Deep Learning Recurrent Neural Networks In Python Lstm Gru And More Rnn Machine Learning Architectures In Python And Theano Machine Learning In Python [RECENT — 2024]

import numpy as np from keras.models import Sequential from keras.layers import GRU, Dense def generate_sine_wave(seq_length, num_samples): X, y = [], [] for _ in range(num_samples): start = np.random.uniform(0, 4*np.pi) seq = np.sin(np.linspace(start, start + seq_length, seq_length + 1)) X.append(seq[:-1].reshape(-1, 1)) y.append(seq[-1]) return np.array(X), np.array(y)

In this post, we’ll cut through the hype and get practical. You'll learn the core RNN architectures (Simple RNN, LSTM, GRU), and implement them in Python using (via the Keras wrapper, which historically used Theano as a backend). Even if you now use TensorFlow or PyTorch, understanding the Theano-era patterns will solidify your fundamentals. import numpy as np from keras

from keras.models import Sequential from keras.layers import LSTM, GRU, SimpleRNN, Dense, Embedding from keras.preprocessing import sequence max_features = 20000 maxlen = 100 # truncate reviews to 100 words batch_size = 32 Build model model = Sequential() model.add(Embedding(max_features, 128, input_length=maxlen)) model.add(LSTM(128, dropout=0.2, recurrent_dropout=0.2)) # or GRU(128) model.add(Dense(1, activation='sigmoid')) Compile (Theano backend) model.compile(loss='binary_crossentropy', optimizer='adam', metrics=['accuracy']) Train model.fit(x_train, y_train, batch_size=batch_size, epochs=5, validation_data=(x_val, y_val)) from keras

h_t = tanh(W_x * x_t + W_h * h_t-1 + b)