Scikit-learn: AttributeError: 'GridSearchCV' ๊ฐœ์ฒด์— 'best_params_' ์†์„ฑ์ด ์—†์Šต๋‹ˆ๋‹ค.

์— ๋งŒ๋“  2014๋…„ 06์›” 26์ผ  ยท  3์ฝ”๋ฉ˜ํŠธ  ยท  ์ถœ์ฒ˜: scikit-learn/scikit-learn

์ฃ„์†กํ•ฉ๋‹ˆ๋‹ค. ๊ฒŒ์‹œํ•  ์œ„์น˜๊ฐ€ ์ž˜๋ชป๋œ ๊ฒฝ์šฐ์ž…๋‹ˆ๋‹ค. ๋‚ด ์ฝ”๋“œ:

from sklearn import datasets, linear_model, cross_validation, grid_search
import numpy as np
digits = datasets.load_digits()
x = digits.data[:1000]
y = digits.target[:1000]
kf_total = cross_validation.KFold(len(x), n_folds=10, indices=True, shuffle=True, random_state=4)
lr = linear_model.LogisticRegression()
c_range = np.logspace(0, 4, 10)
lrgs = grid_search.GridSearchCV(estimator=lr, param_grid=dict(C=c_range), n_jobs=1)
results_lrgs = cross_validation.cross_val_score(lrgs, x, y, cv=kf_total, n_jobs=1)
print lrgs.best_params_

์˜ค๋ฅ˜:

Traceback (most recent call last):
  File "cross.py", line 11, in <module>
    print lrgs.best_params_
AttributeError: 'GridSearchCV' object has no attribute 'best_params_'

๋‚ด๊ฐ€ ๋ฌด์—‡์„ ๋†“์น˜๊ณ  ์žˆ์Šต๋‹ˆ๊นŒ?

๊ฐ€์žฅ ์œ ์šฉํ•œ ๋Œ“๊ธ€

ํ•์„ ๋ถ€๋ฅด์ง€ ์•Š์œผ์…จ์ฃ ?
2014๋…„ 6์›” 26์ผ ์˜คํ›„ 4์‹œ 36๋ถ„, "Vitor Campos de Oliveira" <
[email protected]>์€ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ์ผ์Šต๋‹ˆ๋‹ค.

์ฃ„์†กํ•ฉ๋‹ˆ๋‹ค. ๊ฒŒ์‹œํ•  ์œ„์น˜๊ฐ€ ์ž˜๋ชป๋œ ๊ฒฝ์šฐ์ž…๋‹ˆ๋‹ค. ๋‚ด ์ฝ”๋“œ:

sklearn ๊ฐ€์ ธ์˜ค๊ธฐ ๋ฐ์ดํ„ฐ ์„ธํŠธ์—์„œ, linear_model, cross_validation, grid_search
numpy๋ฅผ np๋กœ ๊ฐ€์ ธ์˜ค๊ธฐ
์ˆซ์ž = dataset.load_digits()
x = ์ˆซ์ž.๋ฐ์ดํ„ฐ[:1000]
y = ์ˆซ์ž.๋Œ€์ƒ[:1000]
kf_total = cross_validation.KFold(len(x), n_folds=10, ์ธ๋ฑ์Šค=True,
์…”ํ”Œ=์ฐธ, random_state=4)
lr = linear_model.LogisticRegression()
c_range = np.logspace(0, 4, 10)
lrgs = grid_search.GridSearchCV(estimator=lr, param_grid=dict(C=c_range),
n_์ž‘์—…=1)
๊ฒฐ๊ณผ_lrgs = cross_validation.cross_val_score(lrgs, x, y, cv=kf_total,
n_์ž‘์—…=1)
lrgs.best_params_ ์ธ์‡„

์˜ค๋ฅ˜:

์—ญ์ถ”์ (๊ฐ€์žฅ ์ตœ๊ทผ ํ˜ธ์ถœ ๋งˆ์ง€๋ง‰):
ํŒŒ์ผ "cross.py", 11ํ–‰,
lrgs.best_params_ ์ธ์‡„
AttributeError: 'GridSearchCV' ๊ฐœ์ฒด์— 'best_params_' ์†์„ฑ์ด ์—†์Šต๋‹ˆ๋‹ค.

๋‚ด๊ฐ€ ๋ฌด์—‡์„ ๋†“์น˜๊ณ  ์žˆ์Šต๋‹ˆ๊นŒ?

โ€”
์ด ์ด๋ฉ”์ผ์— ์ง์ ‘ ๋‹ต์žฅํ•˜๊ฑฐ๋‚˜ GitHub์—์„œ ํ™•์ธํ•˜์„ธ์š”.
https://github.com/scikit-learn/scikit-learn/issues/3320.

๋ชจ๋“  3 ๋Œ“๊ธ€

ํ•์„ ๋ถ€๋ฅด์ง€ ์•Š์œผ์…จ์ฃ ?
2014๋…„ 6์›” 26์ผ ์˜คํ›„ 4์‹œ 36๋ถ„, "Vitor Campos de Oliveira" <
[email protected]>์€ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ์ผ์Šต๋‹ˆ๋‹ค.

์ฃ„์†กํ•ฉ๋‹ˆ๋‹ค. ๊ฒŒ์‹œํ•  ์œ„์น˜๊ฐ€ ์ž˜๋ชป๋œ ๊ฒฝ์šฐ์ž…๋‹ˆ๋‹ค. ๋‚ด ์ฝ”๋“œ:

sklearn ๊ฐ€์ ธ์˜ค๊ธฐ ๋ฐ์ดํ„ฐ ์„ธํŠธ์—์„œ, linear_model, cross_validation, grid_search
numpy๋ฅผ np๋กœ ๊ฐ€์ ธ์˜ค๊ธฐ
์ˆซ์ž = dataset.load_digits()
x = ์ˆซ์ž.๋ฐ์ดํ„ฐ[:1000]
y = ์ˆซ์ž.๋Œ€์ƒ[:1000]
kf_total = cross_validation.KFold(len(x), n_folds=10, ์ธ๋ฑ์Šค=True,
์…”ํ”Œ=์ฐธ, random_state=4)
lr = linear_model.LogisticRegression()
c_range = np.logspace(0, 4, 10)
lrgs = grid_search.GridSearchCV(estimator=lr, param_grid=dict(C=c_range),
n_์ž‘์—…=1)
๊ฒฐ๊ณผ_lrgs = cross_validation.cross_val_score(lrgs, x, y, cv=kf_total,
n_์ž‘์—…=1)
lrgs.best_params_ ์ธ์‡„

์˜ค๋ฅ˜:

์—ญ์ถ”์ (๊ฐ€์žฅ ์ตœ๊ทผ ํ˜ธ์ถœ ๋งˆ์ง€๋ง‰):
ํŒŒ์ผ "cross.py", 11ํ–‰,
lrgs.best_params_ ์ธ์‡„
AttributeError: 'GridSearchCV' ๊ฐœ์ฒด์— 'best_params_' ์†์„ฑ์ด ์—†์Šต๋‹ˆ๋‹ค.

๋‚ด๊ฐ€ ๋ฌด์—‡์„ ๋†“์น˜๊ณ  ์žˆ์Šต๋‹ˆ๊นŒ?

โ€”
์ด ์ด๋ฉ”์ผ์— ์ง์ ‘ ๋‹ต์žฅํ•˜๊ฑฐ๋‚˜ GitHub์—์„œ ํ™•์ธํ•˜์„ธ์š”.
https://github.com/scikit-learn/scikit-learn/issues/3320.

์ข‹์•„์š”. =\ ํ•์„ ์žŠ์–ด๋ฒ„๋ ธ์Šต๋‹ˆ๋‹ค. ์•ˆ๋“œ๋ ˆ์•„์Šค ๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค.

์–ผ๋งˆ๋‚˜ ๊ฑธ๋ฆด๊นŒ์š”?

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