update model card README.md

README.md

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+---
+license: mit
+tags:
+- summarization
+- generated_from_trainer
+datasets:
+- multi_news
+model-index:
+- name: gpt2-multi-news
+  results: []
+---
+
+<!-- This model card has been generated automatically according to the information the Trainer had access to. You
+should probably proofread and complete it, then remove this comment. -->
+
+# gpt2-multi-news
+
+This model is a fine-tuned version of [gpt2](https://huggingface.co/gpt2) on the multi_news dataset.
+It achieves the following results on the evaluation set:
+- Loss: 2.6300
+
+## Model description
+
+More information needed
+
+## Intended uses & limitations
+
+More information needed
+
+## Training and evaluation data
+
+More information needed
+
+## Training procedure
+
+### Training hyperparameters
+
+The following hyperparameters were used during training:
+- learning_rate: 5.6e-05
+- train_batch_size: 4
+- eval_batch_size: 4
+- seed: 42
+- optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
+- lr_scheduler_type: linear
+- num_epochs: 1
+
+### Training results
+
+| Training Loss | Epoch | Step | Validation Loss |
+|:-------------:|:-----:|:----:|:---------------:|
+| 2.7978        | 1.0   | 1250 | 2.6300          |
+
+
+### Framework versions
+
+- Transformers 4.28.0
+- Pytorch 2.0.0+cu117
+- Datasets 2.12.0
+- Tokenizers 0.13.3