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邏輯回歸實戰詳細代碼,含注釋。邏輯回歸利用最優化算法梯度下降來找最佳回歸系數。用其做實戰預測疝氣病癥的病馬死亡率。

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代碼片段和文件信息

‘‘‘
Created?on?June?92018
do?logregers_gradAscent
@author:?zhe
‘‘‘

import?logRegres
from?numpy?import?*

dataArrlabelMat?=?logRegres.loadDataSet()

logRegres.gradAscent(dataArrlabelMat)

weights?=?logRegres.gradAscent(dataArrlabelMat)

logRegres.plotBestFit(weights.getA())

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-07-13?15:00??Logistics_Regression\__pycache__\
?????文件????????1871??2018-06-09?16:28??Logistics_Regression\__pycache__\logRegres.cpython-36.pyc
?????目錄???????????0??2018-07-13?15:00??Logistics_Regression\5.1_logRegres_gradAscent\
?????目錄???????????0??2018-07-13?15:00??Logistics_Regression\5.1_logRegres_gradAscent\__pycache__\
?????文件????????1952??2018-07-10?15:34??Logistics_Regression\5.1_logRegres_gradAscent\__pycache__\logRegres.cpython-36.pyc
?????文件?????????278??2018-06-10?11:54??Logistics_Regression\5.1_logRegres_gradAscent\do_logRegres.py
?????文件????????1816??2018-07-10?15:33??Logistics_Regression\5.1_logRegres_gradAscent\logRegres.py
?????文件???????15837??2018-07-10?15:34??Logistics_Regression\5.1_logRegres_gradAscent\LogRegres_GradAscent.eps
?????文件????????2187??2010-10-29?06:46??Logistics_Regression\5.1_logRegres_gradAscent\testSet.txt
?????目錄???????????0??2018-07-13?15:00??Logistics_Regression\5.2_logRegres_stocGradAscent\
?????目錄???????????0??2018-07-13?15:00??Logistics_Regression\5.2_logRegres_stocGradAscent\__pycache__\
?????文件????????2290??2018-07-10?16:18??Logistics_Regression\5.2_logRegres_stocGradAscent\__pycache__\logRegres_stocGradAscent.cpython-36.pyc
?????文件?????????455??2018-07-10?17:25??Logistics_Regression\5.2_logRegres_stocGradAscent\do_logRegres_stocGradAscent.py
?????文件???????15843??2018-07-10?17:25??Logistics_Regression\5.2_logRegres_stocGradAscent\LogRegres_StocGradAscent.eps
?????文件????????2178??2018-07-10?16:18??Logistics_Regression\5.2_logRegres_stocGradAscent\logRegres_stocGradAscent.py
?????文件????????2187??2010-10-29?06:46??Logistics_Regression\5.2_logRegres_stocGradAscent\testSet.txt
?????目錄???????????0??2018-07-13?15:00??Logistics_Regression\5.3_predict_the_death_rate_of_horse\
?????目錄???????????0??2018-07-13?15:00??Logistics_Regression\5.3_predict_the_death_rate_of_horse\__pycache__\
?????文件????????2185??2018-07-10?20:16??Logistics_Regression\5.3_predict_the_death_rate_of_horse\__pycache__\logRegres_stocGradAscent.cpython-36.pyc
?????文件?????????203??2018-07-07?11:08??Logistics_Regression\5.3_predict_the_death_rate_of_horse\do_Prediction.py
?????文件????????3788??2010-11-01?15:09??Logistics_Regression\5.3_predict_the_death_rate_of_horse\horseColicTest.txt
?????文件???????60655??2010-11-01?14:56??Logistics_Regression\5.3_predict_the_death_rate_of_horse\horseColicTraining.txt
?????文件????????2196??2018-07-10?20:15??Logistics_Regression\5.3_predict_the_death_rate_of_horse\logRegres_stocGradAscent.py

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