Add evaluation results on the default config and test split of xsum

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

@pszemraj
, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-eval-xsum-default-79b8e9-36674145028).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=xsum).\
Evaluate your model on more datasets [here](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=xsum).

README.md

@@ -1,18 +1,57 @@
 ---
+language:
+- en
 license: apache-2.0
+library_name: transformers
 tags:
 - generated_from_trainer
 - stacked summaries
 - xsum
 datasets:
 - stacked-summaries/stacked-xsum-1024
+pipeline_tag: summarization
 model-index:
 - name: flan-t5-large-stacked-XSUM-1024-WIP-2p8-850-stacked-xsum-1024-evaluated
-  results: []
-language:
-- en
-library_name: transformers
-pipeline_tag: summarization
+  results:
+  - task:
+      type: summarization
+      name: Summarization
+    dataset:
+      name: xsum
+      type: xsum
+      config: default
+      split: test
+    metrics:
+    - type: rouge
+      value: 39.3722
+      name: ROUGE-1
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiN2YzZmMyZjk4OTdlMmJiMWY4NzZmNTMwMTFkZmFiNjE3ZjE2MWY2ODY3MGZkYjdiNzBkNDAyMmE2ODRmNzA3YyIsInZlcnNpb24iOjF9.6OEAAa9Hy9xxkAsXyyxylTPoerL8OMg2Cc_jP0KGA25ZQCF3LLZFMrSyi93AMoqBfRCcdaJ7ypE2b1m2YVNcAw
+    - type: rouge
+      value: 17.5791
+      name: ROUGE-2
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiY2IwYjBiYTUzNjZlMjdjNjI5NmVjNGU3N2E0MzdhYmIxODI1NTM5N2I4MTcwMGIyNWRkZjhmM2UzZDY2ZWJkYSIsInZlcnNpb24iOjF9.p30-YNYekLdiVwNFGmm3-FJP0iBQgOpkmyxjM8xlNGRGc2iihhNAwe4ewRFYmkRSjnbrHjoGKERBq_-3DzE1Cw
+    - type: rouge
+      value: 32.6528
+      name: ROUGE-L
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiNjg0ZDIyMDUwYzFiZjMwYzUxOTg4MDlmODcwMTdiNzFlNDQ4NDViYTgzNmMwYmRlODgzODM0MjdlMzU3NGU3MCIsInZlcnNpb24iOjF9.kIYuS58Tws-oEyuneymCC4by4yfI0zsq2uHOUYNfEHmGYdetsgFzzBuVmTHa37KRD30MuDk-RPCy-kam25CVCg
+    - type: rouge
+      value: 32.6438
+      name: ROUGE-LSUM
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiOWJlMDlhOTQ4ZjI5ZWZkZTNmNzZmNGI0NzhkYmYwZGUxNDZkYzFiYTFmOGIxZTgxZWNiMGQ3YzY2NTUwYzhkYyIsInZlcnNpb24iOjF9.S4ioChbfEA1hDf4jnRBCTUk9oLX9bX82We6W4SzsLmT3BAYe1wBPgfpDvSUQ1PQhZk5IaDwfKtKF_z1coqBVDQ
+    - type: loss
+      value: 1.4964560270309448
+      name: loss
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiOTViZTkwMzQ3MGNlZDJhNTk3NDE5NzBkMDZjMGEyNzNkZTI4ZmJhMWRlYTMwNmRmN2JhNzdkNTQ3N2FlODBmNyIsInZlcnNpb24iOjF9.lNWUw12R20SwZMZEuUnxYsWrkFBNoU9_5ZOiuFF5aT9QsHJC-FSmZ8DXTdVudv6J-BoeA-l5KYowr7GJfbzlDQ
+    - type: gen_len
+      value: 18.7302
+      name: gen_len
+      verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiZWM2MWQzN2YyY2U0NWZhZGFkMjk0MzFlMTA1YTgxYzAzYjhhZmVmZDI5Mzk4ODgzOGU1NjVhNTk3NmYyNzhkMSIsInZlcnNpb24iOjF9.bL56u1G46OIwdIqZJ-6og_T2yCKFTXrlPQeguZps3ixXokfKqlfCDxz3641yKA3AdMlLe5lDcN3UQReHtiWwBg
 ---