Milan Straka
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Update the model card.
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README.md
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language: cs
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license: cc-by-nc-sa-4.0
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tags:
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- Czech
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- RoBERTa
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- ÚFAL
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# Model Card for RobeCzech
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# Model Details
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## Model Description
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RobeCzech is a monolingual RoBERTa language representation model trained on Czech data.
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- **Developed by:** Institute of Formal and Applied Linguistics, Charles University, Prague (UFAL)
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- **Shared by
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- **Model type:** Fill-Mask
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- **Language(s) (NLP):** cs
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- **License:** cc-by-nc-sa-4.0
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# Uses
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## Direct Use
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Fill-Mask tasks.
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## Downstream Use
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Morphological tagging and lemmatization, dependency parsing, named entity
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More information needed
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# Bias, Risks, and Limitations
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Significant research has explored bias and fairness issues with language models
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## Recommendations
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Users (both direct and downstream) should be made aware of the risks, biases and
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# Training Details
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## Training Data
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The model creators note in the [associated paper](https://arxiv.org/pdf/2105.11314.pdf):
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> We trained RobeCzech on a collection of the following publicly available texts:
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> All these corpora contain whole documents, even if the SYN v4 is
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## Training Procedure
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### Preprocessing
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The texts are tokenized into subwords with a byte-level BPE (BBPE)
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### Speeds, Sizes, Times
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The model creators note in the [associated paper](https://arxiv.org/pdf/2105.11314.pdf):
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> The training batch size is 8,192 and each training batch consists of sentences
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# Evaluation
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## Testing Data, Factors & Metrics
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### Testing Data
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The model creators note in the [associated paper](https://arxiv.org/pdf/2105.11314.pdf):
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> We evaluate RobeCzech in five NLP tasks, three of them leveraging frozen
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More information needed
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### Metrics
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Morphosynt PDT3.5 (POS) | Morphosynt PDT3. (LAS) | Morphosynt UD2.3 (XPOS) | Morphosynt UD2.3 ( LAS) |
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NER CNEC1.1 (nested) | NER CNEC1.1 (flat) | Semant. PTG (Avg) | Sentim. CDF (F1) |
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## Results
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| Model | Morphosynt PDT3.5 (POS) (LAS) | Morphosynt UD2.3 (XPOS) (LAS) | NER CNEC1.1 (nested) (flat) | Semant. PTG (Avg) (F1) |
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|-----------|---------------------------------|--------------------------------|------------------------------|-------------------------|
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| RobeCzech | 98.50 91.42 | 98.31 93.77 | 87.82 87.47 | 92.36 80.13 |
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# Model Examination
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More information needed
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# Environmental Impact
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- **Hardware Type:** 8 QUADRO P5000 GPU
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- **Hours used:** 2190 (~3 months)
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- **Carbon Emitted:** More information needed
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# Technical Specifications [optional]
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## Model Architecture and Objective
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The model creators note in the [associated paper](https://arxiv.org/pdf/2105.11314.pdf):
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We employ the standard text classification architecture consisting of a BERT encoder, followed by a softmax-activated classification layer processing the computed embedding of the given document text obtained from the CLS token embedding from the last layer
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## Compute Infrastructure
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### Hardware
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8 QUADRO P5000 GPU
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### Software
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More information needed
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# Citation
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**APA:**
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```
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# Glossary [optional]
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# More Information [optional]
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More information needed
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# Model Card Authors [optional]
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Institute of Formal and Applied Linguistics, Charles University, Prague (UFAL), in collaboration with Ezi Ozoani and the Hugging Face Team.
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# Model Card Contact
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More information needed
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# How to Get Started with the Model
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Use the code below to get started with the model.
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<details>
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<summary> Click to expand </summary>
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```python
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from transformers import AutoTokenizer, AutoModelForMaskedLM
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tokenizer = AutoTokenizer.from_pretrained("ufal/robeczech-base")
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model = AutoModelForMaskedLM.from_pretrained("ufal/robeczech-base")
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```
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</details>
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language: cs
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license: cc-by-nc-sa-4.0
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tags:
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- RobeCzech
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- Czech
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- RoBERTa
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- ÚFAL
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# Model Card for RobeCzech
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# Model Details
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## Model Description
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RobeCzech is a monolingual RoBERTa language representation model trained on Czech data.
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- **Developed by:** Institute of Formal and Applied Linguistics, Charles University, Prague (UFAL)
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- **Shared by:** Hugging Face and [LINDAT/CLARIAH-CZ](https://hdl.handle.net/11234/1-3691)
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- **Model type:** Fill-Mask
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- **Language(s) (NLP):** cs
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- **License:** cc-by-nc-sa-4.0
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- **Model Architecture:** RoBERTa
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- **Resources for more information:**
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- [RobeCzech: Czech RoBERTa, a Monolingual Contextualized Language Representation Model](https://doi.org/10.1007/978-3-030-83527-9_17)
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- [arXiv preprint is also available](https://arxiv.org/abs/2105.11314)
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# Uses
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## Direct Use
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Fill-Mask tasks.
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## Downstream Use
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Morphological tagging and lemmatization, dependency parsing, named entity
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recognition, and semantic parsing.
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# Bias, Risks, and Limitations
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Significant research has explored bias and fairness issues with language models
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(see, e.g., [Sheng et al. (2021)](https://aclanthology.org/2021.acl-long.330.pdf)
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and [Bender et al. (2021)](https://dl.acm.org/doi/pdf/10.1145/3442188.3445922)).
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Predictions generated by the model may include disturbing and harmful
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stereotypes across protected classes; identity characteristics; and sensitive,
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social, and occupational groups.
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## Recommendations
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Users (both direct and downstream) should be made aware of the risks, biases and
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limitations of the model. More information needed for further recommendations.
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# Training Details
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## Training Data
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The model creators note in the [associated paper](https://arxiv.org/pdf/2105.11314.pdf):
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> We trained RobeCzech on a collection of the following publicly available texts:
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> - SYN v4, a large corpus of contemporary written Czech, 4,188M tokens;
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> - Czes, a collection of Czech newspaper and magazine articles, 432M tokens;
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> - documents with at least 400 tokens from the Czech part of the web corpus.W2C , tokenized with MorphoDiTa, 16M tokens;
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> - plain texts extracted from Czech Wikipedia dump 20201020 using WikiEx-tractor, tokenized with MorphoDiTa, 123M tokens
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> All these corpora contain whole documents, even if the SYN v4 is
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> block-shuffled (blocks with at most 100 words respecting sentence boundaries
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> are permuted in a document) and in total contain 4,917M tokens.
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## Training Procedure
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### Preprocessing
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The texts are tokenized into subwords with a byte-level BPE (BBPE) tokenizer,
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which was trained on the entire corpus and we limit its vocabulary size to
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52,000 items.
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### Speeds, Sizes, Times
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The model creators note in the [associated paper](https://arxiv.org/pdf/2105.11314.pdf):
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> The training batch size is 8,192 and each training batch consists of sentences
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> sampled contiguously, even across document boundaries, such that the total
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> length of each sample is at most 512 tokens (FULL-SENTENCES setting). We use
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> Adam optimizer with β1 = 0.9 and β2 = 0.98 to minimize the masked
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> language-modeling objective.
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### Software Used
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The [Fairseq](https://github.com/facebookresearch/fairseq/tree/main/examples/roberta)
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implementation was used for training.
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# Evaluation
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## Testing Data, Factors & Metrics
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### Testing Data
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The model creators note in the [associated paper](https://arxiv.org/pdf/2105.11314.pdf):
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> contextualized word embeddings, two approached with fine-tuning:
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> - morphological analysis and lemmatization: frozen contextualized word embeddings,
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> - dependency parsing: frozen contextualized word embeddings,
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> - named entity recognition: frozen contextualized word embeddings,
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> - semantic parsing: fine-tuned,
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> - sentiment analysis: fine-tuned.
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## Results
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| Model | Morphosynt PDT3.5 (POS) (LAS) | Morphosynt UD2.3 (XPOS) (LAS) | NER CNEC1.1 (nested) (flat) | Semant. PTG (Avg) (F1) |
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|-----------|---------------------------------|--------------------------------|------------------------------|-------------------------|
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| RobeCzech | 98.50 91.42 | 98.31 93.77 | 87.82 87.47 | 92.36 80.13 |
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# Environmental Impact
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- **Hardware Type:** 8 QUADRO P5000 GPU
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- **Hours used:** 2190 (~3 months)
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# Citation
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```
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@InProceedings{10.1007/978-3-030-83527-9_17,
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author={Straka, Milan and N{\'a}plava, Jakub and Strakov{\'a}, Jana and Samuel, David},
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editor={Ek{\v{s}}tein, Kamil and P{\'a}rtl, Franti{\v{s}}ek and Konop{\'i}k, Miloslav},
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title={{RobeCzech: Czech RoBERTa, a Monolingual Contextualized Language Representation Model}},
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booktitle="Text, Speech, and Dialogue",
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year="2021",
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publisher="Springer International Publishing",
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address="Cham",
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pages="197--209",
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isbn="978-3-030-83527-9"
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}
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```
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# How to Get Started with the Model
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Use the code below to get started with the model.
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<details>
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<summary> Click to expand </summary>
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```python
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from transformers import AutoTokenizer, AutoModelForMaskedLM
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tokenizer = AutoTokenizer.from_pretrained("ufal/robeczech-base")
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model = AutoModelForMaskedLM.from_pretrained("ufal/robeczech-base")
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```
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</details>
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