SIGNALAI·May 25, 2026, 4:00 AMSignal55Medium term

Order-Optimal Sequential 1-Bit Mean Estimation in General Tail Regimes

Source: arXiv cs.LG

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Order-Optimal Sequential 1-Bit Mean Estimation in General Tail Regimes

arXiv:2604.07796v2 Announce Type: replace-cross Abstract: In this paper, we study the problem of mean estimation under 1-bit communication constraints. We propose a novel adaptive mean estimator based solely on randomized threshold queries, where each 1-bit outcome indicates whether a given sample exceeds a sequentially chosen threshold. Our estimator is $(\epsilon, \delta)$-PAC for any distribution with a bounded mean $\mu \in [-\lambda, \lambda]$ and a bounded $k$-th central moment $\mathbb{E}[|X-\mu|^k] \le \sigma^k$ for any fixed $k > 1$. Moreover, our sample complexity is order-optimal in

Why this matters
Why now

The continuous growth of data and demand for efficient processing across various domains drives the need for optimized estimation techniques under resource constraints.

Why it’s important

This research provides a more efficient and robust method for mean estimation with minimal communication, which is crucial for distributed AI systems, IoT, and edge computing.

What changes

The proposed order-optimal and $(\epsilon, \delta)$-PAC estimator allows for more accurate and resource-efficient data aggregation and model training in constrained environments.

Winners
  • · Edge computing providers
  • · IoT device manufacturers
  • · Machine learning researchers
  • · Distributed AI platforms
Losers
  • · Inefficient communication protocols
  • · Systems requiring high-bandwidth data transfer
Second-order effects
Direct

More accurate and faster training of machine learning models in resource-limited settings.

Second

Reduced energy consumption and increased scalability for large-scale distributed AI deployments.

Third

Accelerated development of autonomous AI agents operating with minimal communication overhead.

Editorial confidence: 90 / 100 · Structural impact: 40 / 100
Original report

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Read at arXiv cs.LG
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