ReVeaLD: A user-driven domain-specific interactive search platform for biomedical research

•We develop a visual approach for intuitive query formulation by non-technical users.•53 Linked biomedical data sources are queried in real time for data discovery.•User-defined graphic rules dynamically assemble media-rich interfaces from results.•Domain-specific languages increases the usability of semantic web technologies.•Our knowledge-driven platform can be used for information querying in other domains.