A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in Buildings

The temperature of indoor spaces is at the core of highly relevant topics such as comfort, productivity and health. In conditioned spaces, this temperature is determined by thermostat preferences, but there is a lack of understanding of this phenomenon as a time-dependent magnitude. In addition to t...

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Main Authors: Alfonso P. Ramallo-González, Aurora González-Vidal, Fernando Terroso-Saenz, Antonio F. Skarmeta-Gómez
Format: Article
Language:English
Published: MDPI AG 2022-07-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/10/14/2363
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author Alfonso P. Ramallo-González
Aurora González-Vidal
Fernando Terroso-Saenz
Antonio F. Skarmeta-Gómez
author_facet Alfonso P. Ramallo-González
Aurora González-Vidal
Fernando Terroso-Saenz
Antonio F. Skarmeta-Gómez
author_sort Alfonso P. Ramallo-González
collection DOAJ
description The temperature of indoor spaces is at the core of highly relevant topics such as comfort, productivity and health. In conditioned spaces, this temperature is determined by thermostat preferences, but there is a lack of understanding of this phenomenon as a time-dependent magnitude. In addition to this, there is scientific evidence that the mental models of how users understand the operation of the billions of air-conditioning machines around the world are incorrect, which causes systems to ‘compensate’ for temperatures outside by adjusting the thermostat, which leads to erratic changes on set-points over the day. This paper presents the first model of set-point temperature as a time-dependent variable. Additionally, a new mathematical algorithm was developed to complement these models and make possible their identification on the go, called the life Bayesian inference of transition matrices. Data from a total of 75 + 35 real thermostats in two buildings for more than a year were used to validate the model. The method was shown to be highly accurate, fast, and computationally trivial in terms of time and memory, representing a change in the paradigm for smart thermostats.
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spelling doaj.art-14d4941a220d4ee7ada3939ae9be42d82023-11-30T21:23:09ZengMDPI AGMathematics2227-73902022-07-011014236310.3390/math10142363A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in BuildingsAlfonso P. Ramallo-González0Aurora González-Vidal1Fernando Terroso-Saenz2Antonio F. Skarmeta-Gómez3Faculty of Computer Science, Campus de Espinardo, Universidad de Murcia, 30100 Murcia, SpainFaculty of Computer Science, Campus de Espinardo, Universidad de Murcia, 30100 Murcia, SpainFacultad de Informática, Campus de Los Jerónimos, Universidad Católica de San Antonio de Murcia UCAM, Guadalupe, 30107 Murcia, SpainFaculty of Computer Science, Campus de Espinardo, Universidad de Murcia, 30100 Murcia, SpainThe temperature of indoor spaces is at the core of highly relevant topics such as comfort, productivity and health. In conditioned spaces, this temperature is determined by thermostat preferences, but there is a lack of understanding of this phenomenon as a time-dependent magnitude. In addition to this, there is scientific evidence that the mental models of how users understand the operation of the billions of air-conditioning machines around the world are incorrect, which causes systems to ‘compensate’ for temperatures outside by adjusting the thermostat, which leads to erratic changes on set-points over the day. This paper presents the first model of set-point temperature as a time-dependent variable. Additionally, a new mathematical algorithm was developed to complement these models and make possible their identification on the go, called the life Bayesian inference of transition matrices. Data from a total of 75 + 35 real thermostats in two buildings for more than a year were used to validate the model. The method was shown to be highly accurate, fast, and computationally trivial in terms of time and memory, representing a change in the paradigm for smart thermostats.https://www.mdpi.com/2227-7390/10/14/2363thermostatIoTcomfortenvironment
spellingShingle Alfonso P. Ramallo-González
Aurora González-Vidal
Fernando Terroso-Saenz
Antonio F. Skarmeta-Gómez
A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in Buildings
Mathematics
thermostat
IoT
comfort
environment
title A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in Buildings
title_full A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in Buildings
title_fullStr A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in Buildings
title_full_unstemmed A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in Buildings
title_short A Novel Learning Algorithm Based on Bayesian Statistics: Modelling Thermostat Adjustments for Heating and Cooling in Buildings
title_sort novel learning algorithm based on bayesian statistics modelling thermostat adjustments for heating and cooling in buildings
topic thermostat
IoT
comfort
environment
url https://www.mdpi.com/2227-7390/10/14/2363
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