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The Devil is in the Detail: A Framework for Macroscopic Prediction via Microscopic Models
Yingxiang Yang · Negar Kiyavash · Le Song · Niao He

Mon Dec 07 08:10 PM -- 08:20 PM (PST) @ Orals & Spotlights: COVID/Health/Bio Applications

Macroscopic data aggregated from microscopic events are pervasive in machine learning, such as country-level COVID-19 infection statistics based on city-level data. Yet, many existing approaches for predicting macroscopic behavior only use aggregated data, leaving a large amount of fine-grained microscopic information unused. In this paper, we propose a principled optimization framework for macroscopic prediction by fitting microscopic models based on conditional stochastic optimization. The framework leverages both macroscopic and microscopic information, and adapts to individual microscopic models involved in the aggregation. In addition, we propose efficient learning algorithms with convergence guarantees. In our experiments, we show that the proposed learning framework clearly outperforms other plug-in supervised learning approaches in real-world applications, including the prediction of daily infections of COVID-19 and medicare claims.

Author Information

Yingxiang Yang (ByteDance)
Negar Kiyavash (École Polytechnique Fédérale de Lausanne)
Le Song (Georgia Institute of Technology)
Niao He (ETH Zurich)

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