change id_ to idx in instance

lm_eval/api/instance.py

 from dataclasses import dataclass, field
-from typing import Literal
+from typing import Literal, Tuple
 
 @dataclass
 class Instance:
     request_type: str = Literal["loglikelihood", "loglikelihood_rolling", "greedy_until"]
     doc: dict = None
     arguments: tuple = None
-    id_: int = None
-    metadata: tuple = None # TODO: better typehints here
+    idx: int = None
+    metadata: tuple = Tuple[str, int, int] # TODO: better typehints here
     resps: list = field(default_factory=list)
     filtered_resps: dict = field(default_factory=dict)
 

lm_eval/api/samplers.py

 
 
-
-class Sampler: # TODO: make this abstract class?
+class Sampler:
 
     def __init__(self, docs, task, fewshot_indices=None, rnd=None):
 
@@ -17,14 +16,17 @@ class Sampler: # TODO: make this abstract class?
         if fewshot_indices: # subset few-shot docs from 
             self.docs = self.docs.select(fewshot_indices)
 
+
     def get_context(self, doc, num_fewshot):
 
-        # draw an extra fewshot sample if 
+        # draw an extra fewshot sample if using same split as evaluting on
         n_samples = num_fewshot + 1 if self.config.fewshot_split == self.config.test_split else num_fewshot 
 
+        # draw `n_samples` docs from fewshot_docs
         fewshotex = self.sample(n_samples)
 
         # get rid of the doc that's the one we're evaluating, if it's in the fewshot
+        # TODO: should we just stop people from using fewshot from same split as evaluating?
         selected_docs = [x for x in fewshotex if x != doc][:num_fewshot]
         
         labeled_examples = (
@@ -53,7 +55,7 @@ class BalancedSampler(Sampler):
     def sample(self, n):
         """
         TODO: this should return approximately class-balanced samples from our fewshot examples. 
-        TODO: what order should they be in?
+        TODO: what order should they be in? maybe random?
         """
 
         pass

lm_eval/api/task.py

@@ -469,7 +469,7 @@ class ConfigurableTask(Task):
     def construct_requests(self, doc, ctx, **kwargs):
 
         if self.OUTPUT_TYPE == "greedy_until":
-            return Instance(request_type=self.OUTPUT_TYPE, doc=doc, arguments=(ctx, "\n\n"), id_=0, **kwargs)
+            return Instance(request_type=self.OUTPUT_TYPE, doc=doc, arguments=(ctx, "\n\n"), idx=0, **kwargs)
 
     def process_results(self, doc, results):
 
@@ -511,7 +511,7 @@ class MultipleChoiceTask(Task):
                 request_type="loglikelihood",
                 doc=doc, 
                 arguments=(ctx, " {}".format(choice)),
-                id_=i,
+                idx=i,
                 **kwargs,
             )
             for i, choice in enumerate(doc["choices"])]
@@ -589,7 +589,7 @@ class PerplexityTask(Task, abc.ABC):
     def construct_requests(self, doc, ctx, **kwargs):
         assert not ctx
 
-        return Instance(request_type=self.OUTPUT_TYPE, doc=doc, arguments=(self.doc_to_target(doc),), id_=0, **kwargs)
+        return Instance(request_type=self.OUTPUT_TYPE, doc=doc, arguments=(self.doc_to_target(doc),), idx=0, **kwargs)
         # req = rf.loglikelihood_rolling(self.doc_to_target(doc))
         # return req
 

lm_eval/evaluator.py

@@ -181,7 +181,7 @@ def evaluate(
             for doc_id, doc in enumerate(itertools.islice(task.test_docs(), 0, limit) if task.has_test_docs() else task.validation_docs()):
                 # subset instances to only this document id ; sort by idx
                 requests = list(filter(lambda x: x.doc_id == doc_id, task.instances))
-                requests.sort(key=lambda x: x.id_)
+                requests.sort(key=lambda x: x.idx)
                 metrics = task.process_results(doc, [req.filtered_resps[key] for req in requests])
                 for metric, value in metrics.items():
                     vals[(task_name, key, metric)].append(value)

lm_eval/tasks/gsm8k.py

@@ -88,7 +88,7 @@ class GradeSchoolMath8K(Task):
         """
         # NOTE: The paper implements "verifiers" that assign a score to multiple
         # solutions and output the highest ranked solution.
-        return Instance(request_type=self.OUTPUT_TYPE, doc=doc, arguments=(ctx, ["\n"]), id_=0, **kwargs)
+        return Instance(request_type=self.OUTPUT_TYPE, doc=doc, arguments=(ctx, ["\n"]), idx=0, **kwargs)
         # completion = rf.greedy_until(ctx, ["\n"])
         # return completion