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docs/source/en/model_doc/git.md
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docs/source/en/model_doc/git.md
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<!--Copyright 2022 The HuggingFace Team. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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specific language governing permissions and limitations under the License.
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⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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rendered properly in your Markdown viewer.
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-->
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*This model was published in HF papers on 2022-05-27 and contributed to Hugging Face Transformers on 2023-01-03.*
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# GIT
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## Overview
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The GIT model was proposed in [GIT: A Generative Image-to-text Transformer for Vision and Language](https://huggingface.co/papers/2205.14100) by
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Jianfeng Wang, Zhengyuan Yang, Xiaowei Hu, Linjie Li, Kevin Lin, Zhe Gan, Zicheng Liu, Ce Liu, Lijuan Wang. GIT is a decoder-only Transformer
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that leverages [CLIP](clip)'s vision encoder to condition the model on vision inputs besides text. The model obtains state-of-the-art results on
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image captioning and visual question answering benchmarks.
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The abstract from the paper is the following:
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*In this paper, we design and train a Generative Image-to-text Transformer, GIT, to unify vision-language tasks such as image/video captioning and question answering. While generative models provide a consistent network architecture between pre-training and fine-tuning, existing work typically contains complex structures (uni/multi-modal encoder/decoder) and depends on external modules such as object detectors/taggers and optical character recognition (OCR). In GIT, we simplify the architecture as one image encoder and one text decoder under a single language modeling task. We also scale up the pre-training data and the model size to boost the model performance. Without bells and whistles, our GIT establishes new state of the arts on 12 challenging benchmarks with a large margin. For instance, our model surpasses the human performance for the first time on TextCaps (138.2 vs. 125.5 in CIDEr). Furthermore, we present a new scheme of generation-based image classification and scene text recognition, achieving decent performance on standard benchmarks.*
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<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/git_architecture.jpg"
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alt="drawing" width="600"/>
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<small> GIT architecture. Taken from the <a href="https://huggingface.co/papers/2205.14100" target="_blank">original paper</a>. </small>
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This model was contributed by [nielsr](https://huggingface.co/nielsr).
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The original code can be found [here](https://github.com/microsoft/GenerativeImage2Text).
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## Usage tips
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- GIT is implemented in a very similar way to GPT-2, the only difference being that the model is also conditioned on `pixel_values`.
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## Resources
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A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with GIT.
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- Demo notebooks regarding inference + fine-tuning GIT on custom data can be found [here](https://github.com/NielsRogge/Transformers-Tutorials/tree/master/GIT).
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- See also: [Causal language modeling task guide](../tasks/language_modeling)
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If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we will review it.
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The resource should ideally demonstrate something new instead of duplicating an existing resource.
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## GitVisionConfig
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[[autodoc]] GitVisionConfig
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## GitVisionModel
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[[autodoc]] GitVisionModel
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- forward
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## GitConfig
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[[autodoc]] GitConfig
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- all
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## GitProcessor
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[[autodoc]] GitProcessor
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- __call__
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## GitModel
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[[autodoc]] GitModel
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- forward
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## GitForCausalLM
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[[autodoc]] GitForCausalLM
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- forward
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