例句與造句

1. This part put forward the system conception of kdd and the apriori algorithm . then evolved the create - frequent - set algorithm which was fit for the freight agent management system . because of the shortage of efficiency , 1 improved the algorithm . because some of the items were not boolean variables , 1 need the quantitaitve attributes association rules discovering algorithm . in general , there had the levels among the items , so multilevel association rules existed . after perfecting the algorithmic need interpret and evaluate the knowledge . in the end , 1 discussed the privacy and security of kdd . the fifth part described the future problems and prospect
   第四章是論文的主體，著重介紹知識發(fā)現(xiàn)的全過程，按照semma方法論首先進(jìn)行數(shù)據(jù)準(zhǔn)備，然后進(jìn)入數(shù)據(jù)挖掘階段，提出知識發(fā)現(xiàn)的概念體系和公認(rèn)的apriori算法，從該算法演變出適合于貨代管理系統(tǒng)的生成頻繁項目集的算法；因為在實際應(yīng)用中存在效率上的不足，因此進(jìn)一步地提出了改進(jìn)方案；在事務(wù)處理中各個項目并不都是布爾型變量，因此需要特定的針對多值屬性的關(guān)聯(lián)規(guī)則發(fā)現(xiàn)算法；通常情況下，項目之間存在有層次關(guān)系，因此多層次關(guān)聯(lián)規(guī)則的發(fā)現(xiàn)普遍存在；算法完善并運行后需要對發(fā)現(xiàn)的知識進(jìn)行解釋和評估；本章的最后討論了知識發(fā)現(xiàn)的私有性和安全性問題；第五章講述有待解決的問題和發(fā)展前景。
2. It's difficult to find attribute association in a sentence. 用attribute association造句挺難的