pytorch 使用visdom進行視覺化

相比tensorbordx, visdom重新整理更快，介面體驗也良好，首先是visdom的安裝，與普通的python庫一樣，直接pip install visdom即可

成功安裝後，在控制台下輸入python -m visdom.server

複製http://localhost:8097，輸入瀏覽器即可開啟visdom視覺化視窗

呼叫visdom主要需要如下語句：

from visdom import visdom

# your code
vis = visdom()
# vis = visdom(env = 'my window') 可接收env引數，用於標識視窗控制代碼
# your data need to be drawn

import numpy as np

import matplotlib.pyplot as plt
import torch.optim as optim
from visdom import visdom
import torch
import torch.nn as nn
num_step =
50input_size =
1output_size =
1hidden_size =
16lr =
0.01
device =
'cpu'
class
rnnnet
(nn.module)
:def
__init__
(self)
:super
(rnnnet, self)
.__init__(
)        self.rnn = nn.rnn(
input_size=input_size,
hidden_size=hidden_size,
num_layers=1,
batch_first=
true
)        self.linear = nn.linear(hidden_size, output_size)
defforward
(self, x, hidden)
:        out, hidden = self.rnn(x, hidden)
out = out.view(-1
, hidden_size)
out = self.linear(out)
out = out.unsqueeze(dim=0)
return out, hidden
if __name__ ==
'__main__'
:    rnnnet = rnnnet(
).to(device)
loss_func = nn.mseloss(
)    optimizer = optim.adam(rnnnet.parameters(
), lr=lr)
hidden = torch.zeros(1,
1, hidden_size)
global_step =
0    vis = visdom(
)# win 表徵該env下的視窗控制代碼，乙個win代表乙個視窗，視窗標題由title決定
vis.line([0
.],[
0.], win=
'train_loss'
, opts=
dict
(title=
'train loss'))
for epoch in
range
(10000):
start = np.random.randint(
3, size=1)
[0]        time_steps = np.linspace(start, start+
10, num_step)
data = np.sin(time_steps)
data = data.reshape(num_step,1)
x = torch.tensor(data[:-
1]).
float()
.view(
1, num_step -1,
1).to(device)
y = torch.tensor(data[1:
]).float()
.view(
1, num_step -1,
1).to(device)
output, hidden = rnnnet(x, hidden)
hidden = hidden.detach(
)        loss = loss_func(output, y)
optimizer.zero_grad(
)        loss.backward(
)        optimizer.step(
)        global_step +=
1        vis.line(
[loss.item()]
,[global_step]
, win=
'train_loss'
, update=
)if epoch %
100==0:
print
("iteration: {} loss: {}"
.format
(epoch, loss.item())
)

env標識的即上面的main，改變引數後可在下拉框中選擇目標視窗

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