#?coding=gbk
import?numpy?as?np?????
from?os?import?listdir?
from?sklearn.neural_network?import?MLPClassifier?

#將加載的32*32圖片矩陣展開(kāi)成一列向量
def?img2vector（fileName）:????
????retMat?=?np.zeros（[1024]int）?#定義返回的矩陣，大小為1*1024
????fr?=?open（fileName）???????????#打開(kāi)包含32*32大小的數(shù)字文件?
????lines?=?fr.readlines（）???????
????for?i?in?range（32）:???????????
????????for?j?in?range（32）:???????#并將01數(shù)字存放在retMat中?????
????????????retMat[i*32+j]?=?lines[i][j]????
????return?retMat

#加載訓(xùn)練數(shù)據(jù)的方法
def?readDataSet（path）:????
????fileList?=?listdir（path）???
????numFiles?=?len（fileList）???
????dataSet?=?np.zeros（[numFiles1024]int）?#用于存放所有的數(shù)字文件
????hwLabels?=?np.zeros（[numFiles10]）??????#用于存放對(duì)應(yīng)的one-hot標(biāo)簽
????for?i?in?range（numFiles）:???
????????filePath?=?fileList[i]??#獲取文件名稱/路徑??????
????????digit?=?int（filePath.split（‘_‘）[0]）??#通過(guò)文件名獲取標(biāo)簽??????
????????hwLabels[i][digit]?=?1.0????????#將對(duì)應(yīng)的one-hot標(biāo)簽置1
????????dataSet[i]?=?img2vector（path?+‘/‘+filePath）???
????return?dataSethwLabels
?
#加載訓(xùn)練集
train_dataSet?train_hwLabels?=?readDataSet（‘trainingDigits‘）

#構(gòu)建神經(jīng)網(wǎng)絡(luò)
clf?=?MLPClassifier（hidden_layer_sizes=（100）
????????????????????activation=‘logistic‘?solver=‘a(chǎn)dam‘
????????????????????learning_rate_init?=?0.0001?max_iter=1500）
print（clf）

#訓(xùn)練神經(jīng)網(wǎng)絡(luò)
clf.fit（train_dataSettrain_hwLabels）
?
#加載測(cè)試集
dataSethwLabels?=?readDataSet（‘testDigits‘）

res?=?clf.predict（dataSet）???#使用訓(xùn)練好的MLP對(duì)測(cè)試集進(jìn)行預(yù)測(cè)
error_num?=?0????????????????#統(tǒng)計(jì)預(yù)測(cè)錯(cuò)誤的數(shù)目
num?=?len（dataSet）???????????#測(cè)試集的數(shù)目
for?i?in?range（num）:?????????#遍歷預(yù)測(cè)結(jié)果
????#比較長(zhǎng)度為10的數(shù)組，返回包含01的數(shù)組，0為不同，1為相同
????#若預(yù)測(cè)結(jié)果與真實(shí)結(jié)果相同，則10個(gè)數(shù)字全為1，否則不全為1
????if?np.sum（res[i]?==?hwLabels[i]）?????????error_num?+=?1?????????????????????
print（“Total?num:“num“?Wrong?num:“?\
	error_num“??WrongRate:“error_num?/?float（num））

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????28979??2018-07-12?01:29??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\100_1000.PNG

?????文件??????24124??2018-07-12?01:34??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\100_1500.PNG

?????文件??????24430??2018-07-12?00:00??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\100_2000.PNG

?????文件??????28919??2018-07-12?01:15??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\100_500.PNG

?????文件??????24388??2018-07-12?00:11??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\200_2000.PNG

?????文件??????24548??2018-07-12?00:02??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\50_2000.PNG

?????文件???????1993??2018-07-12?01:29??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\demo.py

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_0.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_1.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_10.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_11.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_12.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_13.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_14.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_15.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_16.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_17.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_18.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_19.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_2.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_20.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_21.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_22.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_23.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_24.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_25.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_26.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_27.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_28.txt

?????文件???????1088??2010-10-07?21:35??神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)“手寫識(shí)別”\testDigits\0_29.txt

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