forked from kubapok/en-ner-conll-2003
454 lines
8.6 KiB
Python
454 lines
8.6 KiB
Python
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#!/usr/bin/env python
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# coding: utf-8
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# # Klasyfikacja wieloklasowa i sequence labelling
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# In[1]:
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import numpy as np
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import gensim
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import torch
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import pandas as pd
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import seaborn as sns
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from sklearn.model_selection import train_test_split
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from datasets import load_dataset
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from torchtext.vocab import Vocab
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from collections import Counter
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from sklearn.datasets import fetch_20newsgroups
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from sklearn.feature_extraction.text import TfidfVectorizer
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from sklearn.metrics import accuracy_score
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# ### Zadanie domowe
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#
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# - sklonować repozytorium https://git.wmi.amu.edu.pl/kubapok/en-ner-conll-2003
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# - stworzyć klasyfikator bazujący na sieci neuronowej feed forward w pytorchu (można bazować na tym jupyterze lub nie).
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# - klasyfikator powinien obejmować dodatkowe cechy (np. długość wyrazu, czy wyraz zaczyna się od wielkiej litery, stemmming słowa, czy zawiera cyfrę)
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# - stworzyć predykcje w plikach dev-0/out.tsv oraz test-A/out.tsv
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# - wynik fscore sprawdzony za pomocą narzędzia geval (patrz poprzednie zadanie) powinien wynosić conajmniej 0.60
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# - proszę umieścić predykcję oraz skrypty generujące (w postaci tekstowej a nie jupyter) w repo, a w MS TEAMS umieścić link do swojego repo
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# termin 08.06, 80 punktów
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#
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# # train
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# In[2]:
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import lzma
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import re
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import itertools
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import torch
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# In[3]:
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def read_data(filename):
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all_data = lzma.open(filename).read().decode('UTF-8').split('\n')
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return [line.split('\t') for line in all_data][:-1]
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train_data = read_data('train/train.tsv.xz')
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tokens, ner_tags = [], []
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for i in train_data:
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ner_tags.append(i[0].split())
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tokens.append(i[1].split())
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# In[4]:
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ner_tags_set = list(set(itertools.chain(*ner_tags)))
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print(ner_tags_set)
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# In[5]:
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ner_tags_dic = {}
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for i in range(len(ner_tags_set)):
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ner_tags_dic[ner_tags_set[i]] = i
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print(ner_tags_dic)
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# In[6]:
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for i in range(len(ner_tags)):
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for j in range(len(ner_tags[i])):
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ner_tags[i][j] = ner_tags_dic[ner_tags[i][j]]
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# In[7]:
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def data_process(dt):
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return [ torch.tensor([vocab['<bos>']] +[vocab[token] for token in document ] + [vocab['<eos>']], dtype = torch.long) for document in dt]
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# In[8]:
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def labels_process(dt):
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return [ torch.tensor([0] + document + [0], dtype = torch.long) for document in dt]
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# In[9]:
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def build_vocab(dataset):
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counter = Counter()
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for document in dataset:
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counter.update(document)
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return Vocab(counter, specials=['<unk>', '<pad>', '<bos>', '<eos>'])
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# In[10]:
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vocab = build_vocab(tokens)
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# In[11]:
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train_tokens_ids = data_process(tokens)
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train_labels = labels_process(ner_tags)
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# In[12]:
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train_tokens_ids[0]
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# In[13]:
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class NeuralNetworkModel(torch.nn.Module):
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def __init__(self, output_size):
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super(NeuralNetworkModel, self).__init__()
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self.fc1 = torch.nn.Linear(10_000,len(train_tokens_ids))
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self.softmax = torch.nn.Softmax(dim=0)
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def forward(self, x):
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x = self.fc1(x)
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x = self.softmax(x)
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return x
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# In[14]:
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class NERModel(torch.nn.Module):
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def __init__(self,):
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super(NERModel, self).__init__()
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self.emb = torch.nn.Embedding(23627,200)
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self.fc1 = torch.nn.Linear(600,9)
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def forward(self, x):
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x = self.emb(x)
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x = x.reshape(600)
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x = self.fc1(x)
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#x = self.softmax(x)
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return x
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# In[15]:
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nn_model = NeuralNetworkModel(len(train_tokens_ids))
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# In[16]:
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train_tokens_ids[0][1:4]
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# In[17]:
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ner_model = NERModel()
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# In[18]:
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ner_model(train_tokens_ids[0][1:4])
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# In[19]:
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criterion = torch.nn.CrossEntropyLoss()
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# In[20]:
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optimizer = torch.optim.Adam(ner_model.parameters())
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# In[21]:
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len(train_labels)
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# In[22]:
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for epoch in range(2):
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loss_score = 0
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acc_score = 0
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prec_score = 0
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selected_items = 0
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recall_score = 0
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relevant_items = 0
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items_total = 0
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nn_model.train()
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for i in range(100):
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for j in range(1, len(train_labels[i]) - 1):
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X = train_tokens_ids[i][j-1: j+2]
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Y = train_labels[i][j: j+1]
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Y_predictions = ner_model(X)
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acc_score += int(torch.argmax(Y_predictions) == Y)
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if torch.argmax(Y_predictions) != 0:
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selected_items +=1
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if torch.argmax(Y_predictions) != 0 and torch.argmax(Y_predictions) == Y.item():
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prec_score += 1
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if Y.item() != 0:
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relevant_items +=1
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if Y.item() != 0 and torch.argmax(Y_predictions) == Y.item():
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recall_score += 1
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items_total += 1
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optimizer.zero_grad()
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loss = criterion(Y_predictions.unsqueeze(0), Y)
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loss.backward()
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optimizer.step()
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loss_score += loss.item()
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precision = prec_score / selected_items
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recall = recall_score / relevant_items
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f1_score = (2*precision * recall) / (precision + recall)
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display('epoch: ', epoch)
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display('loss: ', loss_score / items_total)
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display('acc: ', acc_score / items_total)
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display('prec: ', precision)
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display('recall: : ', recall)
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display('f1: ', f1_score)
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# # dev-0
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# In[23]:
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with open('dev-0/in.tsv', "r", encoding="utf-8") as f:
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dev_0_data = [line.rstrip() for line in f]
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dev_0_data = [i.split() for i in dev_0_data]
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# In[24]:
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with open('dev-0/expected.tsv', "r", encoding="utf-8") as f:
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dev_0_tags = [line.rstrip() for line in f]
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dev_0_tags = [i.split() for i in dev_0_tags]
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# In[25]:
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for i in range(len(dev_0_tags)):
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for j in range(len(dev_0_tags[i])):
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dev_0_tags[i][j] = ner_tags_dic[dev_0_tags[i][j]]
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# In[26]:
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test_tokens_ids = data_process(dev_0_data)
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test_labels = labels_process(dev_0_tags)
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# In[27]:
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result = []
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loss_score = 0
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acc_score = 0
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prec_score = 0
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selected_items = 0
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recall_score = 0
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relevant_items = 0
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items_total = 0
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nn_model.eval()
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for i in range(len(test_tokens_ids)):
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result.append([])
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for j in range(1, len(test_labels[i]) - 1):
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X = test_tokens_ids[i][j-1: j+2]
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Y = test_labels[i][j: j+1]
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Y_predictions = ner_model(X)
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acc_score += int(torch.argmax(Y_predictions) == Y)
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if torch.argmax(Y_predictions) != 0:
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selected_items +=1
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if torch.argmax(Y_predictions) != 0 and torch.argmax(Y_predictions) == Y.item():
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prec_score += 1
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if Y.item() != 0:
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relevant_items +=1
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if Y.item() != 0 and torch.argmax(Y_predictions) == Y.item():
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recall_score += 1
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items_total += 1
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loss = criterion(Y_predictions.unsqueeze(0), Y)
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loss_score += loss.item()
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result[i].append(int(torch.argmax(Y_predictions)))
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precision = prec_score / selected_items
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recall = recall_score / relevant_items
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f1_score = (2*precision * recall) / (precision + recall)
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display('loss: ', loss_score / items_total)
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display('acc: ', acc_score / items_total)
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display('prec: ', precision)
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display('recall: : ', recall)
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display('f1: ', f1_score)
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# In[28]:
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tags = []
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tmp = []
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for i in ner_tags_dic:
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tmp.append(i)
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for i in range(len(result)):
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tags.append([])
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for j in range(len(result[i])):
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tags[i].append(tmp[result[i][j]])
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# In[29]:
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f = open("dev-0/out.tsv", "a")
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for i in tags:
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f.write(' '.join(i) + '\n')
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f.close()
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# In[30]:
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with open('dev-0/expected.tsv', "r", encoding="utf-8") as f:
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dev_0_tags = [line.rstrip() for line in f]
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dev_0_tags = [i.split() for i in dev_0_tags]
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# In[31]:
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import math
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t = 0
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for i in range(len(tags)):
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for j in range(len(tags[i])):
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if tags[i][j] == dev_0_tags[i][j]:
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t += 1
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print(t/len(list((itertools.chain(*tags)))))
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# # test
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# In[32]:
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with open('test-A/in.tsv', "r", encoding="utf-8") as f:
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test_data = [line.rstrip() for line in f]
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test_data = [i.split() for i in test_data]
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# In[33]:
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test_tokens_ids = data_process(test_data)
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# In[34]:
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result = []
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loss_score = 0
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acc_score = 0
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prec_score = 0
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selected_items = 0
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recall_score = 0
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relevant_items = 0
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items_total = 0
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nn_model.eval()
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for i in range(len(test_tokens_ids)):
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result.append([])
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for j in range(1, len(test_tokens_ids[i]) - 1):
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X = test_tokens_ids[i][j-1: j+2]
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Y_predictions = ner_model(X)
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result[i].append(int(torch.argmax(Y_predictions)))
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# In[35]:
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tags = []
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tmp = []
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for i in ner_tags_dic:
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tmp.append(i)
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for i in range(len(result)):
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tags.append([])
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for j in range(len(result[i])):
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tags[i].append(tmp[result[i][j]])
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# In[36]:
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f = open("test-A/out.tsv", "a")
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for i in tags:
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f.write(' '.join(i) + '\n')
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f.close()
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