Add tensorflow implementation and Encoder experiment
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Corentin
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6 changed files with 471 additions and 72 deletions
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modulo_tf.py
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194
modulo_tf.py
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from argparse import ArgumentParser
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from pathlib import Path
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import math
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import os
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import shutil
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import sys
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import time
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import numpy as np
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import tensorflow as tf
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from src.tf_network import TFLSTMModel
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from src.torch_utils.utils.batch_generator import BatchGenerator
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def generate_data(batch_size: int, data_length: int) -> tuple[np.ndarray, np.ndarray]:
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modulos = np.random.uniform(3, data_length // 2 + 1, batch_size).astype(np.int32)
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data = np.zeros((data_length, batch_size, 1), dtype=np.float32)
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starts = []
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for mod in modulos:
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starts.append(int(np.random.uniform(0, mod)))
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for i in range(batch_size):
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# np.where(data[i] % modulos[i] == starts[i], [1.0], data[i])
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for j in range(starts[i], data_length, modulos[i]):
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data[j, i, 0] = 1.0
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label = []
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for i in range(batch_size):
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label.append(1 if len(data[:, i]) % modulos[i] == starts[i] else 0)
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return data, np.asarray(label, dtype=np.int64)
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class DataGenerator:
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MAX_LENGTH = 1
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INITIALIZED = False
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@staticmethod
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def pipeline(sequence_length, _dummy_label):
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if not DataGenerator.INITIALIZED:
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np.random.seed(time.time_ns() % (2**32))
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DataGenerator.INITIALIZED = True
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data = np.zeros((DataGenerator.MAX_LENGTH, 1), dtype=np.float32)
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modulo = int(np.random.uniform(3, sequence_length // 2 + 1))
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start = int(np.random.uniform(0, modulo))
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for i in range(start, sequence_length, modulo):
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data[i, 0] = 1.0
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return data, np.asarray(1 if sequence_length % modulo == start else 0, dtype=np.int64)
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def main():
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parser = ArgumentParser()
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parser.add_argument('--output', type=Path, default=Path('output', 'modulo'), help='Output dir')
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parser.add_argument('--model', default='torch-lstm', help='Model to train')
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parser.add_argument('--batch', type=int, default=32, help='Batch size')
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parser.add_argument('--sequence', type=int, default=12, help='Max sequence length')
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parser.add_argument('--hidden', type=int, default=16, help='LSTM cells hidden size')
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parser.add_argument('--step', type=int, default=2000, help='Number of steps to train')
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arguments = parser.parse_args()
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output_dir: Path = arguments.output
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model: str = arguments.model
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batch_size: int = arguments.batch
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sequence_size: int = arguments.sequence
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hidden_size: int = arguments.hidden
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max_step: int = arguments.step
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output_dir = output_dir.parent / f'modulo_{model}_b{batch_size}_s{sequence_size}_h{hidden_size}'
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if not output_dir.exists():
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output_dir.mkdir(parents=True)
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if (output_dir / 'train').exists():
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shutil.rmtree(output_dir / 'train')
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writer_train = tf.summary.create_file_writer(str(output_dir / 'train'), flush_millis=20000)
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network: tf.keras.Model = None
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if model == 'tf-lstm':
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network = TFLSTMModel(1, hidden_size, 2)
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else:
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print('Error : Unkown model')
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sys.exit(1)
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network = network.compile(
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optimizer='adam',
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loss=tf.losses)
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torch.save(network.state_dict(), output_dir / 'model_ini.pt')
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input_sample = torch.from_numpy(generate_data(2, 4)[0]).to(device)
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writer_train.add_graph(network, (input_sample,))
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# optimizer = torch.optim.Adam(network.parameters(), lr=1e-3, weight_decay=1e-4)
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# scheduler = torch.optim.lr_scheduler.ExponentialLR(optimizer, gamma=0.995)
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# criterion = nn.CrossEntropyLoss()
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sequence_data = np.random.uniform(4, sequence_size + 1, max_step).astype(np.int32)
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sequence_data[0] = sequence_size
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sequence_data_reshaped = np.reshape(np.broadcast_to(
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sequence_data,
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(batch_size, max_step)).transpose((1, 0)), (batch_size * max_step))
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dummy_label = np.zeros((batch_size * max_step), dtype=np.uint8)
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DataGenerator.MAX_LENGTH = sequence_size
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with BatchGenerator(sequence_data_reshaped, dummy_label, batch_size=batch_size,
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pipeline=DataGenerator.pipeline, num_workers=8, shuffle=False) as batch_generator:
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data_np = batch_generator.batch_data
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label_np = batch_generator.batch_label
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running_loss = 0.0
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running_accuracy = 0.0
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running_count = 0
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summary_period = max(max_step // 100, 1)
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np.set_printoptions(precision=2)
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try:
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start_time = time.time()
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while batch_generator.epoch == 0:
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# data_np, label_np = generate_data(batch_size, int(np.random.uniform(4, sequence_size + 1)))
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data = torch.from_numpy(
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data_np.transpose((1, 0, 2))[:sequence_data[batch_generator.step]]).to(device)
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label = torch.from_numpy(label_np).to(device)
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optimizer.zero_grad(set_to_none=True)
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outputs, _states = network(data)
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loss = criterion(outputs[-1], label)
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running_loss += loss.item()
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outputs_np = outputs[-1].detach().cpu().numpy()
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running_accuracy += ((outputs_np[:, 1] > outputs_np[:, 0]).astype(np.int32) == label_np).astype(
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np.float32).mean()
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running_count += 1
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if (batch_generator.step + 1) % summary_period == 0:
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writer_train.add_scalar('metric/loss', running_loss / running_count,
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global_step=batch_generator.step)
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writer_train.add_scalar('metric/error', 1 - (running_accuracy / running_count),
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global_step=batch_generator.step)
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writer_train.add_scalar('optimizer/lr', scheduler.get_last_lr()[0],
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global_step=batch_generator.step)
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scheduler.step()
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speed = summary_period / (time.time() - start_time)
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print(f'Step {batch_generator.step}, loss: {running_loss / running_count:.03e}'
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f', acc: {running_accuracy / running_count:.03e}, speed: {speed:0.3f}step/s')
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start_time = time.time()
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running_loss = 0.0
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running_accuracy = 0.0
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running_count = 0
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loss.backward()
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optimizer.step()
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data_np, label_np = batch_generator.next_batch()
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except KeyboardInterrupt:
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print('\r ', end='\r')
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writer_train.close()
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network.eval()
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running_accuracy = 0.0
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running_count = 0
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for _ in range(math.ceil(1000 / batch_size)):
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data_np, label_np = generate_data(batch_size, int(np.random.uniform(4, sequence_size + 1)))
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data = torch.from_numpy(data_np).to(device)
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label = torch.from_numpy(label_np).to(device)
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outputs, _states = network(data)
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outputs_np = outputs[-1].detach().cpu().numpy()
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running_accuracy += ((outputs_np[:, 1] > outputs_np[:, 0]).astype(np.int32) == label_np).astype(
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np.float32).mean()
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running_count += 1
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print(f'Validation accuracy: {running_accuracy / running_count:.03f}')
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test_data = [
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[[1.], [0.], [0.], [1.], [0.], [0.]],
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[[1.], [0.], [0.], [0.], [1.], [0.], [0.], [0.]],
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[[1.], [0.], [0.], [0.], [0.], [1.], [0.], [0.], [0.]],
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[[1.], [0.], [0.], [0.], [0.], [1.], [0.], [0.], [0.], [0.]],
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[[0.], [1.], [0.], [0.], [0.], [0.], [0.], [1.], [0.], [0.], [0.], [0.]],
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[[1.], [0.], [0.], [0.], [0.], [0.], [1.], [0.], [0.], [0.], [0.], [0.]],
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[[0.], [1.], [0.], [0.], [0.], [0.], [0.], [1.], [0.], [0.], [0.], [0.], [0.]],
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[[0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.]],
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[[1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.]],
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[[1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.],
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[0.], [1.], [0.], [0.], [1.], [0.], [0.]],
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[[0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.], [0.], [1.], [0.],
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[0.], [1.], [0.], [0.], [1.], [0.]],
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]
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test_label = np.asarray([1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0], dtype=np.int32)
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running_accuracy = 0.0
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running_count = 0
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for data, label in zip(test_data, test_label):
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outputs, _states = network(
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torch.from_numpy(np.expand_dims(np.asarray(data, dtype=np.float32), 1)).to(device))
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outputs_np = outputs[-1].detach().cpu().numpy()
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output_correct = int(outputs_np[0, 1] > outputs_np[0, 0]) == label
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running_accuracy += 1.0 if output_correct else 0.0
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running_count += 1
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print(f'{len(data)} {np.asarray(data)[:, 0]}, label: {label}'
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f', output: {int(outputs_np[0, 1] > outputs_np[0, 0])}')
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print(f'Test accuracy: {running_accuracy / running_count:.03f}')
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if __name__ == '__main__':
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main()
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