## PyTorch ## RNN Layer使用 主讲人：龙良曲 ## Folded model [batch, feature len]@[hidden len, feature len] $ ^{T} $ +[batch, hidden len]@[hidden len, hidden len] $ ^{T} $ [0,0,0 ... ] $$ x_{t}@w_{xh} + h_{t}@w_{hh} In [13]: rnn=nn.RNN(100, 10) In [12]: rnn._parameters.keys() Out[12]: odict_keys(['weight_ih_10', 'weight_hh_10', 'bias_ih_10', 'bias_hh_10']) In [15]: rnn.weight_hh_10 shape, rnn.weight_ih_10.shape Out[15]: (torch.Size([10, 10]), torch.Size([10, 10])) In [16]: rnn.bias_hh_10.shape, rnn.bias_ih_10.shape Out[16]: (torch.Size([10]), torch.Size([10])) ### nn.RNN ## ___init___

1})\\y_{t}=W_{O}h_{t}\end{aligned} $$ $$ \begin{array}{c}y\\ \xrightarrow{RNN}y\\ \xrightarrow{RNN}y\\ \xrightarrow{RNN}y\\ x_{0}\\ x_{1}\\ x_{2}\end{array} $$ $$ \frac{\partial E_{t}}{\partial h_{k}}{\partial h_{1}}=\prod_{i}^{k}diag(f^{\prime}(W_{I}x_{i}+W_{R}h_{i-1}))W_{R} $$ ## 下一课时 RNN Layer使用 ## Thank You

## PyTorch ## RNN训练难题 主讲人：龙良曲  ## Simple Yet? Nothing is straightforward.   #### RNN V.S. LSTM Gradient Visualization ![Image](/uploads/documents/a/b/d/0/abd0d9394eecc78a1f9d9c6dec4ff1e4/p10_1

Default: 1 ### LSTM.forward() - out, (ht, ct) = lstm(x, [ht_1, ct_1]) x: [seq, b, vec] h/c: [num_layer, b, h] out: [seq, b, h] ## ☐ ☐ ☐ 1 lstm = nn.LSTM(input_size=100, hidden_size=20, num_layers=4) LSTMCell.forward() ■ ht, ct = lstmcell(xt, [ht_1, ct_1]) xt: [b, vec] - ht/ct: [b, h] print('one layer lstm') cell = nn.LSTMCell(input_size=100, hidden_size=20) h = torch.zeros(3, 20) c = torch shape, c.shape) torch.Size([3, 20]) torch.Size([3, 20]) ## Single layer ## ☀️ ☁️ ☁️ ## Two Layers ## ☐ ☐ ☐ print('two layer lstm') cell1 = nn.LSTMCell(input_size=100, hidden_size=30) cell2

. . . . . . . . . . . . . 2 1.4 The model layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.5 The view layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.6 The template layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.7 Forms . . . . . . . . . . . . How to write reusable apps | Writing your first patch for Django 1.4 The model layer Django provides an abstraction layer (the “models”) for structuring and manipulating the data of your Web application

CakePHP at a Glance • Conventions Over Configuration • The Model Layer • The View Layer • The Controller Layer • CakePHP Request Cycle • Just the Start • Additional The conventions chapter covers the various conventions that CakePHP uses. ## The Model Layer The Model layer represents the part of your application that implements the business logic. It is responsible associating or other tasks related to handling data. In the case of a social network, the Model layer would take care of tasks such as saving the user data, saving friends' associations, storing and

15 3.4.3 Goal ..... 15 3.4.4 Implementation ..... 16 L1 Kernel Layer ..... 16 L2 Feature Layer ..... 16 L3 Ecosystem Layer ..... 17 Features ..... 18 4.1 DB Compatibility ..... 18 4.1.1 above multi-model databases. It focuses on how to reuse existing databases and their respective upper layer, rather than creating a new database. The concepts at the core of the project are Link, Enhance and ShardingSphere-JDBC defines itself as a lightweight Java framework that provides extra services at the Java JDBC layer. With the client end connecting directly to the database, it provides services in the form of a jar

num_time_steps - 1, 1) ## ☀️ ☁️ ☁️ Network def forward(self, x, hidden_prev): out, hidden_prev = self.rnn(x, hidden_prev) # [1, seq, h] => [seq, h] out = out.view(-1, hidden_size) out = self _1.jpg)  ## 下一课时 RNN训练难题 ## Thank You

Getting help 1 1.3 How the documentation is organized 2 1.4 The model layer 2 1.5 The view layer 2 1.6 The template layer 3 1.7 Forms 3 1.8 The development process 3 1.9 The admin 4 1.10 than tutorials and assume some knowledge of how Django works. ### 1.4 The model layer Django provides an abstraction layer (the “models”) for structuring and manipulating the data of your web application Providing initial data | Optimize database access | PostgreSQL specific features ### 1.5 The view layer Django has the concept of “views” to encapsulate the logic responsible for processing a user’s request

Copper, L2, Bot) Layer selection Tool 10 D Code selection (hight light items that use this dcode) fmt: mm X4.6 Y4.6 no LZ Info about Gerber file options loaded in the current layer ### 4. Left toolbar Show Source  Clear Layer  Text Editor • active layer in a text editor. • Clear Layer erases the contents of the active layer. ### 6. Layer Manager The layer manager has 2 purposes: • Select the active layer • Show/hide layers Layer | Render