pytorchGAN生成对抗网络实例-创新互联
我就废话不多说了,直接上代码吧!
创新互联建站是一家集网站建设,恒山企业网站建设,恒山品牌网站建设,网站定制,恒山网站建设报价,网络营销,网络优化,恒山网站推广为一体的创新建站企业,帮助传统企业提升企业形象加强企业竞争力。可充分满足这一群体相比中小企业更为丰富、高端、多元的互联网需求。同时我们时刻保持专业、时尚、前沿,时刻以成就客户成长自我,坚持不断学习、思考、沉淀、净化自己,让我们为更多的企业打造出实用型网站。import torch import torch.nn as nn from torch.autograd import Variable import numpy as np import matplotlib.pyplot as plt torch.manual_seed(1) np.random.seed(1) BATCH_SIZE = 64 LR_G = 0.0001 LR_D = 0.0001 N_IDEAS = 5 ART_COMPONENTS = 15 PAINT_POINTS = np.vstack([np.linspace(-1,1,ART_COMPONENTS) for _ in range(BATCH_SIZE)]) def artist_works(): a = np.random.uniform(1,2,size=BATCH_SIZE)[:,np.newaxis] paintings = a*np.power(PAINT_POINTS,2) + (a-1) paintings = torch.from_numpy(paintings).float() return Variable(paintings) G = nn.Sequential( nn.Linear(N_IDEAS,128), nn.ReLU(), nn.Linear(128,ART_COMPONENTS), ) D = nn.Sequential( nn.Linear(ART_COMPONENTS,128), nn.ReLU(), nn.Linear(128,1), nn.Sigmoid(), ) opt_D = torch.optim.Adam(D.parameters(),lr=LR_D) opt_G = torch.optim.Adam(G.parameters(),lr=LR_G) plt.ion() for step in range(10000): artist_paintings = artist_works() G_ideas = Variable(torch.randn(BATCH_SIZE,N_IDEAS)) G_paintings = G(G_ideas) prob_artist0 = D(artist_paintings) prob_artist1 = D(G_paintings) D_loss = - torch.mean(torch.log(prob_artist0) + torch.log(1-prob_artist1)) G_loss = torch.mean(torch.log(1 - prob_artist1)) opt_D.zero_grad() D_loss.backward(retain_variables=True) opt_D.step() opt_G.zero_grad() G_loss.backward() opt_G.step() if step % 50 == 0: plt.cla() plt.plot(PAINT_POINTS[0],G_paintings.data.numpy()[0],c='#4ad631',lw=3,label='Generated painting',) plt.plot(PAINT_POINTS[0],2 * np.power(PAINT_POINTS[0], 2) + 1,c='#74BCFF',lw=3,label='upper bound',) plt.plot(PAINT_POINTS[0],1 * np.power(PAINT_POINTS[0], 2) + 0,c='#FF9359',lw=3,label='lower bound',) plt.text(-.5,2.3,'D accuracy=%.2f (0.5 for D to converge)' % prob_artist0.data.numpy().mean(), fontdict={'size':15}) plt.text(-.5, 2, 'D score= %.2f (-1.38 for G to converge)' % -D_loss.data.numpy(), fontdict={'size': 15}) plt.ylim((0,3)) plt.legend(loc='upper right', fontsize=12) plt.draw() plt.pause(0.01) plt.ioff() plt.show()
另外有需要云服务器可以了解下创新互联scvps.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。
分享文章:pytorchGAN生成对抗网络实例-创新互联
网页网址:http://scyanting.com/article/cepcos.html