Integrating Activity Predictions in Knowledge Graphs

Abstract: We argue that ontology-structured knowledge graphs can play a crucial role in generating predictions about future events. By leveraging the semantic framework provided by Basic Formal Ontology (BFO) and Common Core Ontologies (CCO), we demonstrate how data such as the movements of a fishing vessel can be organized in and retrieved from a knowledge graph. These query results are then used to create Markov chain models, allowing us to predict future states based on the vessel's history. To fully support this process, we introduce the term `spatiotemporal instant' to complete the necessary structural semantics. Additionally, we critique the prevailing ontological model of probability, which conflates probability with likelihood and relies on the problematic concept of modal measurements: measurements of future entities. We propose an alternative view, where probabilities are treated as being about process profiles, which better captures the dynamics of real world phenomena. Finally, we demonstrate how our Markov chain based probability calculations can be seamlessly integrated back into the knowledge graph, enabling further analysis and decision-making. Keywords: predictive analytics, ontology, Markov chains, probability, Basic Formal Ontology (BFO), knowledge graphs, SPARQL.