PL-Stitch

A Stitch in Time: Learning Procedural Workflow via Self-Supervised Plackett-Luce Ranking

Chengan Che, Chao Wang, Xinyue Chen, Sophia Tsoka, Luis C. Garcia-Peraza-Herrera

CVPR 2026

PL-Stitch learns procedure-aware video representations by formulating temporal ordering as a probabilistic listwise ranking problem. It combines global temporal ranking with a spatio-temporal jigsaw objective to capture both procedural progression and fine-grained temporal correspondence.

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