July 2020
Beginner to intermediate
444 pages
10h 50m
Korean
Content preview from 핸즈온 비지도 학습
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
210
2부 사이킷런을 사용한 비지도 학습 모델
이러한 다른 포인트를 군집의
경계점
border
point
이라고 합니다.
일반적으로 최소 샘플수가 증가하면 군집 수가 감소합니다. 앞서 언급한
eps
와 마찬가지로
MNIST
데이터셋에 대한 최적의 최소 샘플수를 찾아야 합니다. 보다시피 군집에는 중심점과
경계점이 있지만 모든 면에서 그들은 동일한 그룹에 속합니다. 군집의 중심점 또는 경계점으로
그룹화되지 않는 모든 포인트는 이상치로 레이블됩니다.
5.5.2
MNIST
데이터셋에
DBSCAN
적용하기
이제 본격적인 실습으로 넘어가겠습니다. 이전과 마찬가지로
PCA
로 축소한
MNIST
데이터셋
의 처음
100
개 주성분에
DBSCAN
을 적용합니다.
from sklearn.cluster import DBSCAN
eps = 3
min_samples = 5
leaf_size = 30
n_jobs = 4
db = DBSCAN(eps=eps, min_samples=min_samples, leaf_size=leaf_size, n_jobs=n_jobs)
cutoff = 99
X_train_PCA_dbscanClustered = db.fit_predict(X_train_PCA.loc[:,0:cutoff])
X_train_PCA_dbscanClustered =
pd.DataFrame(data
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.