# Aging-Friendly Design Research: Knowledge Graph Construction for Elderly Advantage Applications
###### Abstract  
In the field of aging design, obtaining elderly advantage data is a challenge. In this study, we developed a visualization tool using knowledge graph technology to assist designers in studying elderly advantages, promoting their application in design practice. First, brainstorming sessions and workshops were held to analyze the challenges of applying elderly advantages in design. Based on these challenges, the concept and functional design of an elderly advantages knowledge graph were proposed. Next, the elderly advantages knowledge graph was constructed by following these steps: (1) The KJ-AHP method was used to process raw data, making them structured and quantitative. (2) The ontology of the knowledge graph was reverse-engineered based on the functional requirements of the graph, allowing the construction of the knowledge graph model layer. (3) The processed data were applied to the knowledge graph ontology through AHP-ontology mapping rules, allowing the knowledge content construction. (4) The programming language Cypher was used for the functional verification of the elderly advantages knowledge graph, and a satisfaction survey was conducted through questionnaires to assess the verification process. The elderly advantages knowledge graph constructed in this study initially fulfilled the expected functions and was met with high satisfaction. The application of knowledge graph technology provides a new reference for advantage mining in the design field. Based on the innovative combination of KJ-AHP and knowledge graph technology, this study enhances the structuring and quantification of graph data, significantly facilitating designers' understanding of data structures, clarifying data relationships, and expanding design thinking. 21 January 20252 February 20252  
and above) [3]. With improvements in healthcare and education, a significant number of elderly individuals, especially those in the first stage, are maintaining healthier physical and mental states and are more open to new things. Past research into age-friendly design primarily focused on the needs of older adults and the challenges and problems they face, but such analysis no longer fully addresses the contemporary design requirements. Therefore, this study shifts the focus to exploring the unique advantages pertaining to the elderly and their potential applications, particularly in the context of age-friendly design, highlighting the promising development prospects in this field. In China, researchers have primarily focused on the individual cognition of the elderly and the advantages they offer, examining their impact on design activities. [PERSON] [4] used grounded theory and case studies to explore the positive impact of factors such as intuitive cognition, prior knowledge, and familiarity on the usability and ease of use of design objects. The results indicated that the cognitive advantages of the elderly are crucial for the usability and applicability of designs. [PERSON] [5] summarized the advantages offered by the elderly, such as abundant time, experience, and psychological regulation ability, through a case study on social work, offering significant guidance for the design of elderly volunteer cultivation programs. [PERSON] [6] discovered, through team experiments, that the advantages offered by the elderly play a significant role in the early stages of creative idea generation in design, particularly with respect to experience, focus, and tolerance. These studies show that involving the elderly can enhance product usability and enrich design creativity. Abroad, researchers have focused more on social interaction and environmental design, using these approaches to promote the utilization of elderly advantages. [PERSON] et al. [7] proposed that participatory design can challenge researchers' stereotypes of the elderly and further promote the social participation of the elderly population.