Migrate model card from transformers-repo

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Original file history: https://github.com/huggingface/transformers/commits/master/model_cards/mrm8488/bert-multi-cased-finetuned-xquadv1/README.md

README.md

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+---
+language: multilingual
+thumbnail:
+---
+
+# BERT (base-multilingual-cased) fine-tuned for multilingual Q&A
+
+This model was created by [Google](https://github.com/google-research/bert/blob/master/multilingual.md) and fine-tuned on [XQuAD](https://github.com/deepmind/xquad) like data for multilingual (`11 different languages`) **Q&A** downstream task.
+
+## Details of the language model('bert-base-multilingual-cased')
+
+[Language model](https://github.com/google-research/bert/blob/master/multilingual.md)
+
+| Languages | Heads | Layers | Hidden | Params |
+| --------- | ----- | ------ | ------ | ------ |
+| 104       | 12    | 12     | 768    | 100 M  |
+
+## Details of the downstream task (multilingual Q&A) - Dataset
+
+Deepmind [XQuAD](https://github.com/deepmind/xquad)
+
+Languages covered:
+
+- Arabic: `ar`
+- German: `de`
+- Greek: `el`
+- English: `en`
+- Spanish: `es`
+- Hindi: `hi`
+- Russian: `ru`
+- Thai: `th`
+- Turkish: `tr`
+- Vietnamese: `vi`
+- Chinese: `zh`
+
+As the dataset is based on SQuAD v1.1, there are no unanswerable questions in the data. We chose this
+setting so that models can focus on cross-lingual transfer.
+
+We show the average number of tokens per paragraph, question, and answer for each language in the
+table below. The statistics were obtained using [Jieba](https://github.com/fxsjy/jieba) for Chinese
+and the [Moses tokenizer](https://github.com/moses-smt/mosesdecoder/blob/master/scripts/tokenizer/tokenizer.perl)
+for the other languages.
+
+|           |  en   |  es   |  de   |  el   |  ru   |  tr   |  ar   |  vi   |  th   |  zh   |  hi   |
+| --------- | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: |
+| Paragraph | 142.4 | 160.7 | 139.5 | 149.6 | 133.9 | 126.5 | 128.2 | 191.2 | 158.7 | 147.6 | 232.4 |
+| Question  | 11.5  | 13.4  | 11.0  | 11.7  | 10.0  |  9.8  | 10.7  | 14.8  | 11.5  | 10.5  | 18.7  |
+| Answer    |  3.1  |  3.6  |  3.0  |  3.3  |  3.1  |  3.1  |  3.1  |  4.5  |  4.1  |  3.5  |  5.6  |
+
+Citation:
+
+<details>
+
+```bibtex
+@article{Artetxe:etal:2019,
+      author    = {Mikel Artetxe and Sebastian Ruder and Dani Yogatama},
+      title     = {On the cross-lingual transferability of monolingual representations},
+      journal   = {CoRR},
+      volume    = {abs/1910.11856},
+      year      = {2019},
+      archivePrefix = {arXiv},
+      eprint    = {1910.11856}
+}
+```
+
+</details>
+
+As **XQuAD** is just an evaluation dataset, I used `Data augmentation techniques` (scraping, neural machine translation, etc) to obtain more samples and split the dataset in order to have a train and test set. The test set was created in a way that contains the same number of samples for each language. Finally, I got:
+
+| Dataset     | # samples |
+| ----------- | --------- |
+| XQUAD train | 50 K      |
+| XQUAD test  | 8 K       |
+
+## Model training
+
+The model was trained on a Tesla P100 GPU and 25GB of RAM.
+The script for fine tuning can be found [here](https://github.com/huggingface/transformers/blob/master/examples/distillation/run_squad_w_distillation.py)
+
+
+## Model in action
+
+Fast usage with **pipelines**:
+
+```python
+from transformers import pipeline
+
+from transformers import pipeline
+
+qa_pipeline = pipeline(
+    "question-answering",
+    model="mrm8488/bert-multi-cased-finetuned-xquadv1",
+    tokenizer="mrm8488/bert-multi-cased-finetuned-xquadv1"
+)
+
+
+# context: Coronavirus is seeding panic in the West because it expands so fast.
+
+# question: Where is seeding panic Coronavirus?
+qa_pipeline({
+    'context': "कोरोनावायरस पश्चिम में आतंक बो रहा है क्योंकि यह इतनी तेजी से फैलता है।",
+    'question': "कोरोनावायरस घबराहट कहां है?"
+    
+})
+# output: {'answer': 'पश्चिम', 'end': 18, 'score': 0.7037217439689059, 'start': 12}
+
+qa_pipeline({
+    'context': "Manuel Romero has been working hardly in the repository hugginface/transformers lately",
+    'question': "Who has been working hard for hugginface/transformers lately?"
+    
+})
+# output: {'answer': 'Manuel Romero', 'end': 13, 'score': 0.7254485993702389, 'start': 0}
+
+qa_pipeline({
+    'context': "Manuel Romero a travaillé à peine dans le référentiel hugginface / transformers ces derniers temps",
+    'question': "Pour quel référentiel a travaillé Manuel Romero récemment?"
+    
+})
+#output: {'answer': 'hugginface / transformers', 'end': 79, 'score': 0.6482061613915384, 'start': 54}
+```
+![model in action](https://media.giphy.com/media/MBlire8Wj7ng73VBQ5/giphy.gif)
+
+Try it on a Colab:
+
+<a href="https://colab.research.google.com/github/mrm8488/shared_colab_notebooks/blob/master/Try_mrm8488_xquad_finetuned_model.ipynb" target="_parent"><img src="https://camo.githubusercontent.com/52feade06f2fecbf006889a904d221e6a730c194/68747470733a2f2f636f6c61622e72657365617263682e676f6f676c652e636f6d2f6173736574732f636f6c61622d62616467652e737667" alt="Open In Colab" data-canonical-src="https://colab.research.google.com/assets/colab-badge.svg"></a>
+
+
+
+> Created by [Manuel Romero/@mrm8488](https://twitter.com/mrm8488)
+
+> Made with <span style="color: #e25555;">&hearts;</span> in Spain