Publications:
2023
Ma, Jun; Bouloukakis, Georgios; Kattepur, Ajay; Yus, Roberto; Conan., Denis
DEMSA: a DT-enabled Middleware for Self-adaptive Smart Spaces Proceedings Article
In: The 1st International Workshop on Middleware for Digital Twin (Midd4DT) – held in conjunction with ACM/IFIP/Usenix Middleware 2023, pp. 1-6, Association for Computing Machinery, 2023, ISBN: 979-8-4007-0461-1.
Abstract | Links | BibTeX | Tags: digital twin, middleware, self-adaptive system
@inproceedings{ma2023demsa,
title = {DEMSA: a DT-enabled Middleware for Self-adaptive Smart Spaces},
author = { Jun Ma and Georgios Bouloukakis and Ajay Kattepur and Roberto Yus and Denis Conan.},
url = {https://hal.science/hal-04514015, PDF},
doi = {10.1145/3631319.3632303},
isbn = {979-8-4007-0461-1},
year = {2023},
date = {2023-12-01},
urldate = {2023-12-01},
booktitle = {The 1st International Workshop on Middleware for Digital Twin (Midd4DT) – held in conjunction with ACM/IFIP/Usenix Middleware 2023},
pages = {1-6},
publisher = {Association for Computing Machinery},
abstract = {Heating, Ventilation, and Air Conditioning (HVAC) systems account for a significant portion of energy consumption within buildings. In order to balance the effect of thermal comfort vis-a-vis energy savings, HVAC control strategies have been proposed. However, the strategies are static and do not take into account dynamic changes of consumers, hence creating sub-optimal outcomes. This paper proposes DEMSA, a Digital Twin (DT)-enabled middleware for the self-adaptation of smart buildings. The DEMSA middleware interconnects and coordinates intelligent data exchange be- tween the building edge server, digital twin and Artificial Intelligence (AI) planning nodes in order to invoke appropriate strategies. Moreover, DEMSA is paired with a self-adaptive mechanism that can detect the anomaly of generated planning and adaptively modify it. This process ensures balancing building energy consumption and thermal comfort requirements, without human intervention. The DEMSA middleware is described over a real smart space scenario.
},
keywords = {digital twin, middleware, self-adaptive system},
pubstate = {published},
tppubtype = {inproceedings}
}
Heating, Ventilation, and Air Conditioning (HVAC) systems account for a significant portion of energy consumption within buildings. In order to balance the effect of thermal comfort vis-a-vis energy savings, HVAC control strategies have been proposed. However, the strategies are static and do not take into account dynamic changes of consumers, hence creating sub-optimal outcomes. This paper proposes DEMSA, a Digital Twin (DT)-enabled middleware for the self-adaptation of smart buildings. The DEMSA middleware interconnects and coordinates intelligent data exchange be- tween the building edge server, digital twin and Artificial Intelligence (AI) planning nodes in order to invoke appropriate strategies. Moreover, DEMSA is paired with a self-adaptive mechanism that can detect the anomaly of generated planning and adaptively modify it. This process ensures balancing building energy consumption and thermal comfort requirements, without human intervention. The DEMSA middleware is described over a real smart space scenario.
Papadakis, Nikolaos; Bouloukakis, Georgios; Magoutis, Kostas
Demo: ComDeX Unveiled Demonstrating the Future of IoT-Enhanced Communities Proceedings Article
In: Proceedings of the 17th ACM International Conference on Distributed and Event-Based Systems, pp. 187–190, Association for Computing Machinery, Neuchatel, Switzerland, 2023, ISBN: 9798400701221.
Abstract | Links | BibTeX | Tags: data exchange, IoT, middleware, smart communities
@inproceedings{10.1145/3583678.3603279,
title = {Demo: ComDeX Unveiled Demonstrating the Future of IoT-Enhanced Communities},
author = {Nikolaos Papadakis and Georgios Bouloukakis and Kostas Magoutis},
url = {https://doi.org/10.1145/3583678.3603279, PDF},
doi = {10.1145/3583678.3603279},
isbn = {9798400701221},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {Proceedings of the 17th ACM International Conference on Distributed and Event-Based Systems},
pages = {187–190},
publisher = {Association for Computing Machinery},
address = {Neuchatel, Switzerland},
series = {DEBS '23},
abstract = {The rapidly expanding field of Internet of Things (IoT) has necessitated the development of effective and efficient systems for handling the vast quantities of data that are generated. However, the inherent diversity and complexity of IoT environments, coupled with the large volume of data, pose significant challenges to achieving interoperability and efficient data exchange. ComDeX [3], is a novel approach designed to meet these challenges. This demo paper presents the prototype of ComDeX, which is designed to facilitate efficient data exchange in smart communities using a federation of message brokers. The prototype harnesses NGSI-LD and MQTT standards along with an advertisement-based mechanism to enable dynamic data exchange. We detail its implementation and key functionalities, demonstrating its applicability through scenarios that mimic real-world smart communities.},
keywords = {data exchange, IoT, middleware, smart communities},
pubstate = {published},
tppubtype = {inproceedings}
}
The rapidly expanding field of Internet of Things (IoT) has necessitated the development of effective and efficient systems for handling the vast quantities of data that are generated. However, the inherent diversity and complexity of IoT environments, coupled with the large volume of data, pose significant challenges to achieving interoperability and efficient data exchange. ComDeX [3], is a novel approach designed to meet these challenges. This demo paper presents the prototype of ComDeX, which is designed to facilitate efficient data exchange in smart communities using a federation of message brokers. The prototype harnesses NGSI-LD and MQTT standards along with an advertisement-based mechanism to enable dynamic data exchange. We detail its implementation and key functionalities, demonstrating its applicability through scenarios that mimic real-world smart communities.
Papadakis, Nikolaos; Bouloukakis, Georgios; Magoutis, Kostas
ComDeX: A Context-Aware Federated Platform for IoT-Enhanced Communities Proceedings Article
In: Proceedings of the 17th ACM International Conference on Distributed and Event-Based Systems, pp. 37–48, Association for Computing Machinery, Neuchatel, Switzerland, 2023, ISBN: 9798400701221.
Abstract | Links | BibTeX | Tags: federation, IoT, middleware, pub/sub, smart communities
@inproceedings{10.1145/3583678.3596890,
title = {ComDeX: A Context-Aware Federated Platform for IoT-Enhanced Communities},
author = {Nikolaos Papadakis and Georgios Bouloukakis and Kostas Magoutis},
url = {https://doi.org/10.1145/3583678.3596890, PDF},
doi = {10.1145/3583678.3596890},
isbn = {9798400701221},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {Proceedings of the 17th ACM International Conference on Distributed and Event-Based Systems},
pages = {37–48},
publisher = {Association for Computing Machinery},
address = {Neuchatel, Switzerland},
series = {DEBS '23},
abstract = {This paper presents ComDeX, a context-aware federated architecture and IoT platform for enabling data exchange between IoT-enhanced communities. Today, such smart communities are highly heterogeneous and siloed as they can offer IoT applications and services only to their local community inhabitants. ComDeX uses property graphs to represent smart community entities and automatically maps them to context-aware publish/subscribe messages. Such messages can be discovered and exchanged between communities via a hierarchical federated topology and an advertisement-based mechanism. The ComDeX prototype is implemented using well-known IoT technologies such as MQTT and NGSI-LD. ComDeX is evaluated using a realistic smart port scenario and compared against different federation topologies. The experimental results demonstrate that our approach outperforms existing NGSI-LD solutions in realistic IoT scenarios with synthetically generated workloads, with low impact in larger deployments where the number of hops between brokers of the federation increases.},
keywords = {federation, IoT, middleware, pub/sub, smart communities},
pubstate = {published},
tppubtype = {inproceedings}
}
This paper presents ComDeX, a context-aware federated architecture and IoT platform for enabling data exchange between IoT-enhanced communities. Today, such smart communities are highly heterogeneous and siloed as they can offer IoT applications and services only to their local community inhabitants. ComDeX uses property graphs to represent smart community entities and automatically maps them to context-aware publish/subscribe messages. Such messages can be discovered and exchanged between communities via a hierarchical federated topology and an advertisement-based mechanism. The ComDeX prototype is implemented using well-known IoT technologies such as MQTT and NGSI-LD. ComDeX is evaluated using a realistic smart port scenario and compared against different federation topologies. The experimental results demonstrate that our approach outperforms existing NGSI-LD solutions in realistic IoT scenarios with synthetically generated workloads, with low impact in larger deployments where the number of hops between brokers of the federation increases.