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README.md
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---
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library_name: transformers
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tags: []
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---
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# Model Card for STEP
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<!-- Provide a quick summary of what the model is/does. -->
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This model is pre-trained to perform (random) syntactic transformations of English sentences. The prefix given to the model decides, which syntactic transformation to apply.
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See [Strengthening Structural Inductive Biases by Pre-training to Perform Syntactic Transformations](https://arxiv.org/abs/2407.04543) for full details.
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## Model Details
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### Model Description
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<!-- Provide a longer summary of what this model is. -->
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This is the model card of a 🤗 transformers model that has been pushed on the Hub. This model card has been automatically generated.
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- **Developed by:** Matthias Lindemann
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- **Funded by [optional]:** UKRI, Huawei, Dutch National Science Foundation
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- **Model type:** Sequence-to-Sequence model
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- **Language(s) (NLP):** English
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- **License:** [More Information Needed]
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- **Finetuned from model:** T5-Base
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### Model Sources [optional]
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<!-- Provide the basic links for the model. -->
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- **Repository:** https://github.com/namednil/step
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- **Paper:** [Strengthening Structural Inductive Biases by Pre-training to Perform Syntactic Transformations](https://arxiv.org/abs/2407.04543)
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## Uses
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Syntax-sensitive sequence-to-sequence for English such as passivization, semantic parsing, question formation, ...
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<!-- Address questions around how the model is intended to be used, including the foreseeable users of the model and those affected by the model. -->
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### Direct Use
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This model needs to be fine-tuned as it implements random syntactic transformations.
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## Bias, Risks, and Limitations
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The model was exposed to the C4 corpus (pre-training data of T5) and is based on T5 and hence likely inherits biases from that.
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<!-- This section is meant to convey both technical and sociotechnical limitations. -->
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### Recommendations
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<!-- This section is meant to convey recommendations with respect to the bias, risk, and technical limitations. -->
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Users (both direct and downstream) should be made aware of the risks, biases and limitations of the model. More information needed for further recommendations.
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## Model Examination [optional]
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We identified the following interpretable transformation look-up heads (see paper for details) for UD relations (in the format (layer, head) both with 0-based indexing):
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```python
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{'cop': [(0, 3), (4, 11), (7, 11), (8, 11), (9, 5), (9, 6), (10, 5), (11, 11)],
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'expl': [(0, 7), (7, 11), (8, 2), (8, 11), (9, 6), (9, 7), (11, 11)],
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'amod': [(4, 6), (6, 6), (7, 11), (8, 0), (8, 11), (9, 5), (11, 11)],
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'compound': [(4, 6), (6, 6), (7, 6), (7, 11), (8, 11), (9, 5), (9, 7), (9, 11), (11, 11)],
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'det': [(4, 6), (7, 11), (8, 11), (9, 5), (9, 6), (10, 5)],
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'nmod:poss': [(4, 6), (4, 11), (7, 11), (8, 11), (9, 5), (9, 6), (11, 11)],
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'advmod': [(4, 11), (6, 6), (7, 11), (8, 11), (9, 5), (9, 6), (9, 11), (11, 11)],
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'aux': [(4, 11), (7, 11), (8, 11), (9, 5), (9, 6), (10, 5), (11, 11)],
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'mark': [(4, 11), (8, 11), (9, 5), (9, 6), (11, 11)],
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'fixed': [(5, 5), (8, 2), (8, 6), (9, 4), (9, 6), (10, 1), (10, 4), (10, 6), (10, 11), (11, 11)],
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'compound:prt': [(6, 2), (6, 6), (7, 11), (8, 2), (8, 6), (9, 4), (9, 6), (10, 4), (10, 6),
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(10, 11), (11, 11)],
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'acl': [(6, 6), (7, 11), (8, 2), (9, 4), (10, 6), (10, 11), (11, 11)],
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'nummod': [(6, 6), (7, 11), (8, 11), (9, 6), (11, 11)],
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'flat': [(6, 11), (7, 11), (8, 2), (8, 11), (9, 4), (10, 6), (10, 11), (11, 11)],
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'aux:pass': [(7, 11), (8, 11), (9, 5), (9, 6), (10, 5), (11, 11)],
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'iobj': [(7, 11), (10, 4), (10, 11)],
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'nsubj': [(7, 11), (8, 11), (9, 5), (9, 6), (9, 11), (11, 11)],
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'obj': [(7, 11), (10, 4), (10, 6), (10, 11), (11, 11)],
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'obl:tmod': [(7, 11), (9, 4), (10, 4), (10, 6), (11, 11)], 'case': [(8, 11), (9, 5)],
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'cc': [(8, 11), (9, 5), (9, 6), (11, 11)],
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'obl:npmod': [(8, 11), (9, 6), (9, 11), (10, 6), (11, 11)],
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'punct': [(8, 11), (9, 6), (10, 6), (10, 11), (11, 5)], 'csubj': [(9, 11), (10, 6), (11, 11)],
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'nsubj:pass': [(9, 11), (10, 6), (11, 11)], 'obl': [(9, 11), (10, 6)], 'acl:relcl': [(10, 6)],
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'advcl': [(10, 6), (11, 11)], 'appos': [(10, 6), (10, 11), (11, 11)], 'ccomp': [(10, 6)],
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'conj': [(10, 6)], 'nmod': [(10, 6), (10, 11)], 'vocative': [(10, 6)],
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'xcomp': [(10, 6), (10, 11)]}
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```
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## Environmental Impact
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- **Hardware Type:** Nvidia 2080 TI
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- **Hours used:** 30
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## Technical Specifications
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### Model Architecture and Objective
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T5-Base, 12 layers, hidden dimensionality of 768.
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## Citation
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<!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
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**BibTeX:**
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```
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@misc{lindemann2024strengtheningstructuralinductivebiases,
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title={Strengthening Structural Inductive Biases by Pre-training to Perform Syntactic Transformations},
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author={Matthias Lindemann and Alexander Koller and Ivan Titov},
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year={2024},
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eprint={2407.04543},
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archivePrefix={arXiv},
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primaryClass={cs.CL},
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url={https://arxiv.org/abs/2407.04543},
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}
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```
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