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閾炬帴錛?a target="_blank">https://pan.baidu.com/s/1d2qBLG6hdcBG6n9zZlxSWw
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1銆佹帉鎻priori綆楁硶瀵逛簬鍏寵仈瑙勫垯鎸栨帢?shù)腑棰懢J侀泦鐨勪駭鐢熶互鍙?qiáng)鍏宠仈瑙勫垯闆嗗悎鐨勪骇鐢煒q囩▼錛?/div>
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1銆侀綣侀」闆嗙殑鐢熸垚涓嶢priori綆楁硶瀹炵幇錛?/div>
2銆佸叧鑱旇鍒欑殑鐢熸垚榪囩▼涓庤鍒欑畻娉曞疄鐜幫紱
3銆佺粨鍚堟牱渚嬪綆楁硶榪涜鍒嗘瀽錛?/div>
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緙栧啓紼嬪簭瀹屾垚涓嬪垪綆楁硶錛?/div>
1銆丄priori綆楁硶
杈撳叆錛?鏁版嵁闆咲錛涙渶灝忔敮鎸佹暟minsup_count錛?/div>
杈撳嚭錛?棰戠箒欏圭洰闆哃
L1={large 1-itemsets}
For (k=2; Lk-1≠Φ; k++)
Ck=apriori-gen (Lk-1); // Ck鏄痥涓厓绱犵殑鍊欓€夐泦
For all transactions t∈D do
begin Ct=subset(Ck,t); //Ct鏄墍鏈塼鍖呭惈鐨勫€欓€夐泦鍏冪礌
for all candidates c ∈Ct do c.count++;
end
Lk={c ∈Ck| c.count 鈮?minsup_count }
End
L=∪Lk;
2銆乤priori-gen (Lk-1) 鍊欓€夐泦浜х敓綆楁硶
杈撳叆錛?(k-1)-棰戠箒欏圭洰闆哃k-1
杈撳嚭錛?k-棰戠箒欏圭洰闆咰k
For all itemset p∈Lk-1 do
For all itemset q∈Lk-1 do
If p.item1=q.item1, p.item2=q.item2, …,p.itemk-2=q.itemk-2, p.itemk-1<q.itemk-1
then
begin c=p∞q
if has_infrequent_subset(c, Lk-1)
then delete c
else add c to Ck
End
Return Ck
3銆乭as_infrequent_subset(c, Lk-1)
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杈撳叆錛?涓€涓猭-棰戠箒欏圭洰闆哃k-1 錛?k-1)-棰戠箒欏圭洰闆哃k-1
杈撳嚭錛歝鏄惁浠庡€欓€夐泦涓垹闄ょ殑甯冨皵鍒ゆ柇
For all (k-1)-subsets of c do
If Not(S∈Lk-1) THEN return TRUE;
Return FALSE;
4銆丷ule-generate(L,minconf)
杈撳叆錛氶綣侀」鐩泦錛涙渶灝忎俊浠誨害
杈撳嚭錛氬己鍏寵仈瑙勫垯
綆楁硶錛?/div>
FOR each frequent itemset lk in L
generules(lk,lk);
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| Java1234瀹樻柟緹?5錛?/td> | 838462530 |
鑻忓叕緗戝畨澶?32061202001004鍙?/p>
