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핸즈온 비지도 학습
book

핸즈온 비지도 학습

by 강재원, 권재철, 안쿠르 A. 파텔
July 2020
Beginner to intermediate
444 pages
10h 50m
Korean
Hanbit Media, Inc.
Content preview from 핸즈온 비지도 학습
326
4부 텐서플로와 케라스를 사용한 심층 비지도 학습
MSE
0
.
909
로 이전보다 조금 개선됐습니다.
Mean squared error using user average: 0.9090717929472647
이제 영화의 평균 평점 (해당 영화에 다른 모든 사용자가 평가한 평점의 평균값 )을 기반으로 해
당 영화에 대한 사용자의 평점을 예측하겠습니다.
ratings_validation_prediction = np.zeros((n_users, n_movies)).T
i = 0
for row in ratings_train.T:
ratings_validation_prediction[i][ratings_validation_prediction[i]==0]
= np.mean(row[row>0])
i += 1
ratings_validation_prediction = ratings_validation_prediction.T
pred_validation = ratings_validation_prediction
[ratings_validation.nonzero()].flatten()
movie_average = mean_squared_error(pred_validation, actual_validation)
print('Mean squared error using movie average:' ...
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Publisher Resources

ISBN: 9791162243190