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    vÉç×Ô×߯åfrom__future__importprint__data#number1to10datamnist=input__data_sets(MNIST_data,one_hot=True)defcompute_accuracy(v_xs,v_ys):globalpredictiony_pre=(prediction,feed_dict={xs:v_xs,keep_prob:1})correct_prediction=((y_pre,1),(v_ys,1))accuracy=_mean((correct_prediction,))result=(accuracy,feed_dict={xs:v_xs,ys:v_ys,keep_prob:1})returnresultdefweight_variable(shape):initial=_normal(shape,stddev=)(initial)defbias_variable(shape):initial=(,shape=shape)(initial)defconv2d(x,W):#stride[1,x_movement,y_movement,1]#Musthavestrides[0]=strides[3]=(x,W,strides=[1,1,1,1],padding=SAME)defmax_pool_2x2(x):#stride[1,x_movement,y_movement,1]_pool(x,ksize=[1,2,2,1],strides=[1,2,2,1],padding=SAME)#defineplaceholderforinputstonetworkxs=(,[None,784])#28x28ys=(,[None,10])keep_prob=()x_image=(xs,[-1,28,28,1])#print(x_)#[n_samples,28,28,1]##conv1layer##W_conv1=weight_variable([5,5,1,32])#patch5x5,insize1,outsize32b_conv1=bias_variable([32])h_conv1=(conv2d(x_image,W_conv1)+b_conv1)#outputsize28x28x32h_pool1=max_pool_2x2(h_conv1)#outputsize14x14x32##conv2layer##W_conv2=weight_variable([5,5,32,64])#patch5x5,insize32,outsize64b_conv2=bias_variable([64])h_conv2=(conv2d(h_pool1,W_conv2)+b_conv2)#outputsize14x14x64h_pool2=max_pool_2x2(h_conv2)#outputsize7x7x64##func1layer##W_fc1=weight_variable([7*7*64,1024])b_fc1=bias_variable([1024])#[n_samples,7,7,64]-[n_samples,7*7*64]h_pool2_flat=(h_pool2,[-1,7*7*64])h_fc1=((h_pool2_flat,W_fc1)+b_fc1)h_fc1_drop=(h_fc1,keep_prob)##func2layer##W_fc2=weight_variable([1024,10])b_fc2=bias_variable([10])prediction=((h_fc1_drop,W_fc2)+b_fc2)#theerrorbetweenpredictionandrealdatacross_entropy=_mean(-_sum(ys*(prediction),reduction_indices=[1]))#losstrain_step=(1e-4).minimize(cross_entropy)sess=()#(_all_variables())foriinrange(1000):batch_xs,batch_ys=_batch(100)(train_step,feed_dict={xs:batch_xs,ys:batch_ys,keep_prob:})ifi%50==0:print(compute_accuracy(,))Ëæ×ŵü´ú´ÎÊýɾ¼õ£¬×¼È·ÂÊɾÏ£¡Ìî²¹mnistÊÇÒ»¸ö³Ã÷¿¼¶µÄÀà¡£°Ù¶ÈÔÆ°Ù¶ÈÔÆ¹©Ó¦Ç¸±¡µÄÈËÁ³Ê¶±ðЧÂʽÓÐÄ[12]£¬Èçͼ15Ëùʾ¡£

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