KASDD - PCA
Quiz
•
Mathematics
•
University
•
Practice Problem
•
Easy
Dr. Rahadianti
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dimensi dalam konteks KA dan Sains Data merujuk pada
Jumlah dimensi ruang
Jumlah atribut yang digunakan
Jumlah data yang digunakan
Jumlah atribut numerik yang digunakan
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hughes phenomenon adalah..
Lebih banyak fitur/atribut selalu lebih baik
Lebih banyak fitur/atribut tidak akan lebih baik
Lebih banyak fitur/atribut belum tentu lebih baik
Semua salah
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Untuk mengurangi dimensi, teknik yang dapat dilakukan adalah
Feature Selection
Dimensionality Reduction
Keduanya salah
Keduanya benar
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Principle component analysis adalah salah satu teknik
Feature Selection
Dimensionality Reduction
Keduanya salah
Keduanya benar
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
PCA melakukan transformasi data terhadap koordinat basis yang berbeda. Basis yang baru dipilih yang..
Paling mencakup variansi data
Paling mencakup mean data
Paling mencakup range data
Paling mencakup perubahan data
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Langkah-langkah PCA dimulai dengan ........, untuk......
Standardisasi nilai, memindahkan nilai ke koordinat origin
Standardisasi nilai, menyamakan range nilai
Normalisasi nilai, memindahkan nilai ke koordinat origin
Normalisasi nilai, menyamakan range nilai
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada langkah ke 3, nilai dan vektor eigen dihitung dari matriks...
Matriks Kovarian
Matriks data mentah
Matriks vektor eigen
Matriks korelasi
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