Add evaluation results on samsum dataset

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Your model has been evaluated on the [samsum](https://huggingface.co/datasets/samsum) dataset by

@lewtun
, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-staging-eval-project-6fbfec76-7855038).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=samsum).\
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README.md

@@ -21,6 +21,39 @@ model-index:
     - name: Rouge1
       type: rouge
       value: 44.3313
+  - task:
+      type: summarization
+      name: Summarization
+    dataset:
+      name: samsum
+      type: samsum
+      config: samsum
+      split: test
+    metrics:
+    - name: ROUGE-1
+      type: rouge
+      value: 40.0386
+      verified: true
+    - name: ROUGE-2
+      type: rouge
+      value: 15.8501
+      verified: true
+    - name: ROUGE-L
+      type: rouge
+      value: 31.8084
+      verified: true
+    - name: ROUGE-LSUM
+      type: rouge
+      value: 36.0888
+      verified: true
+    - name: loss
+      type: loss
+      value: 2.1917073726654053
+      verified: true
+    - name: gen_len
+      type: gen_len
+      value: 18.1074
+      verified: true
 ---
 
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