Based On The Subjective Questions In Chinese Automatic Correcting Technology Of Research And System Implementation

Assessment technology of subjective tests based on Chinese is one of the core problems in Natural Language Understanding. In massive online examinations, the automatic marking technology of objective questions has been very mature. But to the subjective questions, such as short answer questions、essay questions and writing etc, have no single answer. To be restricted by the Chinese language’s features and the development of the techniques in some relative area, such as the Artificial Intelligence area, the Pattern Recognition area and the Natural Language Understanding area, the questions’auto-assess techniques are difficult to implement. To a certain extent, this important factor caused no practical online examinations, which constrains the development of the network teaching. Therefore, the study of how the automated assessment technology of subjective tests based on Chinese that has great practical significance.Based on the understanding of the characteristics of Chinese, this paper simulates in manual process, computer automated assessment technology should take on Chinese automatic word segmentation, knowledge denotation, syntax analysis, semantic similarity, to realize that Subjective Question Auto-assess. Analysis of the process of using rule-based and corpus based statistical methods, improvements on Chinese syntax parsing have given by adopting methods of both bottom up and top down, the non-linear function and the "double comparing method" to calculate the term weighting. In terms of semantic similarity, with the abundant semantic information supplied by How Net, it calculates the sentence similarity with weighted semantic similarity based on Chinese words semantic similarity. Then we can get the final scores depend on the value of similarity.According to the above idea, the paper designs a Subjective Question Auto-assess system and implements the main functions. Running through the system to verify the system has practicality and expansibility, will help to achieve control of test’s fairness and efficiency, improve the design of the general online examination system, the implementation of the education informationization.