This essay first gives a brief introduction to AES systems and the main approaches employed by AES,then talks about AES'limitations and recent development,and finally discusses the pros and cons on it.By reviewing...This essay first gives a brief introduction to AES systems and the main approaches employed by AES,then talks about AES'limitations and recent development,and finally discusses the pros and cons on it.By reviewing previous literature,this paper intends to provide a brief picture of AES systems for Chinese researchers,in the hope that they will learn from foreign examples and succeed in building a valid AES system for learners at home.展开更多
The result of a web-based writing assessment shows inconsistent dispersion of means across different test topics. 101 samples from 404 submitted essays are analyzed for fluency, lexical and syntactic complexity. The s...The result of a web-based writing assessment shows inconsistent dispersion of means across different test topics. 101 samples from 404 submitted essays are analyzed for fluency, lexical and syntactic complexity. The study suggests that topics of different discourse modes affect test candidates' language output in both fluency and complexity.展开更多
文摘This essay first gives a brief introduction to AES systems and the main approaches employed by AES,then talks about AES'limitations and recent development,and finally discusses the pros and cons on it.By reviewing previous literature,this paper intends to provide a brief picture of AES systems for Chinese researchers,in the hope that they will learn from foreign examples and succeed in building a valid AES system for learners at home.
文摘The result of a web-based writing assessment shows inconsistent dispersion of means across different test topics. 101 samples from 404 submitted essays are analyzed for fluency, lexical and syntactic complexity. The study suggests that topics of different discourse modes affect test candidates' language output in both fluency and complexity.