简论本科生课程论文

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1、简论本科生课程论文简论本科生课程论文导读：本科生课程论文---文献综述题姓学学专年教目：名：号：院：业：级：师：软件测试方法综述苏辉河221000321软件学院软件工程2010王灿辉2014年05月18日软件测试方法综述摘要：(黑体四号、20磅，加粗)文本分类(textcategorization，简称TC)技术是信息检索和文本挖掘的重要基础，其主要任务是在预先给定的类别标记(label)集合下，根据文本内容判定它的类别。神经X络算法具有很强的鲁棒性和容错性，善于联想、概括、类比和推广，把神经X络算法引

2、入文本分类可以提高分类的准确性。BP神经X络是最常用的神经X络算法之一，它具有理论依据坚实，推导过程严谨，物理概念清晰及通用性好等优点，但其具有收敛速度慢，可能出现局部极小值等问题。本文打算从BP算法缺点着手，改进BP算法，并把它应用于文本分类，来提高分类准确性。(宋体小四号、20磅)关键词：(黑体四号、20磅，加粗)文本分类，神经X络，BP算法(黑体小四号、20磅)1文本预处理(黑体三号、20磅，段前、段后18磅)(宋体小四号、20磅)中中中中中中中，中中中中中中中中中，中中中中中中中中中中中中中。中

3、中中中中中中中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中。中VSM中中中中中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中。中中中中中中中中中：中中中中(DF)，中中中中(IG)，中中中中中中中中中(MI)，中中中V2中中(CHI)中中中中中中中中中(CE)中，中中[3]中中中中中中中中中中中。中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中

4、。YimingYang中中中[5]中中中，中IG中CHI中中中中中中中中中中中中中中中中中中中中中，DF中中中中中中中中中中中中。中中[7]中中中中中中中中中中中表中中中中中中中中中中(IG，MI中CHI)中中中中中中中中中中中中中中中中中中中。中中中中中中中中中中，中中中中中中中中中中中中。中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中中中中中中中中。中中中中中中，中中中中中中中中中中中中中中中5中中25中中中中中，中中中中中中中中中中中中中中中中中中，中中中中中中中。中中中中中中

5、中中中中中中，中中中中中中中中中中中中中中中中中。中中中中中中中中中IG，CHI中MI中中中中中中，中中中中中中中中中中中，中中中中中中中中中中中中中中中中，中中中中中中中中中中中中。中中中中中[1]中，中56简论本科生课程论文(2)导读：中中中IG+PCA中中中中中中中中中中，中中中中中中中，中中中中中中中中中中中中中中中中中中中，中中中中中中中中中中表中中中，中中中中中中中中中中中DF中中中中中中中中，中中中中中中中中中中中中中。1(宋体五号，居中)2神经X络中中中中中中中，中中中中中中中中中，中中

6、中中中中中中中中中中中。中中中中中中中中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中。中VSM中中中中中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中。中中中中中中中中中：中中中中(DF)，中中中中(IG)，中中中中中中中中中(MI)，中中中V2中中(CHI)中中中中中中中中中(CE)中，中中中中中中中中中中中中中。中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中中中中中中，中中中中中中中

7、中中中中中中中中中中。YimingYang中中中中中中，中IG中CHI中中中中中中中中中中中中中中中中中中中中中，DF中中中中中中中中中中中中。表2-1中中中中中中中中(宋体五号、20磅，居中)中中中中中中中中中中中中中表中中中中中中中中中中(IG，MI中CHI)中中中中中中中中中中中中中中中中中中中。中中中中中中中中中中，中中中中中中中中中中中中。中中中中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中中中中中中中中。中中中中中中，中中中中中中中中中中中中中中中5中中25中中中中中，中中中中

8、中中中中中中中中中中中中中中，中中中中中中中。中中中中中中中中中中中中，中中中中中中中中中中中中中中中中中。中中中中中中中中中IG，CHI中MI中中中中中中，中中中中中中中中中中中，中中中中中中中中中中中中中中中中，中中中中中中中中中中中中。中中中中中中，中中中中IG+PCA中中中中中中中中中中，中中中中中中中，中中中中中中中中中中中中中中中中中中中，中中中中中中中中中中表中中中，中中中中中中中中中中中DF中中中中中中中中，中中中中中中中中