215 lines
8.9 KiB
Python
215 lines
8.9 KiB
Python
# https://arxiv.org/pdf/2001.11692.pdf
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import numpy as np
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import unicodedata
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from time import sleep
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import torch
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import torch.nn as nn
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import torch.nn.functional as F
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import torch.optim as optim
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from sacred.observers import FileStorageObserver, MongoObserver
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from torch.utils.data import Dataset, DataLoader
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import re
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import random
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import os
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import sys
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from tqdm import tqdm
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from Levenshtein import distance as levenshtein_distance
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from sacred import Experiment
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import traceback
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ex = Experiment("CNN")
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ex.observers.append(FileStorageObserver('sacred_file_observer'))
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# try:
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# ex.observers.append(MongoObserver(url='mongodb://mongo_user:mongo_password_IUM_2021@localhost:27017',
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# db_name='sacred'))
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# except Exception as e:
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# traceback.print_exc()
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device = torch.device('cuda:0') if torch.cuda.is_available() else torch.device('cpu')
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class CNN(nn.Module):
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def __init__(self, kernel_size, hidden_layers, channels, embedding_size, in_alphabet, max_len):
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super(CNN, self).__init__()
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self.input_conv = nn.Conv1d(in_channels=len(in_alphabet), out_channels=channels, kernel_size=kernel_size)
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self.conv_hidden = nn.ModuleList(
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[nn.Conv1d(in_channels=channels, out_channels=channels, kernel_size=kernel_size) for _ in
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range(hidden_layers)])
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self.last_layer_size = (max_len - (kernel_size - 1) * (hidden_layers + 1)) * channels
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self.lin = nn.Linear(self.last_layer_size, embedding_size)
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def forward(self, x):
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x = self.input_conv(x)
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x = F.relu(x, inplace=True)
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for c in self.conv_hidden:
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x = c(x)
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x = F.relu(x, inplace=True)
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x = x.view(x.size()[0], self.last_layer_size)
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x = self.lin(x)
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return x
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def dist(a: [str], b: [str]):
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return torch.tensor([levenshtein_distance(a[i], b[i]) for i in range(len(a))], dtype=torch.float, device=device)
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def train_model(model, learning_rate, in_alphabet, max_len, data, epochs, batch_size):
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optimizer = optim.Adam(filter(lambda x: x.requires_grad, model.parameters()),
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lr=learning_rate)
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outer_bar = tqdm(total=epochs, position=0)
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inner_bar = tqdm(total=len(data), position=1)
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outer_bar.reset()
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outer_bar.set_description("Epochs")
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def collate(batch: [(torch.tensor, str)]):
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batch_text = torch.zeros((len(batch), len(in_alphabet), max_len))
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batch_phonemes = list(map(lambda x: x[1], batch))
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for i, (sample, _) in enumerate(batch):
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for chr_pos, index in enumerate(sample):
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batch_text[i, index, chr_pos] = 1
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return batch_text, batch_phonemes
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data_loader = DataLoader(dataset=data, drop_last=True,
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batch_size=3 * batch_size,
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collate_fn=collate,
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shuffle=True)
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for epoch in range(epochs):
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total_loss = 0
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inner_bar.reset()
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for batch_text, batch_phonemes in data_loader:
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optimizer.zero_grad()
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anchor, positive, negative = batch_text.to(device).split(batch_size)
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ph_anchor = batch_phonemes[:batch_size]
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ph_positive = batch_phonemes[batch_size:2 * batch_size]
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ph_negative = batch_phonemes[2 * batch_size:]
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embedded_anchor = model(anchor)
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embedded_positive = model(positive)
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embedded_negative = model(negative)
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estimated_pos_dist = torch.linalg.norm(embedded_anchor - embedded_positive, dim=1)
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estimated_neg_dist = torch.linalg.norm(embedded_anchor - embedded_negative, dim=1)
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estimated_pos_neg_dist = torch.linalg.norm(embedded_positive - embedded_negative, dim=1)
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actual_pos_dist = dist(ph_anchor, ph_positive)
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actual_neg_dist = dist(ph_anchor, ph_negative)
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actual_pos_neg_dist = dist(ph_positive, ph_negative)
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loss = sum(abs(estimated_neg_dist - actual_neg_dist)
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+ abs(estimated_pos_dist - actual_pos_dist)
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+ abs(estimated_pos_neg_dist - actual_pos_neg_dist)
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+ (estimated_pos_dist - estimated_neg_dist - (actual_pos_dist - actual_neg_dist)).clip(min=0))
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loss.backward()
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optimizer.step()
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inner_bar.update(3 * batch_size)
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loss_scalar = loss.item()
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total_loss += loss_scalar
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inner_bar.set_description("loss %.2f" % loss_scalar)
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ex.log_scalar("avg_loss", total_loss / len(data) * 3)
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# print()
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# print("Total epoch loss:", total_loss)
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# print("Total epoch avg loss:", total_loss / TOTAL_TRAINING_OUT_LEN)
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# print("Training snapshots:", train_snapshots)
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# print("Training snapshots(%):", train_snapshots_percentage)
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# print("Evaluation snapshots:", eval_snapshots)
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# print("Evaluation snapshots(%):", eval_snapshots_percentage)
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outer_bar.set_description("Epochs")
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outer_bar.update(1)
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def evaluate_monte_carlo(model, repeats, data, batch_size, in_alphabet, max_len):
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with torch.no_grad():
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i = 0
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diff = 0
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outer_bar = tqdm(total=repeats, position=0)
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inner_bar = tqdm(total=len(data), position=1)
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outer_bar.set_description("Epochs")
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def collate(batch: [(torch.tensor, str)]):
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batch_text = torch.zeros((len(batch), len(in_alphabet), max_len))
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batch_phonemes = list(map(lambda x: x[1], batch))
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for i, (sample, _) in enumerate(batch):
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for chr_pos, index in enumerate(sample):
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batch_text[i, index, chr_pos] = 1
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return batch_text, batch_phonemes
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for _ in range(repeats):
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data_loader = DataLoader(dataset=data, drop_last=True,
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batch_size=2 * batch_size,
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collate_fn=collate,
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shuffle=True)
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inner_bar.reset()
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for batch_text, batch_phonemes in data_loader:
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positive, negative = batch_text.to(device).split(batch_size)
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ph_positive = batch_phonemes[0:batch_size]
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ph_negative = batch_phonemes[batch_size:]
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embedded_positive = model(positive)
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embedded_negative = model(negative)
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estimated_dist = torch.linalg.norm(embedded_negative - embedded_positive, dim=1)
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actual_dist = dist(ph_negative, ph_positive)
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diff += sum(abs(estimated_dist - actual_dist))
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i += batch_size
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inner_bar.update(2 * batch_size)
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outer_bar.update(1)
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with open('results.txt', 'w+') as r:
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print("Average estimation error " + str(diff.item() / i))
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r.write("Average estimation error " + str(diff.item() / i) + "\n")
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ex.log_scalar("avg_estim_error", diff.item() / i)
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@ex.config
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def cfg():
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kernel_size = 3
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hidden_layers = 14
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data_file = 'preprocessed.tsv'
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epochs = 14
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mode = 'train'
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teacher_forcing_probability = 0.4
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learning_rate = 0.01
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batch_size = 512
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max_len = 32
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total_out_len = 0
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model_file = 'cnn.pth'
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out_lookup = ['', 'b', 'a', 'ʊ', 't', 'k', 'ə', 'z', 'ɔ', 'ɹ', 's', 'j', 'u', 'm', 'f', 'ɪ', 'o', 'ɡ', 'ɛ', 'n',
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'e', 'd',
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'ɫ', 'w', 'i', 'p', 'ɑ', 'ɝ', 'θ', 'v', 'h', 'æ', 'ŋ', 'ʃ', 'ʒ', 'ð']
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in_lookup = ['', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
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'u', 'v', 'w', 'x', 'y', 'z']
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@ex.automain
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def run(kernel_size, hidden_layers, data_file, epochs, teacher_forcing_probability, learning_rate, batch_size, max_len,
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total_out_len, model_file, out_lookup, in_lookup, mode):
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in_alphabet = {letter: idx for idx, letter in enumerate(in_lookup)}
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out_alphabet = {letter: idx for idx, letter in enumerate(out_lookup)}
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data: [(torch.tensor, torch.tensor)] = []
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texts: [str] = []
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with open(data_file) as f:
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for line in f:
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text, phonemes = line.split("\t")
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texts.append(text)
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assert len(text) <= max_len, text
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text = torch.tensor([in_alphabet[letter] for letter in text], dtype=torch.int)
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data.append((text, phonemes))
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cnn = CNN(kernel_size=kernel_size, hidden_layers=hidden_layers, channels=max_len, embedding_size=max_len,
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in_alphabet=in_alphabet, max_len=max_len).to(device)
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if os.path.isfile(model_file):
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cnn.load_state_dict(torch.load(model_file, map_location=torch.device('cpu')))
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else:
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if mode == 'train':
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train_model(cnn, learning_rate, in_alphabet, max_len, data, epochs, batch_size)
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torch.save(cnn.state_dict(), model_file)
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ex.add_artifact(model_file)
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else:
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print(model_file + " missing!")
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exit(2)
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if mode == 'eval':
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cnn.eval()
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evaluate_monte_carlo(cnn, 1, data, batch_size, in_alphabet, max_len)
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