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Streaming Hierarchical Inference with Tabular Foundation Models

Sep 2026 · 1 citation · 26 references
Computer Science

TL;DR

A hierarchical inference framework that combines edge-based retrieval with cloud-based TFM inference, allowing confident samples to be processed locally while uncertain instances are selectively offloaded to a cloud-hosted TFM.

Abstract

Tabular Foundation Models (TFMs) have recently demonstrated strong predictive performance through in-context learning, but their deployment in high-throughput data streams remains challenging due to communication overhead and latency. We propose \textit{HINT}, a hierarchical inference framework that combines edge-based retrieval with cloud-based TFM inference. A graph-based approximate nearest neighbor memory maintained over a sliding window provides local predictions and uncertainty estimates, allowing confident samples to be processed locally while uncertain instances are selectively offloaded, together with their retrieved context, to a cloud-hosted TFM. The framework exposes an offloading threshold and a neighborhood retrieval policy that can be varied to balance predictive performance and communication cost. Experiments show \textit{HINT} consistently identifies favorable trade-offs.

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