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Fysiverse-UniWAM: Unified World Action Model for Robotics

Phoenix New Media China
Overview
Fysics AI and CITLab have developed Fysiverse-UniWAM, a model that integrates autonomous navigation, mobile manipulation, and dexterous operation without relying on large-scale robot pre-training. In 24 real-world tests, it achieved top rankings in navigation and mobile manipulation, with mobile manipulation success rates reaching 80.0%.
In Depth

Key Findings

Fysiverse-UniWAM demonstrated superior performance across 24 real-world tasks using four robot platforms. In 13 MAP navigation tests, the model ranked first in all position error metrics and in 11 orientation error metrics. For mobile manipulation, UniWAM-Scaled achieved a first-place average success rate of 80.0%, surpassing π₀.₅ by 17.5 percentage points. In seven fixed-station evaluations, it achieved a 68.9% success rate, trailing π₀.₅ by only 2.5 percentage points. In the MAP-Bench benchmark, the model recorded an average position error of 9.85 cm and an average orientation error of 2.30°, reducing errors by 30.1% and 44.0% respectively compared to the strongest external baseline.

Technical Details

The model utilizes a “Mixed-Stream” architecture that shares a unified video DiT and action DiT backbone via a Mixture-of-Transformers (MoT) mechanism. It separates data into two streams: a navigation stream for environment observation and chassis action, and an operation stream for multi-view observation and arm action. To improve precision, the team introduced Manipulation Anchor Pose (MAP) and the MAP-Data dataset, which contains over 1.5 million trajectories totaling approximately 7,500 hours. MAP generates reference docking poses and approach trajectories using HM3D, InteriorGS, and private scene data combined with vision-language models and automatic path planning.

Background and Context

Unlike traditional semantic navigation that only requires reaching a target vicinity, the MAP approach ensures the chassis stops at a specific position and orientation necessary for manipulation. The model’s capabilities were demonstrated through complex tasks, including interactive grasping, following human hands to deliver objects, three-layer cup stacking with dual arms, high-precision test tube insertion, and long-sequence coffee preparation.

Significance and Outlook

The team demonstrated that UniWAM-Sim, trained solely on MAP-Data without real robot demonstration data, could be deployed directly to two real platforms with a position error of 18.7 cm and orientation error of 6.34°. This suggests that while large-scale robot pre-training remains important, it is not the only prerequisite for building unified robotic capabilities.

Source: https://original.ifeng.com/c/8xhHJZYQw7o

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