Graph-Based Digital Decision Support Systems: Introducing BTwin, a Toolkit for Building Performance Management

Abstract: The digitization of the AECO industry is increasing the need for digital decision-support systems (DDSS) in building management. Despite technological progress, developing such systems still demands significant resources. In particular, integrating diverse building data remains a challenge. Addressing this, the paper introduces BTwin, a toolkit designed to simplify the prototype development of DDSSs supporting decision-making in performance-based building management. This software library facilitates linking data from multiple sources into graph networks, like building information models and time series databases, providing a low-code and open-source framework for creating user-friendly web applications using connector logic.