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--- |
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license: apache-2.0 |
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language: |
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- it |
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datasets: |
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- squad_it |
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widget: |
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- text: quale libro fu scritto da alessandro manzoni? |
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context: alessandro manzoni pubblicò la prima versione de i promessi sposi nel 1827 |
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- text: in quali competizioni gareggia la ferrari? |
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context: la scuderia ferrari è una squadra corse italiana di formula 1 con sede a maranello |
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- text: quale sport è riferito alla serie a? |
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context: il campionato di serie a è la massima divisione professionistica del campionato italiano di calcio maschile |
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model-index: |
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- name: osiria/bert-italian-cased-question-answering |
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results: |
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- task: |
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type: question-answering |
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name: Question Answering |
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dataset: |
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name: squad_it |
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type: squad_it |
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metrics: |
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- type: exact-match |
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value: 0.6560 |
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name: Exact Match |
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- type: f1 |
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value: 0.7716 |
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name: F1 |
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pipeline_tag: question-answering |
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--- |
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<body> |
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<span class="vertical-text" style="background-color:lightgreen;border-radius: 3px;padding: 3px;"> </span> |
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<br> |
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<span class="vertical-text" style="background-color:orange;border-radius: 3px;padding: 3px;"> Task: Question Answering</span> |
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<br> |
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<span class="vertical-text" style="background-color:lightblue;border-radius: 3px;padding: 3px;"> Model: BERT</span> |
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<br> |
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<span class="vertical-text" style="background-color:tomato;border-radius: 3px;padding: 3px;"> Lang: IT</span> |
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<br> |
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<span class="vertical-text" style="background-color:lightgrey;border-radius: 3px;padding: 3px;"> Type: Uncased</span> |
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<br> |
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<span class="vertical-text" style="background-color:#CF9FFF;border-radius: 3px;padding: 3px;"> </span> |
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</body> |
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-------------------------------------------------------------------------------------------------- |
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<h3>Model description</h3> |
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This is a <b>BERT</b> <b>[1]</b> uncased model for the <b>Italian</b> language, fine-tuned for <b>Extractive Question Answering</b> on the [SQuAD-IT](https://huggingface.co/datasets/squad_it) dataset <b>[2]</b> |
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If you are looking for a more accurate (but slightly heavier) model, you can refer to: https://huggingface.co/osiria/deberta-italian-question-answering |
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<b>update: version 2.0</b> |
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The 2.0 version further improves the performances by exploiting a 2-phases fine-tuning strategy: the model is first fine-tuned on the English SQuAD v2 (1 epoch, 20% warmup ratio, and max learning rate of 3e-5) then further fine-tuned on the Italian SQuAD (2 epochs, no warmup, initial learning rate of 3e-5) |
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In order to maximize the benefits of the multilingual procedure, [bert-base-multilingual-uncased](https://huggingface.co/bert-base-multilingual-uncased) is used as a pre-trained model. When the double fine-tuning is completed, the embedding layer is then compressed as in [bert-base-italian-cased](https://huggingface.co/osiria/bert-base-italian-cased) to obtain a mono-lingual model size |
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<h3>Training and Performances</h3> |
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The model is trained to perform question answering, given a context and a question (under the assumption that the context contains the answer to the question). It has been fine-tuned for Extractive Question Answering, using the SQuAD-IT dataset, for 2 epochs with a linearly decaying learning rate starting from 3e-5, maximum sequence length of 384 and document stride of 128. |
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<br>The dataset includes 54.159 training instances and 7.609 test instances |
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The performances on the test set are reported in the following table: |
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| EM | F1 | |
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| ------ | ------ | |
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| 65.60 | 77.16 | |
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Testing notebook: https://huggingface.co/osiria/bert-italian-cased-question-answering/blob/main/osiria_bert_italian_cased_qa_evaluation.ipynb |
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<h3>Quick usage</h3> |
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```python |
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from transformers import BertTokenizerFast, BertForQuestionAnswering |
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from transformers import pipeline |
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tokenizer = BertTokenizerFast.from_pretrained("osiria/bert-italian-uncased-question-answering") |
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model = BertForQuestionAnswering.from_pretrained("osiria/bert-italian-uncased-question-answering") |
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pipeline_qa = pipeline("question-answering", model = model, tokenizer = tokenizer) |
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pipeline_qa(context = "alessandro manzoni è nato a milano nel 1785", question = "dove è nato manzoni?") |
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{'score': 0.9905025959014893, 'start': 28, 'end': 34, 'answer': 'milano'} |
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``` |
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<h3>References</h3> |
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[1] https://arxiv.org/abs/1810.04805 |
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[2] https://link.springer.com/chapter/10.1007/978-3-030-03840-3_29 |
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<h3>Limitations</h3> |
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This model was trained SQuAD-IT which is mainly a machine translated version of the original SQuAD v1.1. This means that the quality of the training set is limited by the machine translation. |
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Moreover, the model is meant to answer questions under the assumption that the required information is actually contained in the given context (which is the underlying assumption of SQuAD v1.1). |
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If the assumption is violated, the model will try to return an answer in any case, which is going to be incorrect. |
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<h3>License</h3> |
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The model is released under <b>Apache-2.0</b> license |
