[Refactor] Migrate anli tasks to yaml

lm_eval/tasks/anli/README.md

+# Task-name
+
+### Paper
+
+Title: `Adversarial NLI: A New Benchmark for Natural Language Understanding`
+
+Abstract: `https://arxiv.org/pdf/1910.14599.pdf`
+
+Adversarial NLI (ANLI) is a dataset collected via an iterative, adversarial
+human-and-model-in-the-loop procedure. It consists of three rounds that progressively
+increase in difficulty and complexity, and each question-answer includes annotator-
+provided explanations.
+
+Homepage: `https://github.com/facebookresearch/anli`
+
+
+### Citation
+
+```
+@inproceedings{nie-etal-2020-adversarial,
+    title = "Adversarial {NLI}: A New Benchmark for Natural Language Understanding",
+    author = "Nie, Yixin  and
+      Williams, Adina  and
+      Dinan, Emily  and
+      Bansal, Mohit  and
+      Weston, Jason  and
+      Kiela, Douwe",
+    booktitle = "Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics",
+    year = "2020",
+    publisher = "Association for Computational Linguistics",
+}
+```
+
+### Subtasks
+
+List or describe tasks defined in this folder, and their names here:
+* `anli_r1`: The data collected adversarially in the first round.
+* `anli_r2`: The data collected adversarially in the second round, after training on the previous round's data.
+* `anli_r3`: The data collected adversarially in the third round, after training on the previous multiple rounds of data.
+
+### Checklist
+
+For adding novel benchmarks/datasets to the library:
+  * [x] Is the task an existing benchmark in the literature?
+  * [x] Have you referenced the original paper that introduced the task?
+  * [ ] If yes, does the original paper provide a reference implementation? If so, have you checked against the reference implementation and documented how to run such a test?
+
+
+If other tasks on this dataset are already supported:
+* [ ] Is the "Main" variant of this task clearly denoted?
+* [x] Have you provided a short sentence in a README on what each new variant adds / evaluates?
+* [ ] Have you noted which, if any, published evaluation setups are matched by this variant?

lm_eval/tasks/anli/anli_r1.yaml

+group:
+  - multiple_choice
+  - natural_language_inference
+  - nli
+  - adverserial
+task: anli_r1
+dataset_path: anli
+dataset_name: null
+output_type: multiple_choice
+training_split: train_r1
+validation_split: dev_r1
+test_split: test_r1
+doc_to_text: "{{premise}}\nQuestion: {{hypothesis}} True, False, or Neither?\nAnswer:"
+# True = entailment
+# False = contradiction
+# Neither = neutral
+doc_to_target: "{{['True', 'Neither', 'False'][label]}}"
+doc_to_choice:
+  - "True"
+  - "Neither"
+  - "False"
+should_decontaminate: true
+doc_to_decontamination_query: premise
+metric_list:
+  - metric: acc
+    aggregation: mean
+    higher_is_better: true
\ No newline at end of file

lm_eval/tasks/anli/anli_r2.yaml

+group:
+  - multiple_choice
+  - natural_language_inference
+  - nli
+  - adverserial
+task: anli_r2
+dataset_path: anli
+dataset_name: null
+output_type: multiple_choice
+training_split: train_r2
+validation_split: dev_r2
+test_split: test_r2
+doc_to_text: "{{premise}}\nQuestion: {{hypothesis}} True, False, or Neither?\nAnswer:"
+# True = entailment
+# False = contradiction
+# Neither = neutral
+doc_to_target: "{{['True', 'Neither', 'False'][label]}}"
+doc_to_choice:
+  - "True"
+  - "Neither"
+  - "False"
+should_decontaminate: true
+doc_to_decontamination_query: premise
+metric_list:
+  - metric: acc
+    aggregation: mean
+    higher_is_better: true
\ No newline at end of file

lm_eval/tasks/anli/anli_r3.yaml

+group:
+  - multiple_choice
+  - natural_language_inference
+  - nli
+  - adverserial
+task: anli_r3
+dataset_path: anli
+dataset_name: null
+output_type: multiple_choice
+training_split: train_r3
+validation_split: dev_r3
+test_split: test_r3
+doc_to_text: "{{premise}}\nQuestion: {{hypothesis}} True, False, or Neither?\nAnswer:"
+# True = entailment
+# False = contradiction
+# Neither = neutral
+doc_to_target: "{{['True', 'Neither', 'False'][label]}}"
+doc_to_choice:
+  - "True"
+  - "Neither"
+  - "False"
+should_decontaminate: true
+doc_to_decontamination_query: premise
+metric_list:
+  - metric: acc
+    aggregation: mean
+    higher_is_better: true
\ No newline at end of file