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--- |
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language: ro |
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tags: |
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- bert |
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- fill-mask |
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license: mit |
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--- |
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# sentence-bert-base-romanian-uncased-v1 |
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The BERT **base**, **uncased** model for Romanian, finetuned on RO_MNLI dataset (translated entire MNLI dataset from English to Romanian)  |
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### How to use |
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```python |
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from sentence_transformers import SentenceTransformer |
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import numpy as np |
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# Inițializăm modelul |
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model = SentenceTransformer("iliemihai/sentence-bert-base-romanian-uncased-v1") |
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# Definim propozițiile |
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sentences = [ |
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"Un tren își începe călătoria către destinație.", |
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"O locomotivă pornește zgomotos spre o stație îndepărtată.", |
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"Un muzician cântă la un saxofon impresionant.", |
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"Un saxofonist evocă melodii suave sub lumina lunii.", |
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"O bucătăreasă presară condimente pe un platou cu legume.", |
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"Un chef adaugă un strop de mirodenii peste o salată colorată.", |
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"Un jongler își aruncă mingile colorate în aer.", |
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"Un artist de circ jonglează cu măiestrie sub reflectoare.", |
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"Un artist pictează un peisaj minunat pe o pânză albă.", |
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"Un pictor redă frumusețea naturii pe pânza sa strălucitoare." |
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] |
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# Obținem embeddings pentru fiecare propoziție |
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embeddings = model.encode(sentences) |
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# Calculăm similaritatea semantică folosind similaritatea cosine |
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similarities = np.dot(embeddings, embeddings.T) / (np.linalg.norm(embeddings, axis=1)[:, np.newaxis] * np.linalg.norm(embeddings, axis=1)[np.newaxis, :]) |
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# Identificăm cea mai similară propoziție pentru fiecare propoziție, excluzând similaritatea cu sine însăși |
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most_similar_indices = np.argmax(similarities - np.eye(len(sentences)), axis=1) |
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most_similar_sentences = [(sentences[i], sentences[most_similar_indices[i]], similarities[i, most_similar_indices[i]]) for i in range(len(sentences))] |
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print(most_similar_sentences) |
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``` |
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Remember to always sanitize your text! Replace ``s`` and ``t`` cedilla-letters to comma-letters with : |
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``` |
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text = text.replace("ţ", "ț").replace("ş", "ș").replace("Ţ", "Ț").replace("Ş", "Ș") |
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``` |
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because the model was **NOT** trained on cedilla ``s`` and ``t``s. If you don't, you will have decreased performance due to ``<UNK>``s and increased number of tokens per word. |
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### Parameters: |
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| Parameter | Value | |
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|------------------|-------| |
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| Batch size | 16 | |
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| Training steps | 256k | |
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| Warmup steps | 500 | |
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| Uncased | True | |
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| Max. Seq. Length | 512 | |
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| Loss function | Contrastive Loss | |
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### Evaluation |
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Evaluation is performed on Romaian STSb dataset |
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| Model | Spearman | Pearson | |
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|--------------------------------|:-----:|:------:| |
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| bert-base-romanian-uncased-v1 | 0.8086 | 0.8159 | |
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| sentence-bert-base-romanian-uncased-v1 | **0.8393** | **0.8387** | |
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### Corpus |
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#### Pretraining |
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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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#### Finetuning |
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The model is finetune on the RO_MNLI dataset (translated entire MNLI dataset from English to Romanian and select only contradiction and entailment pairs, ~ 256k sentence pairs). |
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### Citation |
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Paper coming soon |
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#### Acknowledgements |
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- We'd like to thank [Stefan Dumitrescu](https://github.com/dumitrescustefan) and [Andrei Marius Avram](https://github.com/avramandrei) for pretraining the v1.0 BERT models! |
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