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mnist手寫字體識別之隨機森林,包含了python代碼,本科實驗的作業(yè),實現(xiàn)了隨即森科算法的手寫字體識別,含mnist數(shù)據(jù)集,報告基本要求都有

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代碼片段和文件信息

import?os
import?struct
from?array?import?array
import?tensorflow?as?tf
old_v?=?tf.logging.get_verbosity()
tf.logging.set_verbosity(tf.logging.ERROR)
from?tensorflow.examples.tutorials.mnist?import?input_data
mnist?=?input_data.read_data_sets(“MNIST_data/“?one_hot=True)
tf.logging.set_verbosity(old_v)

class?MNIST(object):
????def?__init__(self?path=‘.‘):
????????self.path?=?path

????????self.test_img_fname?=?‘t10k-images.idx3-ubyte‘
????????self.test_lbl_fname?=?‘t10k-labels.idx1-ubyte‘

????????self.train_img_fname?=?‘train-images.idx3-ubyte‘
????????self.train_lbl_fname?=?‘train-labels.idx1-ubyte‘
????????print(‘Data?Loaded?from?MNIST‘)

????????self.test_images?=?[]
????????self.test_labels?=?[]

????????self.train_images?=?[]
????????self.train_labels?=?[]

????def?load_testing(self):
????????ims?labels?=?self.load(os.path.join(self.path?self.test_img_fname)
????????????????????????????????os.path.join(self.path?self.test_lbl_fname))

????????self.test_images?=?ims
????????self.test_labels?=?labels

????????return?ims?labels

????def?load_training(self):
????????ims?labels?=?self.load(os.path.join(self.path?self.train_img_fname)?os.path.join(self.path?self.
????????train_lbl_fname))

????????self.train_images?=?ims
????????self.train_labels?=?labels

????????return?ims?labels

????@classmethod
????def?load(cls?path_img?path_lbl):
????????with?open(path_lbl?‘rb‘)?as?file:
????????????magic?size?=?struct.unpack(“>II“?file.read(8))
????????????if?magic?!=?2049:
????????????????raise?ValueError(‘Magic?number?mismatch?expected?2049‘
?????????????????????????????????‘got?{}‘.format(magic))

????????????labels?=?array(“B“?file.read())

????????with?open(path_img?‘rb‘)?as?file:
????????????magic?size?rows?cols?=?struct.unpack(“>IIII“?file.read(16))
????????????if?magic?!=?2051:
????????????????raise?ValueError(‘Magic?number?mismatch?expected?2051‘
?????????????????????????????????‘got?{}‘.format(magic))

????????????image_data?=?array(“B“?file.read())

????????images?=?[]
????????for?i?in?range(size):
????????????images.append([0]?*rows*cols)

????????for?i?in?range(size):
????????????images[i][:]?=?image_data[i*rows*cols:(i?+?1)*rows*cols]

????????return?images?labels

????@classmethod
????def?display(cls?img?width=28?threshold=200):
????????render?=?‘‘
????????for?i?in?range(len(img)):
????????????if?i?%?width?==?0:
????????????????render?+=?‘\n‘
????????????if?img[i]?>?threshold:
????????????????render?+=?‘@‘
????????????else:
????????????????render?+=?‘.‘
????????return?render

mnist?=?MNIST()

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-06-25?22:47??作業(yè)五?隨機森林\
?????文件???155566481??2019-06-10?20:24??作業(yè)五?隨機森林\MNIST_RFC_pca.pickle
?????目錄???????????0??2019-06-21?12:45??作業(yè)五?隨機森林\MNIST_data\
?????文件?????1648877??2019-06-10?15:18??作業(yè)五?隨機森林\MNIST_data\t10k-images-idx3-ubyte.gz
?????文件?????7840016??1998-01-26?23:07??作業(yè)五?隨機森林\MNIST_data\t10k-images.idx3-ubyte
?????文件????????4542??2019-06-10?15:18??作業(yè)五?隨機森林\MNIST_data\t10k-labels-idx1-ubyte.gz
?????文件???????10008??1998-01-26?23:07??作業(yè)五?隨機森林\MNIST_data\t10k-labels.idx1-ubyte
?????文件?????9912422??2019-06-10?15:18??作業(yè)五?隨機森林\MNIST_data\train-images-idx3-ubyte.gz
?????文件????47040016??1996-11-18?23:36??作業(yè)五?隨機森林\MNIST_data\train-images.idx3-ubyte
?????文件???????28881??2019-06-10?15:18??作業(yè)五?隨機森林\MNIST_data\train-labels-idx1-ubyte.gz
?????文件???????60008??1996-11-18?23:36??作業(yè)五?隨機森林\MNIST_data\train-labels.idx1-ubyte
?????目錄???????????0??2019-06-21?12:45??作業(yè)五?隨機森林\__pycache__\
?????文件????????2568??2019-06-10?15:51??作業(yè)五?隨機森林\__pycache__\mnist_loader.cpython-37.pyc
?????文件????????2659??2019-06-10?15:50??作業(yè)五?隨機森林\mnist_loader.py
?????文件????????1784??2019-06-10?15:48??作業(yè)五?隨機森林\隨機森林1.py

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