Insight into the strengths, weaknesses, opportunities, and threats (SWOT) of planning\ud support systems (PSS) is fragmented between users and system developers. The lack of combined\ud insights blocks development in the right direction and makes potential users hesitant to apply PSS in\ud planning. This study presents SWOT of PSS from a combined user ^ developer perspective. We first\ud express them in terms of combinations of planning task, PSS information function, and user, and\ud subsequently use a literature survey, a series of interviews, and a web survey to gather views from\ud developers, users, and PSS experts. The analysis shows that planners mainly use simple information\ud storage and retrieval systems for exploration tasks, while the majority of PSS are technically much\ud more advanced and aim to support complex tasks. The potential of these advanced PSS can only be\ud realized if planners and system developers start to share knowledge and demands and identify\ud opportunities in a cooperative PSS-development process. Without such a process, the advantages\ud and opportunities of PSS will remain unexploited
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