Managing supplier delivery reliability risk under limited information: Foundations for a human-in-the-loop DSS

► We address the supply delay risk mitigation process. ► The decision maker deals with limited information about suppliers' performance. ► A distribution-free mathematical model addressing risk mitigation is presented. ► The mathematical model is framed into a human-in-the-loop DSS. ► The HIL-DSS complements numerical data with human expertise. ► Results provided show robustness against different scenarios of delay distribution.