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The “PEg TRAnsfer Workflow recognition by different modalities” (PETRAW) sub-challenge provides a unique dataset for online automatic recognition of surgical workflow of a peg transfer training session. The objective of peg transfer session is to transfer 6 blocks from the left to the right and back. Each block must be extracted from a peg with one hand, transferred to the other hand, and inserted in a peg at the other side of the board. The dataset contains video, kinematic, and segmentation data for at least 100 sequences.