數(shù)據(jù)挖掘復(fù)習(xí)題和答案(編輯修改稿)
2025-07-16 23:13 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 = 0|+) = 4/5 = ,P(C = 0|+) = 3/5 = .2.3. P(A = 0|+) = (2 + 2)/(5 + 4) = 4/9,P(A = 0|?) = (3+2)/(5 + 4) = 5/9,P(B = 1|+) = (1 + 2)/(5 + 4) = 3/9,P(B = 1|?) = (2+2)/(5 + 4) = 4/9,P(C = 0|+) = (3 + 2)/(5 + 4) = 5/9,P(C = 0|?) = (0+2)/(5 + 4) = 2/9.4. Let P(A = 0,B = 1, C = 0) = K5. 當(dāng)?shù)臈l件概率之一是零，則估計(jì)為使用m估計(jì)概率的方法的條件概率是更好的，因?yàn)槲覀儾幌Ｍ麄€(gè)表達(dá)式變?yōu)榱恪?. P(A = 1|+) = , P(B = 1|+) = , P(C = 1|+) = , P(A =1|?) = , P(B = 1|?) = , and P(C = 1|?) = 2.Let R : (A = 1,B = 1, C = 1) be the test record. To determine itsclass, we need to pute P(+|R) and P(?|R). Using Bayes th
環(huán)評(píng)公示相關(guān)推薦
鄂ICP備17016276號(hào)-1