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BM bmT2`K`F2iǶ 2tKTH2- Bi }M/b i?2 b2i Q7 Bi2Kb r?B+? `2 7`2[m2MiHv Tmi BMiQ i?2 bK2 #bF2i M/ #Qm;?i iQ;2i?2`X JQ`2Qp2`- r2 +QmH/ b2i bmTTQ`i i?`2b?QH/ iQ bT2+B7v ?Qr 7`2[m2Mi Bb 7`2[m2Mi 2MQm;? 7Q` i?2 Bi2Kb2ib iQ #2 b2H2+i2/X

TTHvBM; i?2 b?QTTBM; MHQ;v iQ Qm` b+2M`BQ- mb2` B/ Q7 2+? TQbi Bb M ǵBi2KǶ- M/ 2p2`v jy TQbib BM i?`2/ 7Q`Kb ǵ#bF2iǶ- bQ 2+? 7`2[m2Mi Bi2Kb2i rQmH/ #2 ;`QmT mb2`b i?i 7`2[m2MiHv ǵTT2`2/ iQ;2i?2`Ƕ BM i?`2/bX AM Qm` 2tT2`BK2Mib- 7`2[m2Mi Bi2Kb2i KBMBM; Bb +QM/m+i2/ QM HH i?`2/b BM

#Qi? i`BMBM; b2i M/ i2bi b2i- rBi? i?2 ?2HT Q7 i?2 P`M;2 U.2KȒ` 2i HX-kyRjV HB#``v- M/ /Q2bMǶi BMpQHp2 i?2 mb2 Q7 ;`QmM/ i`mi?X

_i?2` i?M #2BM; bQK2?Qr BM+Q`TQ`i2/ b 72im`2 BM Qm` KQ/2H- i?2 KBM2/

7`2[m2Mi Bi2Kb2ib `2 mb2/ iQ 7m2H bKQQi?BM; T`Q+2bb QM i?2 T`2/B+iBQM QmiTmib Q7 i?2 #b2 KQ/2H^kdX AM i?Bb bKQQi?BM; T`Q+2bb- 7Q` 2+? j@2H2K2Mi 7`2[m2Mi Bi2Kb2i^k3- r2 // mT i?2 bTKB+Biv^kNQ7 i?2 mb2`b BM BiX A7 i?2 bmK Bb

#B;;2` i?M i?`2b?QH/- i?2M r2 T`2/B+i HH mb2`b BM i?Bb j@2H2K2Mi Bi2Kb2i iQ #2 bTKK2`bX h?2 Tb2m/Q+Q/2 Q7 i?2 r?QH2 T`Q+2/m`2 Bb BM H;Q`Bi?K 8XdX qBi? i?2 /2b+`B#2/ bKQQi?BM; T`Q+2bb- i?2 6@K2bm`2 `2+?2b e9XeyW- r?B+?

/Q2bMǶi HQQF #/ i HH +QMbB/2`BM; i?2 `iBQ Q7 bTKK2`b BM i2bi b2i Bb QMHv yXN3WX

kdh?2 +m``2Mi KQ/2H 7Q` bTKK2` /2i2+iBQM r2Ƕ`2 BKT`QpBM; mTQMX Aib T2`7Q`KM+2 rb b?QrM BM i#H2 jk

k3A7 i?2`2 `2 #B;;2` 7`2[m2Mi Bi2Kb2ib- r2 bBKTHv iF2 HH j@2H2K2Mi bm#b2ib Q7 i?2KX

kNT`Q##BHBbiB+ T`2/B+iBQM QmiTmi #v Qm` #b2 KQ/2H B7 i?2 mb2` Bb BM i2bi b2i- Q` Dmbi y Q` R ++Q`/BM; iQ i?2 ;`QmM/ i`mi? B7 i?2 mb2` Bb BM i`BMBM; b2i

H;Q`Bi?K k h?2 r?QH2 T`Q+2bb +QK#BM2/ rBi? i?2 bKQQi?BM; bi2T

R 7mM+iBQM 6BMHJQ/2HUusersntrain, labelsntrain, usersntest, postsV

k f eaturesntrain← 1ti`+i62im`2bUusersntrainV

j f eaturesntest ← 1ti`+i62im`2bUusersntestV

9 model ← JGT`Q+2/m`2Ufeaturesntrain, labelsntrainV

8 preds, probs← JF2S`2/B+iBQMbUmodel, featuresntestV

e f reqngroups ← 6BM/6`2[m2Mi:`QmTbUpostsV HH TQbib

d preds← aKQQi?S`2/b6`2[:`TbUpreds, probs, freqngroupsV

3 `2im`M preds

N 7mM+iBQM 6BM/6`2[m2Mi:`QmTbUpostsV

Ry threads← BM/2t i?2 posts rBi? i?2B` i?`2/ B/b

RR baskets ← 2KTiv HBbi BMBiBHBx2 i?2 HBbi Q7 ǵ#bF2ibǶ Q` Bi2Kb2ib

Rk 7Q` t← threads /Q

Rj 7Q` β ← 2+? jy +QMb2+miBp2 TQbi2`bǶ B/b BM i?`2/ t /Q

R9 TT2M/ β iQ baskets

R8 f reqngroups ← 6`2[m2MiAi2Kb2iJBMBM;UbasketsV ǵP`M;2Ƕ

Re `2KQp2 i?2 ;`QmTb rBi? support <3 7`QK freqngroups

Rd `2im`M f reqngroups

R3 7mM+iBQM aKQQi?S`2/b6`2[:`TbUpreds, probs, f reqngroupsV

RN 7Q` f reqngroup← freqngroups /Q

ky 7Q` f reqntriple← 2+? j@Bi2K bm#b2i Q7 freqngroup /Q

kR sum ← 0 BMBiBHBx2 i?2 ǵbTKB+BivǶ Q7 i?2 i`BTH2

kk 7Q` uid ← freqntriple /Q

kj B7 uid∈ usersntrain i?2M

k9 sum ← sum + labelsntrain[uid] 1 B7 bTKK2`

k8 2Hb2

ke sum ← sum + probs[uid] T`Q##HBiv Q7 bTKK2`

kd B7 sum > 1.2 i?2M ǵbTKB+BivǶ ?B;?2` i?M i?`2b?QH/

k3 7Q` uid ← freqntriple /Q

kN preds[uid] ← 1 T`2/B+i HH j b bTKK2`b

jy `2im`M preds

T`2+BbBQM `2+HH 6@K2bm`2

edX8jW eRXNyW e9XeyW

h#H2 jj, T`Q}H2b- KtnbTKB+Bivn7Tb- #m`biBM2bbni?`Qrrvn`2;-rBi? i?2 bKQQi?BM; T`Q+2bb

;BM- i?2 7+i i?i Qm` #2bi KQ/2H 7Q` bTK /2i2+iBQM 7Q` }`bi TQbib ?TT2Mb iQ ?p2 ?B;?2` T`2+BbBQM i?M `2+HH ?2HTbX Ai bQK2?Qr +mb2b i?2 #b2 KQ/2H i`BM2/ rBi? KtnbTKB+Bivn7Tb 72im`2 iQ ?p2 ?B;?2` T`2+BbBQM b r2HHX aBM+2 i?Bb bKQQi?BM; T`Q+2bb BMimBiBp2Hv ;2`b iQr`/ BKT`QpBM; i?2 `2+HH-i?2 HQr2` `2+HH Q7 `2+HH-i?2 #b2 KQ/2H H2p2b #B; `QQK 7Q` i?Bb T`Q+2bb iQ #QQbi i?2 T2`7Q`KM+2X

**8Xd *p2i**

AM b2+iBQM 8XeX9- i?2 #m`biBM2bb 72im`2 +?2+F2/ UbQ`i Q7V B7 i?2 ++QmMi rb

`2;Bbi2`2/ /m`BM; i?2 bK2 T2`BQ/ b bQK2 i?`Qrrv bTKK2` ++QmMib BM i?2 i`BMBM; b2iX h?2 mb27mHM2bb Q7 bm+? 72im`2 /2T2M/b QM i?2 7+i i?i Qm`

i2bi b2i Bb i2KTQ`HHv +QMiB;mQmb rBi? i`BMBM; b2iX PM i?2 +QMi``v- B7 i?2 i`BMBM; b2i M/ i2bi b2i r2`2 +QHH2+i2/ 7`QK kyRy M/ kyRk- `2bT2+iBp2Hv-i?2 QM2 v2` ;T Kv KF2 bm+? 72im`2 H2bb mb27mH- #2+mb2 `2bT2+iBp2Hv-i?2`2 Bb bHBK@

K2` +?M+2 i?2`2 Bb i?`Qrrv bTKK2` ++QmMib BM i2bi b2i r?B+? rb

`2;Bbi2`2/ BM i?2 bK2 #i+? b i?2 QM2b BM i`BMBM; b2iX

AM b2+iBQM 8XeX8- r?2M M ++QmMi BM KBM2/ 7`2[m2Mi Bi2Kb2i Bb BM i?2 i`BMBM;

b2i- i?2 H;Q`Bi?K /B`2+iHv HQQF mT i?2 ;`QmM/ i`mi? 7Q` Bib bTKB+Biv UHBM2 k9 BM H;Q`Bi?K VX ;BM- i?2 T`Q+2bb `2HB2b QM i?2 7+i i?2 ++QmMib BM i`BMBM;

b2i M/ i2bi b2i +QmH/ #2 BM i?2 bK2 ;`QmT i?i 7`2[m2MiHv TT2`2/ iQ;2i?2`X h?2 i?BM; Bb i?Bb r?QH2 /ib2i Bb p2`v iB;?iHv +QmTH2/ iQ;2i?2`- r?B+?

KF2b bQK2 mM/2bB`#H2 BMi2`T`2iiBQMb TQbbB#H2 QM Qm` 2tT2`BK2MiiBQM `2@

bmHibX 6Q` K+?BM2 H2`MBM; Tm`TQb2- r2 bTHBi i?2 /i KBMHv ++Q`/BM;

iQ i?2 i2KTQ`H Q`/2` b /2b+`B#2/ BM b2+iBQM 8Xk- #mi i?2`2 Hrvb b22Kb iQ #2 bQK2 bQ`i Q7 B``2H2pMi +QMM2+iBQM #2ir22M i`BMBM; b2i M/ i2bi b2i i?i +QmH/ ii`B#mi2 i?2 2pHmiBQM `2bmHi iQX 6Q` 2tKTH2- BM bTK /2i2+@

iBQM- bQK2 TQbib BM i`BMBM; M/ i2bi b2i +QmH/ b?`2 i?2 bK2 mi?Q`- bQ r2 +`2i2/ i2bi b2i iQ 2`/B+i2 M Hi2`MiBp2 i?2Q`v i?i Qm` KQ/2H Bb +Tim`BM; bQK2 mb2`@bT2+B}+ #mi MQM@bTK `2Hi2/ #2?pBQ`b- b /Bb+mbb2/

BM b2+iBQM 8XkXRX 1p2M i?2M- /Bz2`2Mi ++QmMib KB;?i biBHH #2 b?`2/ #v i?2 bK2 +imH TQbi2`bX AiǶb p2`v /B{+mHi- B7 MQi BKTQbbB#H2- iQ +QKTH2i2Hv 2t@

+Hm/2 HH FBM/ Q7 B``2H2pMi +QMM2+iBQMb #2ir22M i`BMBM; b2i M/ i2bi b2i- M/

RyyW ii`B#mi2 i?2 T2`7Q`KM+2 Q7 i?2 KQ/2H iQ Bi bm++2bb7mHHv +Tim`BM; i?2 2bb2MiBH Tii2`M Q7 i?Bb +Qp2`i K`F2iBM; +KTB;M UQ` QTBMBQM bTKKBM;

+iBpBiB2bVX

h?2 i2KTQ`H +QMiB;mQmbM2bb K2MiBQM2/ BM i?2 }`bi irQ T`;`T?b BM i?Bb b2+iBQM Bb MQi?2` KMB72biiBQM Q7 iB;?iHv +QmTH2/ Mim`2 Q7 i?2 /ib2iX AMbi2/ Q7 i`vBM; iQ 2t+Hm/2 bm+? 7+iQ`- r?B+? KB;?i #2 BKTQbbB#H2 iQ /Q- r2 H2p2`;2 Bi iQ ?2HT i?2 /2i2+iBQM Q7 bTKK2`bX q2 Dmbi M22/ iQ #2 r`2 Q7 i?2 7+i i?i 7Q` Qm` `2bmHib iQ #2 K2MBM;7mH- i?2 i2KTQ`H +QMiB;mQmbM2bb

bbmKTiBQM #2ir22M i?2 i`BMBM; b2i M/ i?2 i2bi b2i ?b iQ #2 i?2`2X

e 6mim`2 qQ`F

/KBii2/Hv- KQbi Q7 i?2 i2+?MB[m2b r2 /QTi BM bTK M/ bTKK2` /2i2+iBQM r2`2 `i?2` #bB+- r?B+? KB;?i H2p2 bQK2 `QQK 7Q` BKT`Qp2K2MiX AM i?Bb b2+iBQM- r2 bT2+B}+HHv TQBMi Qmi bQK2 TQi2MiBHHv 7`mBi7mH /B`2+iBQMb i?i +QmH/ #2 rQ`F2/ QM BM i?2 7mim`2X

在文檔中垃圾評論的分析與偵測 - 用流出資訊作為標準答案 (頁 46-58)

8X8 aTK .2i2+iBQM 7Q` _2THB2b

8Xe aTKK2` .2i2+iBQM

8Xd *p2i

e 6mim`2 qQ`F

8Xe aTKK2` .2i2+iBQM

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