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fix apriori algorithm aprioriGen #15

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fix apriori algorithm aprioriGen #15

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4 changes: 2 additions & 2 deletions Ch11/apriori.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,8 +41,8 @@ def aprioriGen(Lk, k): #creates Ck
lenLk = len(Lk)
for i in range(lenLk):
for j in range(i+1, lenLk):
L1 = list(Lk[i])[:k-2]; L2 = list(Lk[j])[:k-2]
L1.sort(); L2.sort()
L1 = list(Lk[i]).sort()[:k-2]
L2 = list(Lk[j]).sort()[:k-2]
if L1==L2: #if first k-2 elements are equal
retList.append(Lk[i] | Lk[j]) #set union
return retList
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