Cooperative Systems Engineering (COSE) is an area of research that focuses on developing methods, models, and tools for designing complex systems that involve multiple stakeholders and interdependent components. The overarching goal of COSE is to improve the effectiveness and efficiency of collaborative engineering efforts by incorporating principles of teamwork, communication, and coordination into the design process. COSE encompasses a variety of sub-disciplines, including collaborative modeling, requirements engineering, system architecture, and integration, among others. Overall, COSE seeks to address the challenges of designing systems in environments where multiple actors with diverse expertise, goals, and constraints must work together to achieve a common objective.