# Finetune BERT for multiple tasks

**URL:** <https://discuss.huggingface.co/t/finetune-bert-for-multiple-tasks/103611>\
**Category:** 🤗Transformers\
**Created:** [August 22, 2024, 8:02pm UTC](https://discuss.huggingface.co/t/finetune-bert-for-multiple-tasks/103611 "2024-08-22T20:02:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mudi99](https://avatars.discourse-cdn.com/v4/letter/m/d9b06d/32.png) [@mudi99](https://discuss.huggingface.co/u/mudi99)\
**Post date:** [August 22, 2024, 8:02pm UTC](https://discuss.huggingface.co/t/finetune-bert-for-multiple-tasks/103611/1 "2024-08-22T20:02:24Z")

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I’m fine-tuning a BERT model to perform a rather complex task. It is supposed identify targets within the input string, perform regression on each of the targets and output

1. the start/end index of each identified target in the input
2. the regression values for each target

in a JSON format.

From my understanding, the training itself is pretty simple but to get the output in the desired format (multiple outputs based on predicted targets in a JSON format), I need to customize the model’s head.

So, i’m not really looking for a solution here but rather resources (tutorials, papers, videos) about how to do that. Thank you!

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**Author:** ![mahmutc](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/mahmutc/32/52583_2.png) [@mahmutc](https://discuss.huggingface.co/u/mahmutc)\
**Post date:** [August 23, 2024, 8:11am UTC](https://discuss.huggingface.co/t/finetune-bert-for-multiple-tasks/103611/2 "2024-08-23T08:11:48Z")

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hi @mudi99  
I don’t know if it’s exactly what you want but you can check it [GitHub - 1rgs/jsonformer: A Bulletproof Way to Generate Structured JSON from Language Models](https://github.com/1rgs/jsonformer).