本文在将用户对 Web 站点访问行为表示成用户访问事务基础上,给出有关兴趣度、相似度、聚类中心定义,提出基于 ISODATA 算法的路径聚类方法,并对实际网站 Web 日志文件进行实验,结果表明该方法不但能够发现群体用户访问模式,而且还得到...本文在将用户对 Web 站点访问行为表示成用户访问事务基础上,给出有关兴趣度、相似度、聚类中心定义,提出基于 ISODATA 算法的路径聚类方法,并对实际网站 Web 日志文件进行实验,结果表明该方法不但能够发现群体用户访问模式,而且还得到较为合理的模式聚类个数。展开更多
To avoid the complexity of building mechanistic models by studying the inner nature of the object, a systematic method based on statistical pattern recognition is developed in order to estimate the product quality on-...To avoid the complexity of building mechanistic models by studying the inner nature of the object, a systematic method based on statistical pattern recognition is developed in order to estimate the product quality on-line. The mapping relationship between a feature space and a product quality space can be built by using regression analysis, and in applying clustering analysis the product quality space can be partitioned automatically. Eventually, estimating product quality on-line can be accomplished by sorting the mapped data in the partitioned quality space. A concrete problem is proposed which has a relatively small ratio of training data to input variables. By implementing the method mentioned above, a satisfying result has been achieved. Furthermore, the further question about choosing suitable mapping methods is briefly discussed.展开更多
文摘To avoid the complexity of building mechanistic models by studying the inner nature of the object, a systematic method based on statistical pattern recognition is developed in order to estimate the product quality on-line. The mapping relationship between a feature space and a product quality space can be built by using regression analysis, and in applying clustering analysis the product quality space can be partitioned automatically. Eventually, estimating product quality on-line can be accomplished by sorting the mapped data in the partitioned quality space. A concrete problem is proposed which has a relatively small ratio of training data to input variables. By implementing the method mentioned above, a satisfying result has been achieved. Furthermore, the further question about choosing suitable mapping methods is briefly discussed.
