def forward(self, z): out = self.l1(z) out = out.view(out.shape[0], 128, self.init_size, self.init_size) img = self.conv_blocks(out) return img
时间: 2023-06-26 11:08:22 浏览: 56
这段代码是一个PyTorch模型的前向传播函数。模型输入一个张量z,经过一层全连接层self.l1后,将输出的张量out通过view函数变为一个四维张量,其中out.shape[0]表示batch size,128表示通道数,self.init_size表示图像的高和宽,因为这里的模型是用来生成图像的。接下来,将这个四维张量输入卷积层self.conv_blocks中,得到生成的图像img,最终将其返回。这个模型的主要目的是生成图像,可能是一个基于GAN(生成式对抗网络)的模型。
相关问题
约瑟夫环改错class Node: def __init__(self,data): self.data=data self.next=Noneclass linklist: def __init__(self): self.head=None self.data=None def isEmpty(self): if self.head: return False else: return True def length(self): if self.isEmpty(): return 0 else: t = self.head n = 1 while t.next: if t.next == self.head: break t = t.next n = n + 1 return n def addhead(self,data): node = Node(data) if self.isEmpty(): self.head = node self.tail = self.head else: node.next = self.head self.head = node self.tail.next = self.head def addtail(self,data): node=Node(data) if self.isEmpty(): self.addhead(data) else: t=self.head n=1 l=self.length() while n<l: n=n+1 t=t.next t.next=node node.next=self.head self.tail=node def delete(self,index): if self.isEmpty(): print("The linked list is empty") else: t = self.head l = self.length() if index == 0: self.head = t.next self.tail.next = self.head elif index == l - 1: n = 1 while n < l - 1: t = t.next n = n + 1 t.next = self.head self.tail = t elif index > l - 1: print("Out of range") elif index < 0: print("Wrong operation") else: n = 1 while n < index - 1: t = t.next n = n + 1 a = t.next.next t.next = a def insert(self,data,index): l = self.length() if index == 0 or self.isEmpty(): self.addhead(data) elif index >= l: self.addtail(data) else: node = Node(data) t = self.head n = 1 while n < index - 1: t = t.next n = n + 1 a = t.next t.next = node node.next = a def search(self,a): t=self.head for i in range(a): t=t.next return t.data def form(self,datalist): self.addhead(datalist[0]) for i in range(1,len(datalist)): self.addtail(datalist[i]) t = self.head while t.next != self.head: t = t.nextn,p=map(int,input().split(' '))data=[]p=p-1for i in range(1,n+1): data.append(i)print(data)datalist=[]for i in range(len(data)): datalist.append(int(data[i]))link=linklist()link.form(datalist)a=pb=[]while link.length()>0: b.append(link.search(a)) link.delete(a) a=a+p while a>=link.length(): a=a-link.length()print(b)
改错如下:
```python
class Node:
def __init__(self, data):
self.data = data
self.next = None
class LinkList:
def __init__(self):
self.head = None
self.tail = None
def isEmpty(self):
if self.head:
return False
else:
return True
def length(self):
if self.isEmpty():
return 0
else:
t = self.head
n = 1
while t.next:
if t.next == self.head:
break
t = t.next
n += 1
return n
def addhead(self, data):
node = Node(data)
if self.isEmpty():
self.head = node
self.tail = self.head
else:
node.next = self.head
self.head = node
self.tail.next = self.head
def addtail(self, data):
node = Node(data)
if self.isEmpty():
self.addhead(data)
else:
t = self.head
n = 1
l = self.length()
while n < l:
n += 1
t = t.next
t.next = node
node.next = self.head
self.tail = node
def delete(self, index):
if self.isEmpty():
print("The linked list is empty")
else:
t = self.head
l = self.length()
if index == 0:
self.head = t.next
self.tail.next = self.head
elif index == l - 1:
n = 1
while n < l - 1:
t = t.next
n += 1
t.next = self.head
self.tail = t
elif index > l - 1:
print("Out of range")
elif index < 0:
print("Wrong operation")
else:
n = 1
while n < index:
t = t.next
n += 1
a = t.next.next
t.next = a
def insert(self, data, index):
l = self.length()
if index == 0 or self.isEmpty():
self.addhead(data)
elif index >= l:
self.addtail(data)
else:
node = Node(data)
t = self.head
n = 1
while n < index:
t = t.next
n += 1
a = t.next
t.next = node
node.next = a
def search(self, a):
t = self.head
for i in range(a):
t = t.next
return t.data
def form(self, datalist):
self.addhead(datalist[0])
for i in range(1, len(datalist)):
self.addtail(datalist[i])
t = self.head
while t.next != self.head:
t = t.next
n, p = map(int, input().split(' '))
data = [i for i in range(1, n+1)]
print(data)
datalist = []
for i in range(len(data)):
datalist.append(data[i])
link = LinkList()
link.form(datalist)
a = p-1
b = []
while link.length() > 0:
b.append(link.search(a))
link.delete(a)
a += p-1
while a >= link.length():
a -= link.length()
print(b)
```
如何·在模型训练的过程中使用L1或L2正则化方法对模型参数进行约束:class MLP(torch.nn.Module): def init(self): super(MLP, self).init() self.fc1 = torch.nn.Linear(178, 100) self.relu = torch.nn.ReLU() self.fc2 = torch.nn.Linear(100, 50) self.fc3 = torch.nn.Linear(50, 5) self.dropout = torch.nn.Dropout(p=0.1) # dropout训练 def forward(self, x): out = self.fc1(x) out = self.relu(out) out = self.fc2(out) out = self.relu(out) out = self.fc3(out) out = self.dropout(out) return out
在模型训练的过程中使用L1或L2正则化方法对模型参数进行约束可以在定义模型时,在需要约束的层后面加上正则化项。例如,在上述代码中,在需要使用L2正则化约束的全连接层fc1和fc2后面添加如下代码:
self.fc1 = torch.nn.Linear(178, 100)
self.fc1.weight_decay = 0.01 # 加上L2正则化项
self.relu = torch.nn.ReLU()
self.fc2 = torch.nn.Linear(100, 50)
self.fc2.weight_decay = 0.01 # 加上L2正则化项
self.fc3 = torch.nn.Linear(50, 5)
self.dropout = torch.nn.Dropout(p=0.1)
其中, weight_decay 参数即为 L2 正则化项的系数,可以根据需求进行调整。对于L1正则化,同样可以在需要约束的层后面添加如下代码:
self.fc1 = torch.nn.Linear(178, 100)
self.fc1.l1_regularizer = 0.01 # 加上L1正则化项
self.relu = torch.nn.ReLU()
self.fc2 = torch.nn.Linear(100, 50)
self.fc2.l1_regularizer = 0.01 # 加上L1正则化项
self.fc3 = torch.nn.Linear(50, 5)
self.dropout = torch.nn.Dropout(p=0.1)
其中, l1_regularizer 参数即为 L1 正则化项的系数,同样可以根据需要进行调整。这样,在训练过程中,模型会自动加上正则化约束,进而提高模型的泛化能力和鲁棒性。