feat: add ID-based few-shot example selection (#634)#1263
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Add few_shots_id_column and few_shots_id_list to LightevalTaskConfig, allowing users to specify exact dataset rows as few-shot examples by their unique identifiers. This mirrors the id_sampler functionality in lm-evaluation-harness. When configured, the FewShotSampler filters the few-shot pool to only include docs matching the given IDs, preserving the order specified in few_shots_id_list. Existing behavior is unaffected (both fields default to None).
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Add few_shots_id_column and few_shots_id_list to LightevalTaskConfig, allowing users to specify exact dataset rows as few-shot examples by their unique identifiers. This mirrors the id_sampler functionality in lm-evaluation-harness.
When configured, the FewShotSampler filters the few-shot pool to only include docs matching the given IDs, preserving the order specified in few_shots_id_list. Existing behavior is unaffected (both fields default to None).