vii

DAFTAR ISI

PERNYATAAN ..................................................................................................ii

HALAMAN PERSEMBAHAN.......................................................................... iv

KATA PENGANTAR ......................................................................................... v

DAFTAR ISI .....................................................................................................vii

DAFTAR GAMBAR.......................................................................................... ix

DAFTAR LAMPIRAN....................................................................................... xi

INTISARI..........................................................................................................xii

ABSTRACT .....................................................................................................xiii

BAB IPENDAHULUAN ..................................................................................... 1

1.1. Latar Belakang Masalah.................................................................... 1

1.2. Batasan Masalah ............................................................................... 2

1.3. Tujuan Penelitian .............................................................................. 2

1.4. Manfaat Penelitian ............................................................................ 3

1.5. Metode Penelitian ............................................................................. 3

1.6. Tinjauan Pustaka............................................................................... 3

BAB IILANDASAN TEORI ............................................................................... 7

2.1. Variabel Random .............................................................................. 7

2.2. Aljabar Matriks ................................................................................. 7

2.2.1. Pengertian matriks ................................................................... 7

2.2.2. Operasi-operasi matriks ........................................................... 9

2.2.4. Invers suatu matriks............................................................... 12

2.3. Matriks Data Multivariat ................................................................. 13

2.4. Jarak Euclid .................................................................................... 14

2.5. Statistik Deskriptif .......................................................................... 14

2.5.1. Rata-rata(Centroid)................................................................ 14

2.5.2. Variansi ................................................................................. 14

2.5.3. Standarisasi Data ................................................................... 14

2.6. Kovariansi dan Korelasi .................................................................. 16

KLASIFIKASI DENGAN METODE RANDOM FOREST DAN ANALISIS DISKRIMINAN LINEARCUT ASYRAF ANZILAUniversitas Gadjah Mada, 2014 | Diunduh dari http://etd.repository.ugm.ac.id/

viii

2.7. Variabel Kategorik.......................................................................... 17

2.8. Analisis Diskriminan Linear............................................................ 18

2.9. Summated Rating ............................................................................ 20

2.10. Decision Tree.................................................................................. 20

BAB IIIKLASIFIKASI DENGAN RANDOM FOREST DANANALISISDISKRIMINAN LINEAR ................................................................................. 23

3.1. Klasifikasi Data Mining .................................................................. 23

3.1.1. Data Preprocessing................................................................ 23

3.2. Decision Tree.................................................................................. 24

3.3. Classification and Regression Tree (CART) ................................... 24

3.4. Random Forest................................................................................ 25

3.4.1. Error dalam klasifikasi (OOB) .............................................. 27

3.4.2. Variabel Importance .............................................................. 27

3.4.3. Mean Decrease Gini (MDG) ................................................. 27

3.4.4. Confusion Matriks ................................................................. 28

3.5. Analisis Diskriminan Linear............................................................ 29

BAB IVHASIL DAN PEMBAHASAN ............................................................. 33

4.1. Data dan Deskripsi ......................................................................... 33

4.2. Deskripstif Data .............................................................................. 41

4.3. Klasifikasi Random Forest .............................................................. 43

4.3.1. Tingkat misklasifikasi (OOB) ................................................ 43

4.3.2. Variabel Importance .............................................................. 44

4.4. Analisis Diskriminan Linear............................................................ 46

4.4.1. Pemodelan diskriminan.......................................................... 46

4.5. Klasifikasi dengan Analisis Diskriminan Linear dan Random Forest49

BAB VPENUTUP ............................................................................................. 52

5.1. Kesimpulan..................................................................................... 52

5.2. Saran............................................................................................... 53

DAFTAR PUSTAKA ........................................................................................ 54

KLASIFIKASI DENGAN METODE RANDOM FOREST DAN ANALISIS DISKRIMINAN LINEARCUT ASYRAF ANZILAUniversitas Gadjah Mada, 2014 | Diunduh dari http://etd.repository.ugm.ac.id/