Transformer/transformer.ipynb

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     "text": [
      "No model was supplied, defaulted to dbmdz/bert-large-cased-finetuned-conll03-english and revision f2482bf (https://huggingface.co/dbmdz/bert-large-cased-finetuned-conll03-english).\n",
      "Using a pipeline without specifying a model name and revision in production is not recommended.\n",
      "c:\\Users\\walcz\\Desktop\\studia\\uczenie\\RNN\\en-ner-conll-2003\\myenv\\Lib\\site-packages\\huggingface_hub\\file_download.py:1132: FutureWarning: `resume_download` is deprecated and will be removed in version 1.0.0. Downloads always resume when possible. If you want to force a new download, use `force_download=True`.\n",
      "  warnings.warn(\n",
      "Some weights of the model checkpoint at dbmdz/bert-large-cased-finetuned-conll03-english were not used when initializing BertForTokenClassification: ['bert.pooler.dense.bias', 'bert.pooler.dense.weight']\n",
      "- This IS expected if you are initializing BertForTokenClassification from the checkpoint of a model trained on another task or with another architecture (e.g. initializing a BertForSequenceClassification model from a BertForPreTraining model).\n",
      "- This IS NOT expected if you are initializing BertForTokenClassification from the checkpoint of a model that you expect to be exactly identical (initializing a BertForSequenceClassification model from a BertForSequenceClassification model).\n",
      "c:\\Users\\walcz\\Desktop\\studia\\uczenie\\RNN\\en-ner-conll-2003\\myenv\\Lib\\site-packages\\transformers\\pipelines\\token_classification.py:168: UserWarning: `grouped_entities` is deprecated and will be removed in version v5.0.0, defaulted to `aggregation_strategy=\"AggregationStrategy.SIMPLE\"` instead.\n",
      "  warnings.warn(\n"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Accuracy for dev0: 94.88%\n"
     ]
    }
   ],
   "source": [
    "import pandas as pd\n",
    "from transformers import pipeline\n",
    "\n",
    "# Wczytanie danych\n",
    "train_data = pd.read_csv('en-ner-conll-2003/train/train.tsv.xz', delimiter='\\t', header=None, compression='xz')\n",
    "in_data_dev0 = pd.read_csv('en-ner-conll-2003/dev-0/in.tsv', delimiter='\\t', header=None)\n",
    "expected_data = pd.read_csv('en-ner-conll-2003/dev-0/expected.tsv', delimiter='\\t', header=None)\n",
    "in_data_testA = pd.read_csv('en-ner-conll-2003/test-A/in.tsv', delimiter='\\t', header=None)\n",
    "\n",
    "# Inicjalizacja pipeline NER\n",
    "ner_pipeline = pipeline(\"ner\", grouped_entities=True)\n",
    "\n",
    "# Przetwarzanie danych z pliku in.tsv\n",
    "sentences_dev0 = in_data_dev0[0].tolist()\n",
    "senteces_testA = in_data_testA[0].tolist()\n",
    "\n",
    "ner_results_dev = ner_pipeline(sentences_dev0)\n",
    "ner_results_testA = ner_pipeline(senteces_testA)\n",
    "\n",
    "# Funkcja do mapowania wyników NER na format B-XXX, I-XXX, O\n",
    "def map_ner_results(ner_results, sentences):\n",
    "    ner_labels = []\n",
    "    for sentence, entities in zip(sentences, ner_results):\n",
    "        words = sentence.split()\n",
    "        labels = ['O'] * len(words)\n",
    "        for entity in entities:\n",
    "            start_idx = entity['start']\n",
    "            end_idx = entity['end']\n",
    "            entity_label = entity['entity_group']\n",
    "            entity_words = sentence[start_idx:end_idx].split()\n",
    "            start_word_idx = len(sentence[:start_idx].split())\n",
    "            end_word_idx = start_word_idx + len(entity_words)\n",
    "            if start_word_idx < len(labels) and end_word_idx <= len(labels):\n",
    "                labels[start_word_idx] = f'B-{entity_label}'\n",
    "                for i in range(start_word_idx + 1, end_word_idx):\n",
    "                    labels[i] = f'I-{entity_label}'\n",
    "        ner_labels.append(labels)\n",
    "    return ner_labels\n",
    "\n",
    "# Mapowanie wyników NER na odpowiednie etykiety\n",
    "predicted_labels_dev0 = map_ner_results(ner_results_dev, sentences_dev0)\n",
    "predicted_labels_testA = map_ner_results(ner_results_testA, senteces_testA)\n",
    "\n",
    "# Konwersja listy etykiet na format ciągu znaków\n",
    "predicted_strings_dev0 = [' '.join(labels) for labels in predicted_labels_dev0]\n",
    "predicted_strings_testA = [' '.join(labels) for labels in predicted_labels_testA]\n",
    "\n",
    "expected_strings = expected_data[0].tolist()\n",
    "\n",
    "# Zapisanie wyników do pliku out.tsv\n",
    "with open('en-ner-conll-2003/dev-0/out.tsv', 'w') as f:\n",
    "    for line in predicted_strings_dev0:\n",
    "        f.write(line + '\\n')\n",
    "\n",
    "with open('en-ner-conll-2003/test-A/out.tsv', 'w') as f:\n",
    "    for line in predicted_strings_testA:\n",
    "        f.write(line + '\\n')\n",
    "\n",
    "\n",
    "# Sprawdzenie zgodności wyników\n",
    "correct = 0\n",
    "total = 0\n",
    "for pred, exp in zip(predicted_strings_dev0, expected_strings):\n",
    "    pred_labels = pred.split()\n",
    "    exp_labels = exp.split()\n",
    "    for p, e in zip(pred_labels, exp_labels):\n",
    "        if p == e:\n",
    "            correct += 1\n",
    "        total += 1\n",
    "\n",
    "accuracy = correct / total\n",
    "print(f\"Accuracy for dev0: {accuracy:.2%}\")\n"
   ]
  }
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