《机器学习实战》Python3代码
代码片段和文件信息
属性 大小 日期 时间 名称
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目录 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-masterREADME.md
目录 0 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNN
文件 1867 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNDigit_recog.py
文件 634 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNFeature_scaling.py
文件 1075 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNKNN_algr.py
文件 989 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNParse_data.py
文件 1468 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNTestData.py
文件 1 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNN\__init__.py
文件 873 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNN\__main__.py
文件 26067 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdatingTestSet2.txt
目录 0 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits
目录 0 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _0.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _1.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _10.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _11.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _12.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _13.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _14.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _15.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _16.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _17.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _18.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _19.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _2.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _20.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _21.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _22.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _23.txt
............此处省略5878个文件信息
# -*- 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...将32X32的图像转化为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进位,j代表每位的32个元素
return returnvec
def HandWritingTest(train_dirtest_dir):
labels = []
File_list = listdir(train_dir)
# 将目录内的文件按名字放入列表,使用函数解析为数字
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‘,被拆分为013txt
# 此处0即为标签数字
labels.append(fnumber)
train_mat[i:] = img2vec(‘%s/%s‘ % (train_dirfname))
# labels is label_vec,同之前的KNN代码相同,存储标签
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
# 这部分和Test模块相同,直接copy过来就好
print(“the accuracy is %f | the error_rate is %f “ %
(1- (float(error) /float(test_m))(float(error) /float(test_m))))
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 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-masterREADME.md
目录 0 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNN
文件 1867 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNDigit_recog.py
文件 634 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNFeature_scaling.py
文件 1075 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNKNN_algr.py
文件 989 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNParse_data.py
文件 1468 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNTestData.py
文件 1 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNN\__init__.py
文件 873 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNN\__main__.py
文件 26067 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdatingTestSet2.txt
目录 0 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits
目录 0 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _0.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _1.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _10.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _11.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _12.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _13.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _14.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _15.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _16.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _17.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _18.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _19.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _2.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _20.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _21.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _22.txt
文件 1056 2018-08-19 03:49 Machine-Learning-in-Action-Python3-masterch01-KNNdigits estDigits _23.txt
............此处省略5878个文件信息
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