Research And Development In Table Exercise Of Distance Exercise System

The exercise is a important teaching process. The exercise correcting can supervise, encourage and spur on students to study, and can check the teaching effect, improve the teaching quality. Make use of a computer to carry out the automation recognition and correction on exercise is faster then the man's correction of exercise, and ease the teacher's workload. At present, there are many exercise correcting software, they can only recognize and correct choosing problem and filling problem, the software at present is not able to recognize and correcting the table problem in exercise. In many subject, include some knowledge which have to be inscribe by table, such as engineering survey, accountancy theory, laboratory report in science and engineering course.The answer of table problem in exercise is a important element, it is composed of content and position information. The thesis studies the extraction of answer content, and confirm the position information of answer. One keystone is how to acquire the position information of answer, how to acquire the position information of cell. For this purpose, we bring forward one kind of cell coding algorithm that can apply in any table. Trough using the cell coding algorithm, gained the number of cells, the number of cell denote the position information of answer. The number of cell and content compose the answer.Bring forward a recognition control model of the automation correction in table exercise. Divide the recognition type of answer into 4 kinds, include the matching, inclusion, range and relevance, the matching and inclusion type is for the answer which content is text, the range and relevance is for the answer which content is figure. Bring forward different recognition algorithm for every kind recognition types. According the sequence that recognize the answer of matching, inclusion, range recognition type first, at last recognize the answer of relevance recognition type. Refer to right answer, according this recognition sequence, according to the recognition algorithm to different recognition type, recognition the student's answer.