Intelligent Essay Assessor （IEA）： A content-focused system

1.3.3 E-rater： A hybrid system with a modular structure

1.3.4 An appraisal of the three existing systems

1.4 Lessons from existing essay scoring systems

1.5 Summary

Chapter 2 Studies on Measures of Writing Quality

2.1 Introduction

2.2 Measures of writing quality in the literature

2.2.1 Measures of the quality of language

2.2.2 Measures of the quality of content and organization

2.3 An overview of the measures in the literature

2.4 A conceptual model for the computer-assisted scoring of EFL essays

2.5 Proposed measures of EFL writing quality

2.5.1 Proposed measures of the quality of language in EFL writing

2.5.2 Proposed measures of the quality of content in EFL writing

2.5.3 Proposed measures of the quality of organization in EFL writing

2.6 Summary

Part Three Methodology

Chapter 3 Research Questions and Data Preparation

3.1 Introduction

3.2 Research questions

3.3 The corpus

3.4 The rating scheme

3.4.1 Selecting a rating scale

3.4.2 The revised rating scale

3.4.3 The evaluation of content

3.4.4 The weighting scheme

3.5 Rating

3.5.1 Rater selection

3.5.2 Rater training

3.5.3 The rating sessions

3.6 Score reliability

3.7 Summary

Chapter 4 Text Analysis and Statistical Analysis

4.1 Introduction

4.2 Tools

4.3 Essay feature extraction

4.3.1 Language features

4.3.2 Content features

4.3.3 Organizational features

4.4 Data analysis

4.4.1 Correlation analysis

4.4.2 Multiple regression analysis

4.4.3 Stages of data analysis

4.5 Summary

Part Four Results and Discussion

Chapter 5 Identifying Predictors of EFL Writing Quality

5.1 Introduction

5.2 Linguistic features and writing quality

5.2.1 Fluency and writing quality

5.2.2 Complexity of language and writing quality

5.2.3 Measures of linguistic idiomaticity and appropriateness

5.3 Results of content analysis

5.3.1 Results of Latent Semantic Analysis

5.3.2 Procedural vocabulary and essay score

5.4 Essay organization and writing quality

5.4.1 Paragraphing and writing quality

5.4.2 Discourse conjuncts and writing quality

5.4.3 Demonstratives， pronouns， connective and writing quality

5.5 Power of the predictors proposed in this study

5.6 Summary

Chapter 6 A Statistical Model for Computer-Assisted Essay Scoring

6.1 Introduction

6.2 Diagnosing the preliminary model

6.3 The refined model

6.4 Predictors and aspects of writing quality measured

6.4.1 Predictors in the language module

6.4.2 Predictors in the content module

6.4.3 Predictors inthe organization module

6.4.4 Interdependence of the modules

6.5 Implementing the model

6.6 Summary

Chapter 7 Validating the Model

7.1 Introduction

7.2 Cross-validating the model

7.3 Reliability of computer scores in cross-validation

7.3.1 Aspects of reliability

7.3.2 Consistency estimates

7.3.3 Consensus estimates

7.4 Double cross-validation

7.4.1 Constructing the model

7.4.2 Model statistics and estimated equation

7.5 Reliability of computer scores in double cross-validation

7.6 Comparison with existing essay scoring systems

7.6.1 Comparison with PEG

7.6.2 Comparison with IEA

7.6.3 Comparison with E-rater

7.7 Summary

Part Five Conclusion

Chapter 8 Conclusion

8.1 Major findings

8.1.1 A model for the computer-assisted scoring of EFL essays

8.1.2 Predictors of EFL writing quality

8.2 Limitations of the study

8.3 Future work

References

Appendices

Appendix Ⅰ PEGs proxes and their beta values （Page 1968）

Appendix Ⅱ Pages （1995） model and variables

Appendix Ⅲ Argument weight

Appendix Ⅳ Examples of good openings and endings

Appendix Ⅴ Scoring table （Organization & Content）

Appendix Ⅵ Scoring table （Language）

Appendix Ⅶ List of stopwords

Appendix Ⅷ Lemma list （excerpt）

Appendix Ⅸ List of content words

Appendix Ⅹ Sample essays

Appendix Ⅺ POS-tagged samples

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书籍介绍

《中国学生英语作文自动评分模型的构建》旨在构建中国学生英语作文自动评分的统计模型，探讨学生英语作文中的多种文本特征项对学生作文成绩的预测能力。通过模型构建和模型验证表明机器评分的信度达到甚至超过人工评分的信度，该模型对中国学生英语作文质量的解释能力可以与国外应用于母语作文自动评分的软件系统对母语作文质量的解释能力相媲美。