probability n. 1.或有;或然性。 2.【哲学】盖然性〔在 certainly 和 doubt 或 posibility 之间〕。 3.【数学】几率,概率,或然率。 4.或有的事;可能的结果。 5.〔pl.〕〔美俚〕天气预测。 What are the probabilities 有几分把握? The probabilities are against us [in our favour]. 趋势对我们好像不利[有利]。 hit probability 命中率。 in all probability 很可能,大概,多半,十之八九。 probability of (missile survival) (飞弹不被击落的)概率。 The probability is that ... 大概是…,很可能是…。 There is every probability of [that] ... 多半有,多半会。 There is no probability of [that] ... 很难有,很难会。
tree n. 特里〔姓氏〕。 n. 1.树〔主要指乔木,也可指较大的灌木〕。 ★玫瑰可以称为 bush, 也可以称为 tree. 2.木料,木材;木构件;〔古语〕绞首台;〔the tree〕(钉死耶稣的)十字架;鞋楦。 3.树形(物),世系图,家系 (=family tree);【数学】树(形);【化学】树状晶体。 a banana tree 香蕉树。 an axle-tree 心棒,轴料。 a boot-tree 靴楦[型]。 a saddle-tree 鞍架。 at the top of the tree 在最高地位。 tree of Buddha 菩提树。 tree of heaven 臭椿。 tree of knowledge (of good and evil) 【圣经】知道善恶的树,智慧之树。 tree of life 生命之树,生命力的源泉【植物;植物学】金钟柏。 up a tree 〔口语〕进退两难,不知所措。 vt. 赶(猎兽等)上树躲避;〔口语〕使处于困境;穷追;把鞋型插入(鞋内)。
It ' s a pity that although there are many papers and articles focused on data mining published every year , most of them deal with data mining concept and abstract algorithm theory , it is hardly to see their real implementation and application , in this context , when i was in my graduate exercitation in a company in beijing , which focus on developing supermarket software , i joined and completed an olap ( online analytical processing ) project , merchandise analysis and sale report system , which based on microsoft analysis service and microsoft sql server . i also design and implement three important algorithms : merchandise association rule algorithm based on multi - level merchandise category , supermarket member customer shopping frequent sequence generating algorithm , customer classification ( decision tree ) algorithm which based on information entropy and conditional probability tree , and they all achieve expected result 本文作者在实习期间,参与并完成了基于微软分析服务器的销售分析与报表系统;并在公司即将开始的数据挖掘项目中,完成了多个重要算法的设计和c + +程序实现:基于多层分类商品树的商品关联规则算法,会员顾客的购物频繁序列模式产生算法;基于信息熵理论和条件概率树的会员顾客分类(决策树)算法,并分别使用数据进行了测试,取得了较好的结果。