Spatio-Temporal Jump Model for Urban Thermal Comfort Monitoring

TL;DR

This paper introduces a spatio-temporal jump model for urban thermal comfort monitoring that captures dynamic spatial and temporal patterns, improving interpretability and handling missing data effectively.

Contribution

It presents a novel spatio-temporal clustering framework that accounts for persistence and dynamics in urban thermal comfort data, validated through simulations and real-world Singapore data.

Findings

Accurately recovers true data partitions in simulations

Identifies meaningful thermal comfort regimes in urban data

Demonstrates potential for unsupervised thermal comfort monitoring

Abstract

Thermal comfort is essential for well-being in urban spaces, especially as cities face increasing heat from urbanization and climate change. Existing thermal comfort models usually overlook temporal dynamics alongside spatial dependencies. We address this problem by introducing a spatio-temporal jump model that clusters data with persistence across both spatial and temporal dimensions. This framework enhances interpretability, minimizes abrupt state changes, and easily handles missing data. We validate our approach through extensive simulations, demonstrating its accuracy in recovering the true underlying partition. When applied to hourly environmental data gathered from a set of weather stations located across the city of Singapore, our proposal identifies meaningful thermal comfort regimes, demonstrating its effectiveness in dynamic urban settings and suitability for real-world monitoring. The comparison of these regimes with feedback on thermal preference indicates the potential of an unsupervised approach to avoid extensive surveys.