paranormal-or-skeptic-ISI-p.../neural-network.py

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2021-05-11 16:06:32 +02:00
import os
import pandas as pd
import tensorflow as tf
import numpy as np
import torch
import torch.nn as nn
from tensorflow.keras.layers.experimental.preprocessing import TextVectorization
os.environ['CUDA_VISIBLE_DEVICES'] = '-1'
print('debug 1')
train_df = pd.read_csv('train/in.tsv', header=None, sep='\t')
test_df = pd.read_csv('test-A/in.tsv', header=None, sep='\t')
dev_df = pd.read_csv('dev-0/in.tsv', header=None, sep='\t')
train_expected = pd.read_csv('train/expected.tsv', header=None, sep='\t')
train_text = train_df[0].tolist()
test_text = test_df[0].tolist()
dev_text = test_df[0].tolist()
text_data = train_text + test_text + dev_text
vectorize_layer = TextVectorization(max_tokens=5, output_mode="int")
text_data = tf.data.Dataset.from_tensor_slices(text_data)
vectorize_layer.adapt(text_data.batch(64))
inputs = tf.keras.layers.Input(shape=(1,), dtype=tf.string, name="text")
outputs = vectorize_layer(inputs)
model = tf.keras.Model(inputs, outputs)
print('uwaga debug')
x_train = list(map(model.predict, train_text))
y_train = train_expected[0]
x_test = list(map(model.predict, test_text))
loss_function = nn.CrossEntropyLoss()
x_train = pd.DataFrame(x_train)
x_test = pd.DataFrame(x_test)
y_train = pd.DataFrame(y_train[0])
# (model.predict(["Murder in the forset!"]))
class FeedforwardNeuralNetModel(nn.Module):
def __init__(self, input_dim, hidden_dim, output_dim):
super(FeedforwardNeuralNetModel, self).__init__()
# Linear function
self.fc1 = nn.Linear(input_dim, hidden_dim)
# Non-linearity
self.sigmoid = nn.Sigmoid()
# Linear function (readout)
self.fc2 = nn.Linear(hidden_dim, output_dim)
def forward(self, x):
# Linear function # LINEAR
out = self.fc1(x)
# Non-linearity # NON-LINEAR
out = self.sigmoid(out)
# Linear function (readout) # LINEAR
out = self.fc2(out)
return out
num_epochs = 2
for epoch in range(num_epochs):
if (epoch + 1) % 25 == 0:
print("Epoch completed: " + str(epoch + 1))
print(f"Epoch number: {epoch}")
train_loss = 0
for index, row in x_train.iterrows():
print(index)
# Forward pass to get output
probs = x_train[0][index]
# Get the target label
target = y_train[0][index]
# Calculate Loss: softmax --> cross entropy loss
loss = loss_function(probs, target)
# Accumulating the loss over time
train_loss += loss.item()
# Getting gradients w.r.t. parameters
loss.backward()
train_loss = 0
bow_ff_nn_predictions = []
original_lables_ff_bow = []
with torch.no_grad():
for index, row in x_test.iterrows():
probs = x_test[0][index]
bow_ff_nn_predictions.append(torch.argmax(probs, dim=1).cpu().numpy()[0])
print(bow_ff_nn_predictions)