#?-*-?coding:?utf-8?-*-
“““
Created?on?Tue?Jul??3?12:06:45?2018

@author:?Administrator
“““

from?os?import?listdir
from?numpy?import?*
from?KNN_algr?import?*

def?img2vec（filename）:
????‘‘‘this?is?to...將32X32的圖像轉(zhuǎn)化為1X1024的行向量‘‘‘
????returnvec?=?zeros（（11024））
????
????with?open（filename）?as?fp:
????????for?i?in?range（32）:
????????????line?=?fp.readline（）
????????????for?j?in?range（32）:
????????????????returnvec[0?32*i?+?j]?=?int（line[j]）
????#?returnVEC按32進(jìn)位，j代表每位的32個(gè)元素????
????return?returnvec

def?HandWritingTest（train_dirtest_dir）:
????labels?=?[]
????File_list?=?listdir（train_dir）
????#?將目錄內(nèi)的文件按名字放入列表，使用函數(shù)解析為數(shù)字
????m?=?len（File_list）
????train_mat?=?zeros（（m1024））
????for?i?in?range（m）:
????????fname?=?File_list[i]
????????fstr?=?fname.split（‘.‘）[0]
????????fnumber?=?int（fstr.split（‘_‘）[0]）
????#?比如‘digits/testDigits/0_13.txt‘，被拆分為013txt
????#?此處0即為標(biāo)簽數(shù)字???
????????labels.append（fnumber）
????????train_mat[i:]?=?img2vec（‘%s/%s‘?%?（train_dirfname））
????#?labels?is?label_vec，同之前的KNN代碼相同，存儲(chǔ)標(biāo)簽
????
????test_File_list?=?listdir（test_dir）
????error?=?0.0
????test_m?=?len（test_File_list）
????for?i?in?range（test_m）:
????????fname?=?test_File_list[i]
????????fstr?=?fname.split（‘.‘）[0]
????????fnumber?=?int（fstr.split（‘_‘）[0]）
????????vec_test?=?img2vec（‘digits/testDigits/%s‘?%?fname）
????????Result?=?classify_KNN（vec_test?train_mat?labels?3）
????????print（“the?classifier?came?with:?%d?the?real?answer?is?:%d?“?\
?????????????????%?（Result?fnumber））
????????if（Result?!=?fnumber）?:?error?+=?1
????#?這部分和Test模塊相同，直接copy過(guò)來(lái)就好
????print（“the?accuracy?is?%f?|?the?error_rate?is?%f?“?%?\
??????????（1-?（float（error）?/float（test_m））（float（error）?/float（test_m））））

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\
?????文件??????????66??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\.gitattributes
?????文件????????2881??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\README.md
?????目錄???????????0??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\
?????文件????????1867??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\Digit_recog.py
?????文件?????????634??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\Feature_scaling.py
?????文件????????1075??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\KNN_algr.py
?????文件?????????989??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\Parse_data.py
?????文件????????1468??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\TestData.py
?????文件???????????1??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\__init__.py
?????文件?????????873??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\__main__.py
?????文件???????26067??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\datingTestSet2.txt
?????目錄???????????0??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\
?????目錄???????????0??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_0.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_1.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_10.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_11.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_12.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_13.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_14.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_15.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_16.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_17.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_18.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_19.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_2.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_20.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_21.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_22.txt
?????文件????????1056??2018-08-19?03:49??Machine-Learning-in-Action-Python3-master\ch01-KNN\digits\testDigits\0_23.txt
............此處省略5878個(gè)文件信息