Research Of Distinguish Measure Of Similar Test Questions Towards Language C Subject Library

According to conventional education mode ,teachers give students aspectant teaching ,practice and examination. Practice and examination adopt the manner of handcraft, it usually get a low efficiency and have a bad effect on the flexibility of subject selecting in the examination paper. Along with the development of computer and network technology, some practice and examination which use no paper and select subjects by random are more and more used in remote education system and all kinds of computer examinations , such applications are realized by electron subject library.Generally in electron subject library, a mass of test questions are recorded by hand .Once a subject is recorded , it can be used for a long term. But with the continual complementarity of the subjects ,there must be a lot of repeat or similar ones which can't be filtered and wiped off by hand .Therefore, how to wipe off the repeat or similar subjects in electron subject library in effect is a important question of saving resource and enhancing the quality of the examination paper.To supply the gap of repetition and waste in electron subject library, basing on the language C subject library, this dissertation present a method of throwing off the repeat subjects by the similarity model of sentences. On the foundation of pretreatment of language C subject, analyzing three existing similarity model and designing the similarity model of language C subject; through the introduction of hownet's structure and administrative levels and primitive's similarity method, achieving semantic similarity method of words based on hownet, than advancing semantic similar as hownet to solve the similarity of domain words which are not embodied in hownet ; ulteriorly, through researching existing sentence similarity model and combining it with idiographic subjects ,achieving the senntence similarity model towards language C subject library; finally telling of the similarity model arithmetic's application in language C subject library, then analyzing and estimating the effect of it in order to advance the shortage and expanding direction.