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license: apache-2.0
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---
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---
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license: apache-2.0
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language:
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- sr
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metrics:
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- accuracy
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- wer
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library_name: transformers
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tags:
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- legal
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---
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# BERTić-COMtext-SR-legal-MSD-ekavica
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**BERTić-COMtext-SR-legal-MSD-ekavica** is a variant of the [BERTić](https://huggingface.co/classla/bcms-bertic) model, fine-tuned on the task of morphosyntactic (MSD) tag prediction in Serbian legal texts written in the Ekavian pronunciation.
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The model was fine-tuned for 15 epochs on the Ekavian variant of the [COMtext.SR.legal](https://github.com/ICEF-NLP/COMtext.SR) dataset.
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# Benchmarking
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This model was evaluated on the tasks of MSD prediction and lemmatization of Serbian legal texts.
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Lemmatization was performed using the predicted MSD tags and the [srLex](http://hdl.handle.net/11356/1233) inflectional lexicon.
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Accuracy and Word Error Rate were used as evaluation metrics.
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This model was compared to:
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- The [CLASSLA](http://pypi.org/project/classla/) library
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- A variant of [BERTić](https://huggingface.co/classla/bcms-bertic) fine-tuned for MSD prediction using the [SETimes.SR 2.0](http://hdl.handle.net/11356/1843) corpus of newswire texts
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- [SrBERTa](http://huggingface.co/nemanjaPetrovic/SrBERTa), a model specially trained on Serbian legal texts
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All large language models were fine-tuned for 15 epochs.
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CLASSLA and BERTić-SETimes were directly tested on the entire COMtext.SR.legal.ekavica corpus.
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BERTić-COMtext-SR-legal-MSD-ekavica and SrBERTa were fine-tuned and evaluated on the COMtext.SR.legal.ekavica corpus using 10-fold CV.
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The code and data to run these experiments is available on the [COMtext.SR GitHub repository](https://github.com/ICEF-NLP/COMtext.SR).
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## Results
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| Model | MSD ACC | MSD WER | Lemma ACC | Lemma WER |
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| --------------------------------------------------------- | -------- | ---------- | --------- | ---------- |
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| CLASSLA-SR (gold tokens) | 0.9144 | 0.0856 | 0.9432 | 0.0568 |
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| *CLASSLA-SR (CLASSLA tokenizer)* | / | *0.0983* | / | *0.0739* |
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| BERTić-SETimes (gold tokens) | 0.9231 | 0.0768 | 0.9649 | 0.0351 |
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| *BERTić-SETimes.SR (CLASSLA tokenizer)* | / | *0.0884* | / | *0.0542* |
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| BERTić-COMtext-SR-legal-MSD-ekavica (gold tokens) |**0.9674**| **0.0326** |**0.9666** | **0.0334** |
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| *BERTić-COMtext-SR-legal-MSD-ekavica (CLASSLA tokenizer)* | / |***0.0447***| / |***0.0526***|
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| SrBERTa (gold tokens) | 0.9288 | 0.0712 | 0.9391 | 0.0609 |
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| *SrBERTa (CLASSLA tokenizer)* | / | *0.0851* | / | *0.0819* |
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