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Update README.md
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README.md
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datasets:
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- c4
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model-index:
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- name: kiddothe2b/adhoc-
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results: []
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---
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# Hierarchical Attention Transformer (HAT) / adhoc-
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## Model description
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This is a Hierarchical Attention Transformer (HAT) model as presented in [An Exploration of Hierarchical Attention Transformers for Efficient Long Document Classification (Chalkidis et al., 2022)](https://arxiv.org/abs/xxx).
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The model has
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HAT use a hierarchical attention, which is a combination of segment-wise and cross-segment attention operations. You can think segments as paragraphs or sentences.
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## Intended uses & limitations
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You can use the raw model for masked language modeling, but it's mostly intended to be fine-tuned on a downstream task.
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See the [model hub](https://huggingface.co/models?filter=
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interests you.
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Note that this model is primarily aimed at being fine-tuned on tasks that use the whole document to make decisions, such as document classification, sequential sentence classification or question answering.
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```python
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from transformers import AutoTokenizer, AutoModelforSequenceClassification
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tokenizer = AutoTokenizer.from_pretrained("kiddothe2b/adhoc-
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doc_classifier = AutoModelforSequenceClassification(model='kiddothe2b/adhoc-
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```
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Note: If you wish to use a fully pre-trained HAT model, you have to use [kiddothe2b/
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## Limitations and bias
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datasets:
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- c4
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model-index:
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- name: kiddothe2b/adhoc-hierarchical-transformer-base-4096
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results: []
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---
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# Hierarchical Attention Transformer (HAT) / kiddothe2b/adhoc-hierarchical-transformer-base-4096
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## Model description
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This is a Hierarchical Attention Transformer (HAT) model as presented in [An Exploration of Hierarchical Attention Transformers for Efficient Long Document Classification (Chalkidis et al., 2022)](https://arxiv.org/abs/xxx).
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The model has been warm-started re-using the weights of RoBERTa [(Liu et al., 2019)](https://arxiv.org/abs/1907.11692), BUT has not been continued pre-trained. It supports sequences of length up to 4,096.
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HAT use a hierarchical attention, which is a combination of segment-wise and cross-segment attention operations. You can think segments as paragraphs or sentences.
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## Intended uses & limitations
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You can use the raw model for masked language modeling, but it's mostly intended to be fine-tuned on a downstream task.
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See the [model hub](https://huggingface.co/models?filter=hierarchical-transformer) to look for fine-tuned versions on a task that
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interests you.
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Note that this model is primarily aimed at being fine-tuned on tasks that use the whole document to make decisions, such as document classification, sequential sentence classification or question answering.
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```python
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from transformers import AutoTokenizer, AutoModelforSequenceClassification
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tokenizer = AutoTokenizer.from_pretrained("kiddothe2b/adhoc-hierarchical-transformer-base-4096", trust_remote_code=True)
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doc_classifier = AutoModelforSequenceClassification(model='kiddothe2b/adhoc-hierarchical-transformer-base-4096', trust_remote_code=True)
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```
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Note: If you wish to use a fully pre-trained HAT model, you have to use [kiddothe2b/hierarchical-transformer-base-4096](https://huggingface.co/kiddothe2b/hierarchical-transformer-base-4096).
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## Limitations and bias
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