摘要:
采用逻辑回归、随机森林等算法通过学习用户前四个月(04.15~08.15)的用户行为预测用户第五个月(08.15~09.15)将会购买的品牌。评价方式按照F1排名,F1=2×P×R/(P+R)其中,P是准确率为命中的数量除以用户的预测数,R是召回率为命中的数量除以真实的购买数。 阅读全文
posted @ 2014-08-21 16:03
SONGHY
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In data mining there are four main problems, clustering, classifying, regression and dimension reduce, to be discussed. And this issue is mainly about Decision Tree in classification. For some data that we’ve known, calculate the decision tree, and use the tree to deal with new points, telling which group the new, coming points belong to. 阅读全文