Unverified50% confidenceFactExact time
Marvo's Margin Reward is defined as the difference in the Solver's performance between using tools and not using tools.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
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Related Claims
UnverifiedMarvo is a visual Agent training method that self-evolves from unlabeled images, enabling the Agent to learn to effectively invoke tools without any human supervision.63% similarUnverifiedMarvo's improvement does not come from more annotated data or a larger model, but from the design of the training signal.63% similarUnverifiedMarvo's design reduces the risks of mode collapse or uncontrolled difficulty that easily arise in self-play, making training more stable and controllable.62% similarUnverifiedReward shaping refers to designing additional auxiliary reward terms beyond the sparse original reward to guide the policy, which can accelerate convergence, but if the auxiliary rewards are inconsistent with the final objective, the policy may game the score without truly improving the win rate; in practice a smaller weight is often multiplied in and decayed in the later stages of training.59% similarUnverifiedWhen the margin reward is positive, it indicates that the tool indeed brings gains and the question is a valuable training sample; when the difference is zero or negative, the question's training value is limited.56% similar
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