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Smart city article details
| Title | A Derived Information Framework For A Dynamic Knowledge Graph And Its Application To Smart Cities |
|---|---|
| ID_Doc | 1425 |
| Authors | Bai J.; Lee K.F.; Hofmeister M.; Mosbach S.; Akroyd J.; Kraft M. |
| Year | 2024 |
| Published | Future Generation Computer Systems, 152 |
| DOI | http://dx.doi.org/10.1016/j.future.2023.10.008 |
| Abstract | In this work, we develop a derived information framework to semantically annotate how a piece of information can be obtained from others in a dynamic knowledge graph. We encode this using the notion of a "derivation"and capture its metadata with a lightweight ontology. We provide an agent template designed to monitor derivations and to standardise agents performing this and related operations. We implement both synchronous and asynchronous communication modes for agents interacting with the knowledge graph. When occurring in conjunction, directed acyclic graphs of derivations can arise, with changing data propagating through the knowledge graph by means of agents' actions. While the framework itself is domain-agnostic, we apply it in the context of smart cities as part of the World Avatar project and demonstrate that it is capable of handling sequential events across different timescales. Starting from source information, the framework automatically populates derived data and ensures they remain up to date upon access for a potential flood impact assessment use case. |
| Author Keywords | Data provenance; Derived information; Directed acyclic graph; Dynamic knowledge graph; Smart cities |
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