CAJ | 학술논문

C4．5算法是决策树学习的核心算法，与 ID3算法相比，C4．5算法是 ID3算法的改进，并继承了 ID3算法的全部优点，文章给出了决策树构造思想和 C4．5决策树学习算法，并将其应用于多媒体网络教学评价之中，采用 C4．5决策树算法对教学评价数据进行预处理，选取决策属性，实现挖掘算法并抽取规则知识，C4．5算法能够更好地修正 ID3的剪枝算法，并将多媒体网络教学评价进行分类，算法简单且生成速度快，通过生成的决策树，生成可理解的规则．
C4．5산법시결책수학습적핵심산법，여 ID3산법상비，C4．5산법시 ID3산법적개진，병계승료 ID3산법적전부우점，문장급출료결책수구조사상화 C4．5결책수학습산법，병장기응용우다매체망락교학평개지중，채용 C4．5결책수산법대교학평개수거진행예처리，선취결책속성，실현알굴산법병추취규칙지식，C4．5산법능구경호지수정 ID3적전지산법，병장다매체망락교학평개진행분류，산법간단차생성속도쾌，통과생성적결책수，생성가리해적규칙．
T he C4 .5 algorithm is the decision tree study core algorithm .Compared with ID3 algorithm ,C4 .5 algorithm is an improved ID3 algorithm ,and it inherited the entire ID3 algorithm's merit .T his article has given the decision tree structure thought and the C4 .5 decision tree study algorithm ,and applies it during the multimedia network teaching appraisal .T he paper uses the C4 .5 decision tree algorithm to preprocess the data and chooses the decision attributes first ,then draw s the rules ,w hich shows that w hat attributes determine the classification of the multimedia network teaching appraisal .T he results of data mining indicate that the algorithm can classify the teaching appraisal data properly and get some valuable information for decision making .