Add evaluation results on the default config of xsum

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

@dishant16

, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-staging-eval-project-xsum-6cd6bf3a-11245505).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=xsum).\
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README.md

@@ -7,7 +7,40 @@ metrics:
 - rouge
 model-index:
 - name: summarization_ilpost
-  results: []
+  results:
+  - task:
+      type: summarization
+      name: Summarization
+    dataset:
+      name: xsum
+      type: xsum
+      config: default
+      split: test
+    metrics:
+    - name: ROUGE-1
+      type: rouge
+      value: 12.1495
+      verified: true
+    - name: ROUGE-2
+      type: rouge
+      value: 1.6326
+      verified: true
+    - name: ROUGE-L
+      type: rouge
+      value: 10.493
+      verified: true
+    - name: ROUGE-LSUM
+      type: rouge
+      value: 10.5515
+      verified: true
+    - name: loss
+      type: loss
+      value: 2.5110762119293213
+      verified: true
+    - name: gen_len
+      type: gen_len
+      value: 18.9924
+      verified: true
 datasets:
 - ARTeLab/ilpost
 ---