attention_score = torch.matmul(Query, Key.transpose(-1, -2)) / math.sqrt(self.head_size)

时间: 2024-02-26 22:53:47 浏览: 14
这是一个计算attention得分的公式，其中Query和Key都是输入的张量，transpose(-1, -2)是对Key的最后两个维度进行转置，math.sqrt(self.head_size)是对头数进行平方根处理，head_size是头的数量。这个公式的作用是计算Query和Key之间的相似度，并用得分对Value进行加权平均，得到最终的输出。这是Transformer模型中Multi-Head Attention的核心计算过程。
相关问题

attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2))

这是一个用于计算self-attention中的注意力分数矩阵的代码，其中query_layer和key_layer是通过对输入序列进行线性变换得到的查询矩阵和键矩阵。这个矩阵乘法操作可以理解为将query_layer中的每个向量与key_layer中的每个向量进行点积，从而得到一个注意力分数矩阵。注意力分数矩阵的每个元素表示查询向量与对应键向量的相似度，越大表示两个向量越相关，越小表示两个向量越不相关。

以下代码存在无法求导反向传播的bug，请你修改：# 反向LSTM input_backward = torch.flip(input, [0]) outputs_backward = [] for t in range(input_backward.size(0)): x = input_backward[t] i = torch.sigmoid(torch.matmul(x, self.W_i_backward) + torch.matmul(h_backward[-1], self.U_i_backward) + self.b_i_backward) f = torch.sigmoid(torch.matmul(x, self.W_f_backward) + torch.matmul(h_backward[-1], self.U_f_backward) + self.b_f_backward) c_tilde = torch.tanh(torch.matmul(x, self.W_c_backward) + torch.matmul(h_backward[-1], self.U_c_backward) + self.b_c_backward) c_backward[-1] = f * c_backward[-1] + i * c_tilde o = torch.matmul(x, self.W_o_backward) + torch.matmul(h_backward[-1], self.U_o_backward) + self.b_o_backward o = torch.sigmoid(o) h_backward[-1] = o * torch.tanh(c_backward[-1]) outputs_backward.append(h_backward[-1]) outputs_backward = torch.flip(torch.stack(outputs_backward), [0])

这段代码看起来没有明显的无法求导反向传播的 bug，但是如果存在问题的话可能是因为某些操作的输入没有进行 requires_grad=True 的设置。可以尝试添加以下代码，保证所有涉及到反向传播的张量都设置了 requires_grad=True： ``` input_backward.requires_grad_() self.W_i_backward.requires_grad_() self.U_i_backward.requires_grad_() self.b_i_backward.requires_grad_() self.W_f_backward.requires_grad_() self.U_f_backward.requires_grad_() self.b_f_backward.requires_grad_() self.W_c_backward.requires_grad_() self.U_c_backward.requires_grad_() self.b_c_backward.requires_grad_() self.W_o_backward.requires_grad_() self.U_o_backward.requires_grad_() self.b_o_backward.requires_grad_() ``` 另外，如果在模型训练时发现该部分无法进行反向传播，可以尝试将该部分的代码放到 `torch.no_grad()` 中，避免该部分的梯度被累加。 ``` with torch.no_grad(): input_backward = torch.flip(input, [0]) outputs_backward = [] for t in range(input_backward.size(0)): x = input_backward[t] i = torch.sigmoid(torch.matmul(x, self.W_i_backward) + torch.matmul(h_backward[-1], self.U_i_backward) + self.b_i_backward) f = torch.sigmoid(torch.matmul(x, self.W_f_backward) + torch.matmul(h_backward[-1], self.U_f_backward) + self.b_f_backward) c_tilde = torch.tanh(torch.matmul(x, self.W_c_backward) + torch.matmul(h_backward[-1], self.U_c_backward) + self.b_c_backward) c_backward[-1] = f * c_backward[-1] + i * c_tilde o = torch.matmul(x, self.W_o_backward) + torch.matmul(h_backward[-1], self.U_o_backward) + self.b_o_backward o = torch.sigmoid(o) h_backward[-1] = o * torch.tanh(c_backward[-1]) outputs_backward.append(h_backward[-1]) outputs_backward = torch.flip(torch.stack(outputs_backward), [0]) ```

相关推荐

whl

torch-1.10.2-cp36-cp36m-manylinux1_x86_64.whl

torch-1.10.2-cp36-cp36m-manylinux1_x86_64.whltorch-1.10.2-cp36-cp36m-manylinux1_x86_64.whltorch-1.10.2-cp36-cp36m-manylinux1_x86_64.whltorch-1.10.2-cp36-cp36m-manylinux1_x86_64.whltorch-1.10.2-cp36-cp...
whl

torch-1.8.0-cp38-cp38-manylinux1_x86_64.whl

torch-1.8.0-cp38-cp38-manylinux1_x86_64.whl
whl

torch-1.3.0.post2-cp37-none-macosx_10_9_x86_64.whl

torch-1.3.0.post2-cp37-none-macosx_10_9_x86_64.whl用于离线安装torch

以下代码存在不可以自动反向传播的bug，为什么： # 前向LSTM outputs_forward = [] for t in range(input.size(0)): x = input[t] i = torch.sigmoid(torch.matmul(x, self.W_i_forward) + torch.matmul(h_forward[-1], self.U_i_forward) + self.b_i_forward) f = torch.sigmoid(torch.matmul(x, self.W_f_forward) + torch.matmul(h_forward[-1], self.U_f_forward) + self.b_f_forward) c_tilde = torch.tanh(torch.matmul(x, self.W_c_forward) + torch.matmul(h_forward[-1], self.U_c_forward) + self.b_c_forward) c_forward[-1] = f * c_forward[-1] + i * c_tilde o = torch.matmul(x, self.W_o_forward) + torch.matmul(h_forward[-1], self.U_o_forward) + self.b_o_forward o = torch.sigmoid(o) h_forward[-1] = o * torch.tanh(c_forward[-1]) outputs_forward.append(h_forward[-1])

i = torch.sigmoid(torch.matmul(x, self.W_i_forward) + torch.matmul(h_forward_new[-1], self.U_i_forward) + self.b_i_forward) f = torch.sigmoid(torch.matmul(x, self.W_f_forward) + torch.matmul(h_...

Q_K_sample = torch.matmul(Q.unsqueeze(-2), K_sample.transpose(-2, -1)).squeeze(-2)

接下来，torch.matmul(Q.unsqueeze(-2), K_sample.transpose(-2, -1)) 利用矩阵乘法操作对两个张量进行相乘，得到的结果形状为 (B, H, 1, L_Q, L_K)。 最后，squeeze(-2) 会将结果张量的倒数第二个维度大小为...

这段代码有什么错误def forward(self,x): num_nodes = x.size(1) # sub_graph size batch_size = x.size(0) W = torch.cat([self.W] * batch_size, dim=0) representation = torch.matmul(x, W) r_sum = torch.sum(representation, dim=-1, keepdim=False) b = torch.zeros([batch_size, num_nodes]) b = Variable(b) one = torch.ones_like(r_sum) zero = torch.zeros_like(r_sum) label = torch.clone(r_sum) label = torch.where(label == 0, one, zero) b.data.masked_fill_(label.bool(), -float('inf')) num_iterations = 3 for i in range(num_iterations): c = torch.nn.functional.softmax(b, dim=-1) weight_coeff = c.unsqueeze(dim=1) representation_global = torch.matmul(weight_coeff, representation) representation_global_all = torch.cat([representation_global] * num_nodes, dim=1) representation_similarity = torch.nn.functional.cosine_similarity(representation, representation_global_all, dim=-1) representation_similarity.data.masked_fill_(label.bool(), -float('inf')) b = representation_similarity return representation_global.squeeze(dim=1)

representation_global = torch.matmul(weight_coeff, representation) representation_global_all = torch.cat([representation_global] * num_nodes, dim=1) representation_similarity = torch.nn.functional....

def forward(self, input_question, input_answer): input_question.requires_grad = True question_embed = torch.nn.Parameter(self.embedding(input_question), requires_grad=True) answer_embed = torch.nn.Parameter(self.embedding(input_answer), requires_grad=True) _, question_hidden = self.encoder(question_embed) answer_outputs, _ = self.encoder(answer_embed, question_hidden) attention_weights = self.attention(answer_outputs).squeeze(dim=-1) attention_weights = torch.softmax(attention_weights, dim=1) context_vector = torch.bmm(attention_weights.unsqueeze(dim=1), answer_outputs).squeeze(dim=1) logits = self.decoder(context_vector) return logits

context_vector = torch.bmm(attention_weights.unsqueeze(dim=1), answer_outputs).squeeze(dim=1) logits = self.decoder(context_vector) return logits 请确保在使用loss.backward()之前，所有需要...

class SelfAttention(nn.Module): def __init__(self, input_size=1, num_heads=1): super(SelfAttention, self).__init__() self.num_heads = 1 self.head_size = 1 self.query = nn.Linear(1, 1) self.key = nn.Linear(1, 1) self.value = nn.Linear(1, 1) self.out = nn.Linear(1, 1) def forward(self, inputs): batch_size, seq_len, input_size = inputs.size() # 128 706 1 # Split inputs into num_heads inputs = inputs.view(batch_size, seq_len, self.num_heads, self.head_size) inputs = inputs.permute(0, 2, 1, 3).contiguous() queries = self.query(inputs).view(batch_size, self.num_heads, seq_len, self.head_size) keys = self.key(inputs).view(batch_size, self.num_heads, seq_len, self.head_size) values = self.value(inputs).view(batch_size, self.num_heads, seq_len, self.head_size) # Compute attention scores scores = torch.matmul(queries, keys.permute(0, 1, 3, 2)) scores = scores / (self.head_size ** 0.5) attention = F.softmax(scores, dim=-1) # Apply attention weights to values attention_output = torch.matmul(attention, values) attention_output = attention_output.view(batch_size, seq_len, input_size) # Apply output linear layer output = self.out(attention_output) return output 解释一下代码 其中num_heads=1

这段代码定义了一个自注意力模块（Self-Attention），用于在神经网络中实现自注意力机制。自注意力机制在自然语言处理领域非常常见，它可以根据当前输入中的关键词来动态地调整权重，使得模型可以更好地捕捉句子中的...

class ACmix(nn.Module): def __init__(self, in_planes, out_planes, kernel_att=7, head=4, kernel_conv=3, stride=1, dilation=1): super(ACmix, self).__init__() self.in_planes = in_planes self.out_planes = out_planes self.head = head self.kernel_att = kernel_att self.kernel_conv = kernel_conv self.stride = stride self.dilation = dilation self.rate1 = torch.nn.Parameter(torch.Tensor(1)) self.rate2 = torch.nn.Parameter(torch.Tensor(1)) self.head_dim = self.out_planes // self.head self.conv1 = nn.Conv2d(in_planes, out_planes, kernel_size=1) self.conv2 = nn.Conv2d(in_planes, out_planes, kernel_size=1) self.conv3 = nn.Conv2d(in_planes, out_planes, kernel_size=1) self.conv_p = nn.Conv2d(2, self.head_dim, kernel_size=1) self.padding_att = (self.dilation * (self.kernel_att - 1) + 1) // 2 self.pad_att = torch.nn.ReflectionPad2d(self.padding_att) self.unfold = nn.Unfold(kernel_size=self.kernel_att, padding=0, stride=self.stride) self.softmax = torch.nn.Softmax(dim=1) self.fc = nn.Conv2d(3 * self.head, self.kernel_conv * self.kernel_conv, kernel_size=1, bias=False) self.dep_conv = nn.Conv2d(self.kernel_conv * self.kernel_conv * self.head_dim, out_planes, kernel_size=self.kernel_conv, bias=True, groups=self.head_dim, padding=1, stride=stride) self.reset_parameters()逐行解释代码

self.rate2 = torch.nn.Parameter(torch.Tensor(1)) self.head_dim = self.out_planes // self.head 将输入的参数保存到类的成员变量中，其中rate1和rate2是需要学习的参数，用于调整注意力机制中的权重。 ...

class MultiHeadAttentionGraph(nn.Module): def __init__(self, n_head, d_model, d_k, d_v, dropout=0.1): super().__init__() self.n_head = n_head self.d_model = d_model self.d_k = d_k self.d_v = d_v self.W_Q = nn.Linear(d_model, n_head*d_k) # account for the fact that the relational edge information has double # the length self.W_K = nn.Linear(d_model*2, n_head*d_k) self.W_V = nn.Linear(d_model*2, n_head*d_v) self.W_O = nn.Linear(n_head*d_v, d_model) self.softmax = nn.Softmax(dim=-1) self.layer_norm = nn.LayerNorm(d_model) self.dropout = nn.Dropout(dropout) def forward(self, nodes, edges): n_batch, n_nodes, n_neighbors = edges.shape[:3] Q = self.W_Q(nodes).view([n_batch, n_nodes, 1, self.n_head, 1, self.d_k]) K = self.W_K(edges).view([n_batch, n_nodes, n_neighbors, self.n_head, self.d_k, 1]) attention = torch.matmul(Q, K).view([n_batch, n_nodes, n_neighbors, self.n_head]).transpose(-2,-1) attention = attention /np.sqrt(self.d_k) attention = self.softmax(attention) V = self.W_V(edges).view([n_batch, n_nodes, n_neighbors, self.n_head, self.d_v]).transpose(2,3) attention = attention.unsqueeze(-2) output = torch.matmul(attention, V).view([n_batch, n_nodes, self.d_v*self.n_head]) output = self.W_O(output) output = self.dropout(output) output = self.layer_norm(output + nodes) attention = attention.squeeze(-2).transpose(-2,-1) return output, attention

接着使用torch.matmul函数计算注意力权重与V的加权和，并将结果维度调整为(batch_size, num_nodes, n_head*d_v)，通过全连接层W_O得到输出特征。最后使用Dropout层和LayerNorm层对输出特征进行处理，得到最终的节点...

features_list = list(vgg19.features.children()) self.conv2_2 = torch.nn.Sequential(*features_list[:13]) self.conv3_4 = torch.nn.Sequential(*features_list[13:26]) self.conv4_4 = torch.nn.Sequential(*features_list[26: 39]) self.conv5_4 = torch.nn.Sequential(*features_list[39:-1]) self.tail_layer = features_list[-1] self.fc_layers = list(vgg19.classifier.children())[:-2] self.fc_layers = torch.nn.Sequential(*list(self.fc_layers)) self.extract_0 = torch.nn.Sequential( torch.nn.MaxPool2d(kernel_size=8, stride=8), torch.nn.Conv2d(128, self.k, kernel_size=1, stride=1) ) self.extract_1 = torch.nn.Sequential( torch.nn.MaxPool2d(kernel_size=4, stride=4), torch.nn.Conv2d(256, self.k, kernel_size=1, stride=1) )self.extract_2 = torch.nn.Sequential( torch.nn.MaxPool2d(kernel_size=2, stride=2), torch.nn.Conv2d(512, self.k, kernel_size=1, stride=1) ) self.extract_3 = torch.nn.Sequential( torch.nn.Conv2d(512, self.k, kernel_size=1, stride=1) ) self.fc0 = torch.nn.Linear(196, 1, bias=True) self.fc1 = torch.nn.Linear(196, 1, bias=True) self.fc2 = torch.nn.Linear(196, 1, bias=True) self.fc3 = torch.nn.Linear(196, 1, bias=True) self.fc4 = torch.nn.Linear(4096, 2 * k, bias=True) self.bn1 = torch.nn.BatchNorm1d(k) self.bn2 = torch.nn.BatchNorm1d(k) weight_init(self.fc0, self.fc1, self.fc2, self.fc3, self.fc4)

- self.extract_2 = torch.nn.Sequential(torch.nn.MaxPool2d(kernel_size=2, stride=2), torch.nn.Conv2d(512, self.k, kernel_size=1, stride=1))：将 conv4_4 层的输出进行最大池化和卷积操作，以提取更高级别...

import torchimport torch.nn as nnclass MultiHeadAttention(nn.Module): def __init__(self, d_model, num_heads): super(MultiHeadAttention, self).__init__() self.num_heads = num_heads self.d_model = d_model assert d_model % self.num_heads == 0 self.depth = d_model // self.num_heads self.Wq = nn.Linear(d_model, d_model) self.Wk = nn.Linear(d_model, d_model) self.Wv = nn.Linear(d_model, d_model) self.fc = nn.Linear(d_model, d_model) def scaled_dot_product_attention(self, Q, K, V, mask=None): d_k = Q.size(-1) scores = torch.matmul(Q, K.transpose(-1, -2)) / torch.sqrt(torch.tensor(d_k, dtype=torch.float32)) if mask is not None: scores = scores.masked_fill(mask == 0, -1e9) attention = torch.softmax(scores, dim=-1) output = torch.matmul(attention, V) return output, attention def split_heads(self, x, batch_size): x = x.view(batch_size, -1, self.num_heads, self.depth) return x.permute(0, 2, 1, 3) def forward(self, Q, K, V, mask=None): batch_size = Q.size(0) Q = self.Wq(Q) K = self.Wk(K) V = self.Wv(V) Q = self.split_heads(Q, batch_size) K = self.split_heads(K, batch_size) V = self.split_heads(V, batch_size) scaled_attention, attention = self.scaled_dot_product_attention(Q, K, V, mask) scaled_attention = scaled_attention.permute(0, 2, 1, 3).contiguous() scaled_attention = scaled_attention.view(batch_size, -1, self.d_model) output = self.fc(scaled_attention) return output, attention

上述代码是一个用PyTorch实现的多头注意力机制（Multi-Head Attention）的模块，该模块可以被用来构建神经网络模型。它的参数有： - d_model：表示输入向量的维度，也就是embedding的维度。 - num_heads：表示...

用tensorflow的layers.Layer模块改写class SelfAttention(nn.Module): def init(self,in_c,out_c,fm_sz,pos_bias = False): super(SelfAttention,self).init() self.w_q = nn.Conv2d(in_channels = in_c,out_channels = out_c,kernel_size = 1) self.w_k = nn.Conv2d(in_channels = in_c,out_channels = out_c,kernel_size = 1) self.w_v = nn.Conv2d(in_channels = in_c,out_channels = out_c,kernel_size = 1) self.pos_code = self.__getPosCode(fm_sz,out_c) self.softmax = nn.Softmax(dim = 2) self.pos_bias = pos_bias def __getPosCode(self,fm_sz,out_c): x = [] for i in range(fm_sz): x.append([np.sin,np.cos][i % 2](1 / (10000 ** (i // 2 / fm_sz)))) x = torch.from_numpy(np.array([x])).float() return torch.cat([(x + x.t()).unsqueeze(0) for i in range(out_c)]) def forward(self,x): q,k,v = self.w_q(x),self.w_k(x),self.w_v(x) pos_code = torch.cat([self.pos_code.unsqueeze(0) for i in range(x.shape[0])]).to(x.device) if self.pos_bias: att_map = torch.matmul(q,k.permute(0,1,3,2)) + pos_code else: att_map = torch.matmul(q,k.permute(0,1,3,2)) + torch.matmul(q,pos_code.permute(0,1,3,2)) am_shape = att_map.shape att_map = self.softmax(att_map.view(am_shape[0],am_shape[1],am_shape[2] * am_shape[3])).view(am_shape) return att_map * v

att_map = tf.matmul(q, tf.transpose(k, perm=[0, 1, 3, 2])) + tf.matmul(q, tf.transpose(pos_code, perm=[0, 1, 3, 2])) am_shape = tf.shape(att_map) att_map = self.softmax(tf.reshape(att_map, [am_...

class SelfAttention(nn.Module): def init(self, input_size=1, num_heads=1): super(SelfAttention, self).init() self.num_heads = 1 self.head_size = 1 self.query = nn.Linear(1, 1) self.key = nn.Linear(1, 1) self.value = nn.Linear(1, 1) self.out = nn.Linear(1, 1) def forward(self, inputs): batch_size, seq_len, input_size = inputs.size() # 128 706 1 # Split inputs into num_heads inputs = inputs.view(batch_size, seq_len, self.num_heads, self.head_size) inputs = inputs.permute(0, 2, 1, 3).contiguous() queries = self.query(inputs).view(batch_size, self.num_heads, seq_len, self.head_size) keys = self.key(inputs).view(batch_size, self.num_heads, seq_len, self.head_size) values = self.value(inputs).view(batch_size, self.num_heads, seq_len, self.head_size) # Compute attention scores scores = torch.matmul(queries, keys.permute(0, 1, 3, 2)) scores = scores / (self.head_size ** 0.5) attention = F.softmax(scores, dim=-1) # Apply attention weights to values attention_output = torch.matmul(attention, values) attention_output = attention_output.view(batch_size, seq_len, input_size) # Apply output linear layer output = self.out(attention_output) return output class DenseAttentionLayer(nn.Module): def init(self, input_size, return_alphas=True, name=None, num_heads=1): super(DenseAttentionLayer, self).init() self.return_alphas = return_alphas self.name = name self.num_heads = num_heads # If input comes with a hidden dimension (e.g. 5 features per gene) # print("len(input_size): ",len(input_size)) # 2 if len(input_size) == 3: self.feature_collapse = nn.Linear(input_size[-1], 1) input_size = (input_size[0], input_size[1]) self.attention = SelfAttention(input_size=1, num_heads=1) def forward(self, inputs): print("inputs.shape: ",inputs.shape) # torch.Size([128, 706]) output = self.attention(inputs) if self.return_alphas: alphas = F.softmax(output, dim=1) return torch.mul(inputs, alphas), alphas else: return output 对于上述代码其中numheads=1 headsize=1

然后，通过三个线性层（query、key、value）将输入映射到查询（queries）、键（keys）和值（values）空间，并计算注意力分数（scores），再通过softmax函数计算权重（attention），最后将权重与值相乘得到输出...

检查以下LSTM正向传播的代码矩阵大小错误的地方：# 前向LSTM outputs_forward = [] h_forward_new = torch.from_numpy(h_forward) c_forward_new = torch.from_numpy(c_forward) print("h_forward_new:", h_forward.shape) for t in range(input.size(0)): x = input[t] i = torch.sigmoid(torch.matmul(x, self.W_i_forward) + torch.matmul(h_forward_new[-1], self.U_i_forward) + self.b_i_forward) f = torch.sigmoid(torch.matmul(x, self.W_f_forward) + torch.matmul(h_forward_new[-1], self.U_f_forward) + self.b_f_forward) c_tilde = torch.tanh(torch.matmul(x, self.W_c_forward) + torch.matmul(h_forward_new[-1], self.U_c_forward) + self.b_c_forward) c_forward_new = f * c_forward_new[-1] + i * c_tilde o = torch.matmul(x, self.W_o_forward) + torch.matmul(h_forward_new[-1], self.U_o_forward) + self.b_o_forward o = torch.sigmoid(o) h_forward_new = o * torch.tanh(c_forward_new[-1]) outputs_forward.append(h_forward_new) h_forward_new = torch.cat([h_forward_new[1:], h_forward_new[-1].unsqueeze(0)]) c_forward_new = torch.cat([c_forward_new[1:], c_forward_new[-1].unsqueeze(0)]) h_forward = h_forward_new c_forward = c_forward_new

1. 在打印语句 print("h_forward_new:", h_forward.shape) 中，如果 h_forward 的形状无法满足 print 函数的要求，就会出现矩阵大小错误。你应该检查 h_forward 的形状是否正确，并确保它与你的预期相符。 ...

class DropBlock_Ske(nn.Module): def __init__(self, num_point, block_size=7): super(DropBlock_Ske, self).__init__() self.keep_prob = 0.0 self.block_size = block_size self.num_point = num_point self.fc_1 = nn.Sequential( nn.Linear(in_features=25, out_features=25, bias=True), nn.ReLU(inplace=True), nn.Linear(in_features=25, out_features=25, bias=True), ) self.fc_2 = nn.Sequential( nn.Linear(in_features=25, out_features=25, bias=True), nn.ReLU(inplace=True), nn.Linear(in_features=25, out_features=25, bias=True), ) self.sigmoid = nn.Sigmoid() def forward(self, input, keep_prob, A): # n,c,t,v self.keep_prob = keep_prob if not self.training or self.keep_prob == 1: return input n, c, t, v = input.size() input_attention_mean = torch.mean(torch.mean(input, dim=2), dim=1).detach() # 32 25 input_attention_max = torch.max(input, dim=2)[0].detach() input_attention_max = torch.max(input_attention_max, dim=1)[0] # 32 25 avg_out = self.fc_1(input_attention_mean) max_out = self.fc_2(input_attention_max) out = avg_out + max_out input_attention_out = self.sigmoid(out).view(n, 1, 1, self.num_point) input_a = input * input_attention_out input_abs = torch.mean(torch.mean( torch.abs(input_a), dim=2), dim=1).detach() input_abs = input_abs / torch.sum(input_abs) * input_abs.numel() gamma = 0.024 M_seed = torch.bernoulli(torch.clamp( input_abs * gamma, min=0, max=1.0)).to(device=input.device, dtype=input.dtype) M = torch.matmul(M_seed, A) M[M > 0.001] = 1.0 M[M < 0.5] = 0.0 mask = (1 - M).view(n, 1, 1, self.num_point) return input * mask * mask.numel() / mask.sum()

然后，使用Sigmoid激活函数对out进行处理，得到一个形状为(n, 1, 1, num_point)的张量input_attention_out。将input_attention_out与输入张量input相乘得到input_a。 接下来，计算input_a的绝对值的平均值，并将其...
whl

torch-1.1.0-cp36-cp36m-manylinux1_x86_64.whl

针对64位linux的pyTorch安装文件，依赖python3.6，pyTorch 1.1.0版本。有需要的可以下载

最新推荐

recommend-type

torch-1.7.1+cu110-cp37-cp37m-linux_x86_64.whl离线安装包linux系统x86_64

torch-1.7.1+cu110-cp37-cp37m-linux_x86_64.whl torchvision-0.8.2+cu110-cp37-cp37m-linux_x86_64.whl 由于超过1G无法上传，给的是百度云链接！！！！！需自行下载
recommend-type

六首页数字藏品NFT交易网React NextJS网站模板 六首页数字藏品nft交易网反应NextJS网站模板

六首页数字藏品NFT交易网React NextJS网站模板 六首页数字藏品nft交易网反应NextJS网站模板
recommend-type

wireshark安装教程入门

wireshark安装教程入门
recommend-type

基于C++负数据库的隐私保护在线医疗诊断系统

【作品名称】：基于C++负数据库的隐私保护在线医疗诊断系统 【适用人群】：适用于希望学习不同技术领域的小白或进阶学习者。可作为毕设项目、课程设计、大作业、工程实训或初期项目立项。 【项目介绍】： 基于负数据库的隐私保护在线医疗诊断系统 NDBMedicalSystem 客户端及服务器端 本项目是在保护用户隐私的前提下，完成了对新冠肺炎、乳腺癌、眼疾等多种疾病的智能诊断。
recommend-type

zigbee-cluster-library-specification

最新的zigbee-cluster-library-specification说明文档。
recommend-type

管理建模和仿真的文件

管理Boualem Benatallah引用此版本：布阿利姆·贝纳塔拉。管理建模和仿真。约瑟夫-傅立叶大学-格勒诺布尔第一大学，1996年。法语。NNT：电话：00345357HAL ID：电话：00345357https://theses.hal.science/tel-003453572008年12月9日提交HAL是一个多学科的开放存取档案馆，用于存放和传播科学研究论文，无论它们是否被公开。论文可以来自法国或国外的教学和研究机构，也可以来自公共或私人研究中心。L’archive ouverte pluridisciplinaire
recommend-type

实现实时数据湖架构：Kafka与Hive集成

![实现实时数据湖架构：Kafka与Hive集成](https://img-blog.csdnimg.cn/img_convert/10eb2e6972b3b6086286fc64c0b3ee41.jpeg) # 1. 实时数据湖架构概述** 实时数据湖是一种现代数据管理架构，它允许企业以低延迟的方式收集、存储和处理大量数据。与传统数据仓库不同，实时数据湖不依赖于预先定义的模式，而是采用灵活的架构，可以处理各种数据类型和格式。这种架构为企业提供了以下优势： - **实时洞察：**实时数据湖允许企业访问最新的数据，从而做出更明智的决策。 - **数据民主化：**实时数据湖使各种利益相关者都可
recommend-type

2． 通过python绘制y=e-xsin(2πx)图像

可以使用matplotlib库来绘制这个函数的图像。以下是一段示例代码： ```python import numpy as np import matplotlib.pyplot as plt def func(x): return np.exp(-x) * np.sin(2 * np.pi * x) x = np.linspace(0, 5, 500) y = func(x) plt.plot(x, y) plt.xlabel('x') plt.ylabel('y') plt.title('y = e^{-x} sin(2πx)') plt.show() ``` 运行这段
recommend-type

JSBSim Reference Manual

JSBSim参考手册，其中包含JSBSim简介，JSBSim配置文件xml的编写语法，编程手册以及一些应用实例等。其中有部分内容还没有写完，估计有生之年很难看到完整版了，但是内容还是很有参考价值的。
recommend-type

"互动学习：行动中的多样性与论文攻读经历"

多样性她- 事实上SCI NCES你的时间表ECOLEDO C Tora SC和NCESPOUR l’Ingén学习互动，互动学习以行动为中心的强化学习学会互动，互动学习，以行动为中心的强化学习计算机科学博士论文于2021年9月28日在Villeneuve d'Asq公开支持马修·瑟林评审团主席法布里斯·勒菲弗尔阿维尼翁大学教授论文指导奥利维尔·皮耶昆谷歌研究教授：智囊团论文联合主任菲利普·普雷教授，大学。里尔/CRISTAL/因里亚报告员奥利维耶·西格德索邦大学报告员卢多维奇·德诺耶教授，Facebook /索邦大学审查员越南圣迈IMT Atlantic高级讲师邀请弗洛里安·斯特鲁布博士，Deepmind对于那些及时看到自己错误的人...3谢谢你首先，我要感谢我的两位博士生导师Olivier和Philippe。奥利维尔，"站在巨人的肩膀上"这句话对你来说完全有意义了。从科学上讲，你知道在这篇论文的（许多）错误中，你是我可以依