Add evaluation results on the samsum config and test split of samsum

Beep boop, I am a bot from Hugging Face's automatic model evaluator 👋!\
Your model has been evaluated on the samsum config and test split of the [samsum](https://huggingface.co/datasets/samsum) dataset by

@sasha

, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-eval-samsum-samsum-52efcb-93192145784).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=samsum).\
Evaluate your model on more datasets [here](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=samsum).

README.md

@@ -1,12 +1,54 @@
 ---
 language: en
+license: apache-2.0
 tags:
 - summarization
-license: apache-2.0
 datasets:
 - cnn_dailymail
 - xsum
 thumbnail: https://huggingface.co/front/thumbnails/distilbart_medium.png
+model-index:
+- name: sshleifer/distilbart-xsum-12-6
+  results:
+  - task:
+      type: summarization
+      name: Summarization
+    dataset:
+      name: samsum
+      type: samsum
+      config: samsum
+      split: test
+    metrics:
+    - type: rouge
+      value: 20.3249
+      name: ROUGE-1
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiZTc2YzZmZmIwMGViZDk5NGY3Y2EwZTZkNWQ3N2FjNjM0MzdjYjI4N2UyMTYzYjg2NWNlZGFmZjg3ZjAzY2M4MSIsInZlcnNpb24iOjF9.FSB_urEdPUK-S8wjkAuefy4v3DGym2UHv4xDsnyHc0D2n3LXSc7SbcrMmGNhqIUbXk03hVCv_vszq5jqzHN2BQ
+    - type: rouge
+      value: 3.5106
+      name: ROUGE-2
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiY2FhMDc5YjQ3NWQ4YjM2MDZlYTJkODMxNmY1MjRlMjBiYmU1ODE4MWM0YmVmNjg5YWNkOGQ2NzIwYTExZjExZiIsInZlcnNpb24iOjF9.xP1OJrqJuBLAr4okD9gpjQWwOddgJc72ve7wgaXWyZBAHUdY0eC63MWg-Iv8WsuCM_AxaXCjY4EFDYqtKGSYCw
+    - type: rouge
+      value: 15.3062
+      name: ROUGE-L
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiZjcyM2NhZDJjNjIyNDEwOTdjNzczNzQwMDZiZThjNmY0NDcyNmIyYmE4ODgyOWY3YTdhM2YyYzI2MWY1NDg0YiIsInZlcnNpb24iOjF9.63qid3xnpX0SVEqsjRrWcc5eukbKmZ5nUGdppwzzPoIEsr6keuhBATzxIjLIQhDceXwrLoY408f5tcKa-s6ADQ
+    - type: rouge
+      value: 16.9328
+      name: ROUGE-LSUM
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiNGFhMDg5ZGFmZTFiMTkwNWM5ZDY4ODFiNDM0ZjVlYzgwYTQ2NDU3OGI1YmRkNzVjODE4OGU0YTA0MDZkNjljYSIsInZlcnNpb24iOjF9.Rk8JUhDQq1284_eD_HQdR8RQvIJ76nOUjfjENQ5qbhfB8tnQDoqBaXnusVR9768Qi1cEdoKbX4zlVGJLUvVWDQ
+    - type: loss
+      value: 4.240785598754883
+      name: loss
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiYjJmOTNmM2E2NzUzMjQ3YTU5YWI1OTg1NmMyZDQyNDAyMTc3Y2E3ZjY0M2RjMzIyNGNiMDE0ZWY0YzkxZjQ0NSIsInZlcnNpb24iOjF9.NqjYH3-SUEOO-jZX9giulkdpW5wue6nAtzMWhYfVpfQdQ7S_Xouf7fvakXkXCAO-APpGnW4FcdSjcafCgwy6CQ
+    - type: gen_len
+      value: 20.1758
+      name: gen_len
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiMWJiNjAwZGVmMDQxODY0NGYwOGE4ZGQyNWQ4NzdkMjA4MWQ0MmM0OWY2NTRhMzk1MTNiYmQ5OGJhMzYwYzc1OCIsInZlcnNpb24iOjF9.XPL3qXhy9ud7P904zkFWWrvfDrNXmmXIYeCBEnQyTilpAoqyrI2v1FCoio9NhWAecJT7-2iC4MAxEOG_9yj9DQ
 ---
 
 ### Usage