ALOHA: developing an interactive graph-based visualization for dietary supplement knowledge graph through user-centered design

BMC Medical Informatics and Decision Making
Xing HeJiang Bian

Abstract

Dietary supplements (DSs) are widely used. However, consumers know little about the safety and efficacy of DSs. There is a growing interest in accessing health information online; however, health information, especially online information on DSs, is scattered with varying levels of quality. In our previous work, we prototyped a web application, ALOHA, with interactive graph-based visualization to facilitate consumers' browsing of the integrated DIetary Supplement Knowledge base (iDISK) curated from scientific resources, following an iterative user-centered design (UCD) process. Following UCD principles, we carried out two design iterations to enrich the functionalities of ALOHA and enhance its usability. For each iteration, we conducted a usability assessment and design session with a focus group of 8-10 participants and evaluated the usability with a modified System Usability Scale (SUS). Through thematic analysis, we summarized the identified usability issues and conducted a heuristic evaluation to map them to the Gerhardt-Powals' cognitive engineering principles. We derived suggested improvements from each of the usability assessment session and enhanced ALOHA accordingly in the next design iteration. The SUS score in the se...Continue Reading

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Citations

Aug 9, 2019·BMC Medical Informatics and Decision Making·Zhe HeRui Zhang
Dec 16, 2020·BMC Medical Informatics and Decision Making·Anderson RossanezHélène de Ribaupierre
Apr 8, 2021·Journal of Cancer Research and Clinical Oncology·Maja TankKristina Norman
May 7, 2021·Annual Review of Biomedical Data Science·Tiffany J CallahanLawrence E Hunter

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Software Mentioned

Neo4j Python driver
GraphDB
Neo4j Cypher
ALOHA
Python
Sleepaid
Sigma
HelpHero
WebMD
Flask

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