A Derived Information Framework for a Dynamic Knowledge Graph and its Application to Smart Cities DOI
Jiaru Bai, Kok Foong Lee, Markus Hofmeister

et al.

Published: Jan. 1, 2023

In this work, we develop a derived information framework to semantically annotate how piece of can be obtained from others in dynamic knowledge graph. We encode using the notion “derivation” and capture its metadata with lightweight ontology. provide an agent template designed monitor derivations standardise agents performing related operations. implement both synchronous asynchronous communication modes for interacting When occurring conjunction, directed acyclic graphs arise, changing data propagating through graph by means agents’ actions. While itself is domain-agnostic, apply it context smart cities as part World Avatar project demonstrate that capable handling sequential events across different timescales. Starting source information, automatically populates ensures they remain up date upon access potential flood impact assessment use case.

Language: Английский

Cross-domain flood risk assessment for smart cities using dynamic knowledge graphs DOI Creative Commons
Markus Hofmeister, George Brownbridge,

Michael Hillman

et al.

Sustainable Cities and Society, Journal Year: 2023, Volume and Issue: 101, P. 105113 - 105113

Published: Dec. 16, 2023

This paper investigates the usage of knowledge graphs to bridge gap between current data silos in deriving a holistic perspective on impact flooding. It builds idea connected digital twins based World Avatar dynamic graph deploy an ecosystem autonomous software agents continuously ingest new real-world information and operate it. Multiple publicly available yet isolated sources, including geospatial building property sales as well real-time river levels, weather observations, flood warnings, are instantiate semantically rich knowledge, data, computational capabilities provide cross-domain insights projected flooding events their potential population built infrastructure. The extensibility proposed approach is highlighted by further integrating power, water, telecoms infrastructure part very same system, order analyse flood-induced asset failures propagation across networks. promotes evidence-based decision making during several disaster management phases, supporting both tactical strategic risk assessments, which supports United Nations Sustainable Development Goal 11 improve assessment vulnerability, exposure, communities imposed events.

Language: Английский

Citations

26

A derived information framework for a dynamic knowledge graph and its application to smart cities DOI Creative Commons
Jiaru Bai, Kok Foong Lee, Markus Hofmeister

et al.

Future Generation Computer Systems, Journal Year: 2023, Volume and Issue: 152, P. 112 - 126

Published: Oct. 29, 2023

In this work, we develop a derived information framework to semantically annotate how piece of can be obtained from others in dynamic knowledge graph. We encode using the notion "derivation" and capture its metadata with lightweight ontology. provide an agent template designed monitor derivations standardise agents performing related operations. implement both synchronous asynchronous communication modes for interacting When occurring conjunction, directed acyclic graphs arise, changing data propagating through graph by means agents' actions. While itself is domain-agnostic, apply it context smart cities as part World Avatar project demonstrate that capable handling sequential events across different timescales. Starting source information, automatically populates ensures they remain up date upon access potential flood impact assessment use case.

Language: Английский

Citations

17

Comprehensive digital twin for infrastructure: A novel ontology and graph-based modelling paradigm DOI
Tao Li,

Yi Rui,

Hehua Zhu

et al.

Advanced Engineering Informatics, Journal Year: 2024, Volume and Issue: 62, P. 102747 - 102747

Published: July 30, 2024

Language: Английский

Citations

7

Dynamic control of district heating networks with integrated emission modelling: A dynamic knowledge graph approach DOI Creative Commons
Markus Hofmeister, Kok Foong Lee,

Yi-Kai Tsai

et al.

Energy and AI, Journal Year: 2024, Volume and Issue: 17, P. 100376 - 100376

Published: May 18, 2024

This paper presents a knowledge graph-based approach for the dynamic control of district heating network with integrated emission dispersion modelling. We propose an interoperable and extensible implementation to forecast anticipated heat demand municipal network, minimise associated total generation cost based on previously devised methodology, couple it simulations induced airborne pollutants provide automatic insights into air quality implications various sourcing strategies. create cross-domain interoperability in nexus energy via newly developed ontologies semantic software agents, which can be chained together The World Avatar graph resemble behaviour complex systems. Furthermore, we integrate City Energy Analyst this ecosystem building-level renewable potential foster strategic analyses scenario planning. Underlying calculations use building weather data from place inherent assumptions official release, facilitating more data-driven approach. All cases are implemented mid-size town Germany as proof-of-concept, unified visualisation interface is provided, allowing examination 3D buildings alongside their corresponding supply time series, well data. With work, outline Semantic Web technologies connect digital twins holistic modelling smart cities, thereby addressing increasing complexity interconnected

Language: Английский

Citations

5

Fostering urban resilience and accessibility in cities: A dynamic knowledge graph approach DOI Creative Commons
Shin Zert Phua, Markus Hofmeister,

Yi-Kai Tsai

et al.

Sustainable Cities and Society, Journal Year: 2024, Volume and Issue: 113, P. 105708 - 105708

Published: July 31, 2024

Language: Английский

Citations

4

Urban flooding digital twin system framework DOI Creative Commons
Chenyu Ge, Shengfeng Qin

Systems Science & Control Engineering, Journal Year: 2025, Volume and Issue: 13(1)

Published: Feb. 7, 2025

Digital twin-based resilience management systems are essential for improving urban flooding resilience, enabling lifecycle-oriented emergency as a continuous process rather than discrete phases. However, to the best of our knowledge, currently, there lacks system framework supporting development an digital twin (UFDT) platform capable managing events across entire lifecycle. This UFDT is required (1) accommodate model-generation methods/tools preparing what-if scenarios, (2) support readiness simulations and evaluations, (3) coordinate various collaborative prevention intervention services from different stakeholders in response any emergence, (4) monitor forecast risks recovery phase. To fill this gap, paper, new developed based on user-centred product design with consideration above requirements. It has two key components: conceptual model, generative methodology its rapid construction/updating/adaptation varying levels detail. A prototype been testing model at city, regional street exemplar assess framework's ability potential provide scalable, adaptable, stakeholder-focused solutions management[Q1].

Language: Английский

Citations

0

Municipal heat planning within The World Avatar DOI Creative Commons

Yi-Kai Tsai,

Markus Hofmeister,

Srishti Ganguly

et al.

Energy and AI, Journal Year: 2025, Volume and Issue: unknown, P. 100479 - 100479

Published: Feb. 1, 2025

Language: Английский

Citations

0

Urban Vulnerability Assessment of Sea Level Rise in Singapore through the World Avatar DOI Creative Commons
Shin Zert Phua, Kok Foong Lee,

Yi-Kai Tsai

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(17), P. 7815 - 7815

Published: Sept. 3, 2024

This paper explores the application of The World Avatar (TWA) dynamic knowledge graph to connect isolated data and assess impact rising sea levels in Singapore. Current level rise vulnerability assessment tools are often regional, narrow scope (e.g., economic or cultural aspects only), inadequate representing complex non-geospatial consistently. We apply TWA conduct a multi-perspective Singapore, evaluating vulnerable buildings, road networks, land plots, sites, populations. introduce OntoSeaLevel, an ontology describe scenarios, its on broader elements defined other ontologies such as buildings (OntoBuiltEnv ontology), networks (OpenStreetMap plots (Ontoplot Ontozoning ontology). deploy computational agents synthesise from government, industry, publicly accessible sources, enriching with metadata property usage, estimated construction cost, number floors, gross floor area. An agent is applied identify instantiate impacted sites using OntoSeaLevel. These include populations at risk. showcase these unified visualisation, demonstrating TWA’s potential planning tool against through assessment, resource allocation, integrated spatial planning.

Language: Английский

Citations

0

Fostering Urban Resilience and Accessibility in Cities: A Dynamic Knowledge Graph Approach DOI
Shin Zert Phua, Markus Hofmeister,

Yi-Kai Tsai

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

0

Autonomous Generation of a Public Transportation Network by an Agent-Based Model: Mutual Enrichment with Knowledge Graphs for Sustainable Urban Mobility DOI Open Access
Flann Chambers, Giovanna Di Marzo Serugendo, Christophe Cruz

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(20), P. 8907 - 8907

Published: Oct. 14, 2024

Sound planning for urban mobility is a key facet of securing sustainable future our systems, and requires the careful comprehensive assessment its components, such as status cities’ public transportation network, how planners should invest in developing it. We use agent-based modelling, tried true method endeavours, studying history, planned works possible evolution tram line network Greater Geneva region. couple these models with knowledge graphs, way that both are able to mutually enrich each other. Results show information organisation powers graphs highly relevant effortlessly recounting past events designing scenarios be directly incorporated inside model. The model features all 5 lines from current real-world servicing total 15 communes. In turn, capable replaying events, predicting developments exploring user-defined scenarios. It also harnesses self-organisation properties autonomously reconstruct an artificial region based on two different initial networks, up 29 communes depending scenario. data gathered simulation imported back into graphs. networks closely resemble their counterparts demonstrate predictive prescriptive They constitute valuable assets towards compelling progress modelling field, convincing demonstration technical capabilities.

Language: Английский

Citations

0