Datasets › Assembly101
Assembly101
Assembly101 is a new procedural activity dataset featuring 4321 videos of people assembling and disassembling 101 "take-apart" toy vehicles. Participants work without fixed instructions, and the sequences feature rich and natural variations in action ordering, mistakes, and corrections. Assembly101 is the first multi-view action dataset, with simultaneous static (8) and egocentric (4) recordings. Sequences are annotated with more than 100K coarse and 1M fine-grained action segments, and 18M 3D hand poses. We benchmark on three action understanding tasks: recognition, anticipation and temporal segmentation. Additionally, we propose a novel task of detecting mistakes. The unique recording format and rich set of annotations allow us to investigate generalization to new toys, cross-view transfer, long-tailed distributions, and pose vs. appearance. We envision that Assembly101 will serve as a new challenge to investigate various activity understanding problems.
Image Source: https://assembly-101.github.io/
Benchmarks archive 2025-07-28
All 4 leaderboards whose dataset resolves to this page shown (sort by any header). "First row" is the archive's own first row at snapshot, in the archive's row order; nothing here re-ranks and metric direction is not asserted.
| First row (archive order) | Paper | Code | ||||
|---|---|---|---|---|---|---|
| 3D Action Recognition | Assembly101 | HandFormer-B/21 Actions Top-1 41.06 | On the Utility of 3D Hand Poses for Action Recognition | s-shamil/HandFormer | 7 | Compare |
| Action Segmentation | Assembly101 | ASQuery F1@10% 37.8 | ASQuery: A Query-based Model for Action Segmentation | zlngan/ASQuery | 7 | Compare |
| Action Anticipation | Assembly101 | Goal Consistency Verbs Recall@5 60.04 | Action Anticipation with Goal Consistency | olga-zats/goal_consistency | 2 | Compare |
| Open Vocabulary Action Recognition | Assembly101 | OAP+AOP HM 6.6 | Opening the Vocabulary of Egocentric Actions | dibschat/openvocab-egoAR | 1 | Compare |
Papers archive 2025-07-28
17 shown of 17 papers with a leaderboard row on this dataset's benchmarks, newest first. The archive's own "papers using this dataset" list was never published, so this is the benchmark-backed subset; the archive's count for this dataset is 57. The Syntology column is from Syntology's graph (read 2026-09-24), stated per sample; it is not part of any archive number.
Dataset loaders archive 2025-07-28
1 loader as listed in the archive; links are outbound and not re-checked here.
Tasks archive 2025-07-28
License archive 2025-07-28
No licence recorded in the archive. Absence here is not a statement about the dataset's terms.
Modalities archive 2025-07-28
Languages archive 2025-07-28
Variants archive 2025-07-28
- Assembly101
1 variant name, as the archive lists them.
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