PHASES KG (Promoting Healthy Aging through Semantic Enrichment) is a knowledge graph for the HealthyPhases project, which studies how solitude relates to healthy aging and gerotranscendence. It provides a semantically structured framework for integrating concepts from gerontology, psychology, behavior-change research, and ontology engineering, helping researchers reduce terminological ambiguity and improve interoperability across solitude and aging datasets. The attached entity inventory shows a compact ontology-oriented graph with 200 entities, including 93 classes and 107 predicates. Its classes draw on established semantic resources such as the Behaviour Change Intervention Ontology and Basic Formal Ontology, covering behavior change interventions, social alienation, psychological need, human behavior, processes, dispositions, mental functioning, health conditions, and measurement-related concepts. Its predicates include provenance, annotation, RDF/OWL/RDFS, SKOS, VOID, and domain-specific relationship terms for describing graph structure, metadata, synonyms, subclasses, restrictions, and dataset statistics. Together, PHASES KG supports FAIR, reusable, machine-actionable knowledge about solitude, wellbeing, and aging research.
