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51 lines
2.8 KiB
Markdown
51 lines
2.8 KiB
Markdown
# استخدام مجزئيات النصوص من 🤗 Tokenizers
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يعتمد [`PreTrainedTokenizerFast`] على مكتبة [🤗 Tokenizers](https://huggingface.co/docs/tokenizers). يمكن تحميل المجزئات اللغويين الذين تم الحصول عليهم من مكتبة 🤗 Tokenizers ببساطة شديدة في 🤗 Transformers.
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قبل الدخول في التفاصيل، دعونا نبدأ أولاً بإنشاء مُجزىء لغوي تجريبي في بضع سطور:
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```python
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>>> from tokenizers import Tokenizer
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>>> from tokenizers.models import BPE
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>>> from tokenizers.trainers import BpeTrainer
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>>> from tokenizers.pre_tokenizers import Whitespace
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>>> tokenizer = Tokenizer(BPE(unk_token="[UNK]"))
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>>> trainer = BpeTrainer(special_tokens=["[UNK]", "[CLS]", "[SEP]", "[PAD]", "[MASK]"])
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>>> tokenizer.pre_tokenizer = Whitespace()
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>>> files = [...]
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>>> tokenizer.train(files, trainer)
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```
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الآن لدينا مُجزىء لغوي مدرب على الملفات التي حددناها. يمكننا إما الاستمرار في استخدامه في وقت التشغيل هذا، أو حفظه في ملف JSON لإعادة استخدامه لاحقًا.
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## تحميل مُجزئ النّصوص مُباشرةً
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دعونا نرى كيف يمكننا الاستفادة من كائن (مُجزئ النصوص) في مكتبة 🤗 Transformers. تسمح فئة [`PreTrainedTokenizerFast`] سهولة إنشاء *tokenizer*، من خلال قبول كائن *المُجزئ النصوص* مُهيّأ مُسبقًا كمعامل:
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```python
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>>> from transformers import PreTrainedTokenizerFast
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>>> fast_tokenizer = PreTrainedTokenizerFast(tokenizer_object=tokenizer)
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```
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يمكن الآن استخدام هذا الكائن مع جميع الطرق المُشتركة بين مُجزّئي النّصوص لـ 🤗 Transformers! انتقل إلى [صفحة مُجزّئ النّصوص](main_classes/tokenizer) لمزيد من المعلومات.
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## التحميل من ملف JSON
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لتحميل مُجزّئ النص من ملف JSON، دعونا نبدأ أولاً بحفظ مُجزّئ النّصوص:
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```python
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>>> tokenizer.save("tokenizer.json")
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```
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يمكن تمرير المسار الذي حفظنا به هذا الملف إلى طريقة تهيئة [`PreTrainedTokenizerFast`] باستخدام المُعامل `tokenizer_file`:
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```python
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>>> from transformers import PreTrainedTokenizerFast
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>>> fast_tokenizer = PreTrainedTokenizerFast(tokenizer_file="tokenizer.json")
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```
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يمكن الآن استخدام هذا الكائن مع جميع الطرق التي تشترك فيها مُجزّئي النّصوص لـ 🤗 Transformers! انتقل إلى [صفحة مُجزّئ النص](main_classes/tokenizer) لمزيد من المعلومات. |