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TOTO HARYANTO | Naive Bayes Copyright Toto Haryanto [email protected] http://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/ Naive Bayes Sambil Mengingat Kembali Tentang Naive bayes. Berikut contoh proses pengambilan keputusa dengan Naive Bayes. 1. Diketahui Data Training Sebagai berikut: ID X1 X2 X3 Class 1 Yes Single 125 No 2 No Married 100 No 3 No Single 70 No 4 Yes Married 120 No 5 No Divorce 95 Yes 6 No Married 60 No page 1 / 26

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Page 1: Naive Bayes - achamad.staff.ipb.ac.idachamad.staff.ipb.ac.id/wp-content/plugins/as-pdf/TOTO HARYANT… · Naive Bayes Sambil Mengingat Kembali Tentang Naive bayes. Berikut contoh

TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Naive Bayes

Sambil Mengingat Kembali Tentang Naive bayes. Berikut contoh proses pengambilan keputusa dengan Naive Bayes.

1. Diketahui Data Training Sebagai berikut:

ID X1 X2 X3 Class

1 Yes Single 125 No

2 No Married 100 No

3 No Single 70 No

4 Yes Married 120 No

5 No Divorce 95 Yes

6 No Married 60 No

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

7

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Yes

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Divorce

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

220

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

No

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

8

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

No

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Single

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85

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Yes

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9

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

No

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Married

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75

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

No

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

10

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

No

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Single

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

90

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Yes

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Dengan, menggunakan Naive Bayes, tentukan X(X1=No,X2=Married,X3=120)  ?

jawab:

P(Y=Yes) = 3/10,  P(Y=No) = 7/10

P(X1=No|Y=Yes) = 3/3 = 1

P(X1=No|Y=No) = 4/7

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

P(X2=Married|Y=Yes) = 0/3

P(X2=Married|Y=No)  = 4/7

P(X3=120|Y=Yes) = 0/3

P(X3=120|Y=No)  = 1/7

P (X1=No,X2=Married,X3=120|Y=Yes) :

= {P(P(X1=No|Y=Yes).P(X2=Married|Y=Yes).P(X3=120|Y=Yes).P(Y=Yes)}

=              {(1)                 .(0/3)                                 .(0/3)                            .(3/10)}

= 0

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

P (X1=No,X2=Married,X3=120|Y=No) :

= {P(P(X1=No|Y=No).P(X2=Married|Y=No).P(X3=120|Y=No).P(Y=No)}

=              {(4/7)                 .(4/7)                                 .(1/7)     

                      .(7/10)}

= 0,032

Sehingga Keputusannya adalah No

 

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

 

Silahkan Mencoba Jika : X(X1=Yes,X2=Divorce,X3=85)   ?

Kirim jawaban Anda melalui blog ini...

 

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TOTO HARYANTO | Naive BayesCopyright Toto Haryanto [email protected]://totoharyanto.staff.ipb.ac.id/2012/03/27/naive-bayes/

Selamat Mencoba....:-)

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