Sarthak Jain

- Add exclude parameter to Backend._experimental_pull_from_s3 to skip specified dirs - Supported exclude values: checkpoints, logs, trajectories - Update API to accept exclude list and forward it to backend method...

feat(eval): add support for grouped reward summaries and reports

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- Add command-line options to group rewards by task or custom keys - Implement grouped summary computation for evaluation results - Log grouped reward and metric statistics during evaluation -...

- Add concatenate_safe argument to make_dataset to standardize column types for safe concatenation - Serialize info dictionaries as JSON strings to ensure compatible column types - Always standardize key columns...