Research On The Decision Tree Applied In The Employment Data Of Undergraduate Student

Along with the rapid development of information technology. People obtain data means andpath more and more the kind turn，appeared a data scoop out，it withdraw to dig out from a greatdeal of data can not detection，hide but useful information and the process of knowledge.Connection analysis，classification，deviation analysis，gather a type analysis，cycle time modeand estimate etc. All of these is the main mission that the data scoop out..Now have a lot ofmethod to used for data classification，among them in common use of main have decision tree，rough gather，k—most close by method，artificial nerve network，statistics model etc. method，but decision tree calculate way is classification calculate way in the most in general use of1kind，it have quicker of calculation speed，people easy comprehension，so drive extensiveapplication in finance，medical treatment，insurance，conveyance，weather，national defenseetc. realm，but at university graduate student employment aspect application less.China education reform at continuously of thorough with expansion，the universityundergraduate course living to solicit students scale also at year by year extension，enrollment ofsignificant increment，give the university graduate student of employment brought more andmore big of pressure，especially the layer be lower of application type the employment of theundergraduate course college antinomy Be getting more outstanding，along with these present ofnew characteristics，the calculator be information-based management also at employment workof open an exhibition with perfect top display more and more importance of function，but usagedata scoop out technique，then can find out employment medium of some latent regulation，forhave never find out work or future seek work of the student provide some draw lessons from，also for university at employment management the aspect provide help!Under this background，the concept and development of data mining were introduced indetail in this paper，discusses the applied undergraduate studies the characteristics of theemployment of college graduates data，on the basis of the principle of data mining. Specificresearch content as follows:(1) The paper discusses data mining based on the general theory of data mining，introducesdecision tree algorithms in detail. And simply introduces several common decision-making treegeneration algorithms. This passage mainly introduces C4.5algorithm process and its structure，and analyzes the advantages and disadvantages of C4.5algorithm. (2) On the base of a college graduation data，this passage emphatically discussed using C4.5algorithm applied on undergraduate colleges establish the mining model，and employment tovalidate the model is correct and practical.The paper finally summarized and prospects for the development of the study on the basisof summing up the all passage，pointed out the influence of the decision attribute，so it cansupport college and university leaders in improving employment，improving employment levelsand improve the training mechanism of now provide decision.