Added model cards for Romanian BERT models (#4437)
* Create README.md * Create README.md * Update README.md * Update README.md * Apply suggestions from code review Co-authored-by: Julien Chaumond <chaumond@gmail.com>
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language: romanian
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# bert-base-romanian-cased-v1
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The BERT **base**, **cased** model for Romanian, trained on a 15GB corpus, version ![v1.0](https://img.shields.io/badge/v1.0-21%20Apr%202020-ff6666)
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### How to use
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```python
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from transformers import AutoTokenizer, AutoModel
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import torch
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# load tokenizer and model
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tokenizer = AutoTokenizer.from_pretrained("dumitrescustefan/bert-base-romanian-cased-v1")
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model = AutoModel.from_pretrained("dumitrescustefan/bert-base-romanian-cased-v1")
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# tokenize a sentence and run through the model
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input_ids = torch.tensor(tokenizer.encode("Acesta este un test.", add_special_tokens=True)).unsqueeze(0) # Batch size 1
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outputs = model(input_ids)
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# get encoding
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last_hidden_states = outputs[0] # The last hidden-state is the first element of the output tuple
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```
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### Evaluation
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Evaluation is performed on Universal Dependencies [Romanian RRT](https://universaldependencies.org/treebanks/ro_rrt/index.html) UPOS, XPOS and LAS, and on a NER task based on [RONEC](https://github.com/dumitrescustefan/ronec). Details, as well as more in-depth tests not shown here, are given in the dedicated [evaluation page](https://github.com/dumitrescustefan/Romanian-Transformers/tree/master/evaluation/README.md).
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The baseline is the [Multilingual BERT](https://github.com/google-research/bert/blob/master/multilingual.md) model ``bert-base-multilingual-(un)cased``, as at the time of writing it was the only available BERT model that works on Romanian.
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| Model | UPOS | XPOS | NER | LAS |
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|--------------------------------|:-----:|:------:|:-----:|:-----:|
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| bert-base-multilingual-cased | 97.87 | 96.16 | 84.13 | 88.04 |
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| bert-base-romanian-cased-v1 | **98.00** | **96.46** | **85.88** | **89.69** |
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### Corpus
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The model is trained on the following corpora (stats in the table below are after cleaning):
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| Corpus | Lines(M) | Words(M) | Chars(B) | Size(GB) |
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|----------- |:--------: |:--------: |:--------: |:--------: |
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| OPUS | 55.05 | 635.04 | 4.045 | 3.8 |
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| OSCAR | 33.56 | 1725.82 | 11.411 | 11 |
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| Wikipedia | 1.54 | 60.47 | 0.411 | 0.4 |
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| **Total** | **90.15** | **2421.33** | **15.867** | **15.2** |
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#### Acknowledgements
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- We'd like to thank [Sampo Pyysalo](https://github.com/spyysalo) from TurkuNLP for helping us out with the compute needed to pretrain the v1.0 BERT models. He's awesome!
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---
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language: romanian
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# bert-base-romanian-uncased-v1
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The BERT **base**, **uncased** model for Romanian, trained on a 15GB corpus, version ![v1.0](https://img.shields.io/badge/v1.0-21%20Apr%202020-ff6666)
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### How to use
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```python
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from transformers import AutoTokenizer, AutoModel
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import torch
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# load tokenizer and model
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tokenizer = AutoTokenizer.from_pretrained("dumitrescustefan/bert-base-romanian-uncased-v1", do_lower_case=True)
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model = AutoModel.from_pretrained("dumitrescustefan/bert-base-romanian-uncased-v1")
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# tokenize a sentence and run through the model
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input_ids = torch.tensor(tokenizer.encode("Acesta este un test.", add_special_tokens=True)).unsqueeze(0) # Batch size 1
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outputs = model(input_ids)
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# get encoding
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last_hidden_states = outputs[0] # The last hidden-state is the first element of the output tuple
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```
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### Evaluation
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Evaluation is performed on Universal Dependencies [Romanian RRT](https://universaldependencies.org/treebanks/ro_rrt/index.html) UPOS, XPOS and LAS, and on a NER task based on [RONEC](https://github.com/dumitrescustefan/ronec). Details, as well as more in-depth tests not shown here, are given in the dedicated [evaluation page](https://github.com/dumitrescustefan/Romanian-Transformers/tree/master/evaluation/README.md).
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The baseline is the [Multilingual BERT](https://github.com/google-research/bert/blob/master/multilingual.md) model ``bert-base-multilingual-(un)cased``, as at the time of writing it was the only available BERT model that works on Romanian.
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| Model | UPOS | XPOS | NER | LAS |
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|--------------------------------|:-----:|:------:|:-----:|:-----:|
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| bert-base-multilingual-uncased | 97.65 | 95.72 | 83.91 | 87.65 |
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| bert-base-romanian-uncased-v1 | **98.18** | **96.84** | **85.26** | **89.61** |
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### Corpus
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The model is trained on the following corpora (stats in the table below are after cleaning):
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| Corpus | Lines(M) | Words(M) | Chars(B) | Size(GB) |
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|----------- |:--------: |:--------: |:--------: |:--------: |
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| OPUS | 55.05 | 635.04 | 4.045 | 3.8 |
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| OSCAR | 33.56 | 1725.82 | 11.411 | 11 |
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| Wikipedia | 1.54 | 60.47 | 0.411 | 0.4 |
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| **Total** | **90.15** | **2421.33** | **15.867** | **15.2** |
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#### Acknowledgements
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- We'd like to thank [Sampo Pyysalo](https://github.com/spyysalo) from TurkuNLP for helping us out with the compute needed to pretrain the v1.0 BERT models. He's awesome!
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