SIGNALAI·Jun 17, 2026, 4:00 AMSignal55Medium term

Tight $L_\infty$ Sample Complexity for Low-Degree and Sparse Boolean Polynomials

Source: arXiv cs.LG

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Tight $L_\infty$ Sample Complexity for Low-Degree and Sparse Boolean Polynomials

arXiv:2606.17319v1 Announce Type: cross Abstract: Motivated by the optimization of bounded binary black-box functions, we study the problem of learning polynomial surrogates over the Boolean hypercube. To ensure that optimizing the surrogate yields good solutions for the underlying objective, we require uniform $L_\infty$-error guarantees rather than the usual $L_2$-type guarantees. We characterize the minimax sample complexity of uniform estimation under subgaussian noise for two classes of bounded polynomials. First, for polynomials of degree at most $d$ on $n$ variables, the sample complexi

Why this matters
Why now

This research provides theoretical bounds for efficiently learning complex Boolean functions, a foundational problem at the core of machine learning and optimization, particularly relevant as AI systems become more sophisticated.

Why it’s important

Improved techniques for learning and optimizing black-box functions directly impact the efficiency, robustness, and performance of AI agents and complex algorithmic systems, potentially accelerating AI development.

What changes

The research offers a pathway to more sample-efficient and uniform error guarantees for learning polynomial surrogates, which can lead to more predictable and reliable AI system behavior, especially in optimization contexts.

Winners
  • · AI/ML researchers
  • · Optimization software developers
  • · Companies developing AI agents
Losers
  • · Inefficient black-box optimization methods
  • · Trial-and-error AI development paradigms
Second-order effects
Direct

More robust and efficient training of machine learning models for complex optimization tasks.

Second

Accelerated development and deployment of autonomous AI agents capable of navigating high-dimensional decision spaces.

Third

New classes of AI applications become feasible due to enhanced optimization capabilities with strong theoretical guarantees.

Editorial confidence: 85 / 100 · Structural impact: 40 / 100
Original report

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