Research On Generation Technology Of Self-adaptive Training Exercises For Elementary School Chinese

Chinese course is one of the most important courses in the current curriculum system of primary and secondary schools,and it is also the foundation of learning other courses.Vocabulary and sentences are the foundation of Chinese course,so proper exercises are the essential to learn Chinese.However,the process of preparing test questions is time-consuming and laborious.So,it is necessary to study the adaptive technique for generating exercises.The main work of this paper is as follows:(1)In order to meet the demands of synchronous training and textbook version upgrade,this paper studies the automatic construction of corpus based on crawler technology;(2)The objective questions automatic generation and grading technology is designed;(3)The scoring technology of the subjective questions is discussed: the grammar of students' answers was evaluated by sentence simplification,the rhetorical elements of students' answers were evaluated by sentence development,and the rationality of the answers was evaluated by comparison with the reference answers;(4)the sentence simplification and the sentence development scoring algorithm are proposed for judging the similarities between the user's answers and the reference answers.The sentence simplification scoring algorithm is based on the lack of trunk words and the residual of branch words.The sentence development scoring algorithm is based on the similarities between the students' answer and the sentences in the database;(5)The algorithm will automatically adjust the quantity of exercises according to the historical accuracy and The Ebbinghaus Forgetting Curve.It has been partially verified by Delphi assessment and small-scale testing that the adaptive technique for generating exercises has the following functions:(1)The database can be updated automatically to adjust to revision of Chinese textbooks(2)It supports the generation and grading of common Chinese exercises in primary schools;(3)It can dynamically update the question items and options,so as to avoid repeated generation of exercises;(4)It can dynamically control the quantity of exercises based on the students' situation.In the future,we will improve the scoring technology of subjective questions,such as composition and reading,and develop systems to realize the adaptive intelligent learning technology for Chinese in primary schools.