An invited paper in a research area typically refers to a paper authored by an expert in a particular field who has been invited to contribute their insights and knowledge on a specific topic. These papers are often seen as authoritative and influential within the field, as the authors are recognized for their expertise and research contributions. Invited papers typically provide a comprehensive overview of the current state of research in a specific area, highlight key developments and trends, and offer new insights or perspectives on the topic. They may also provide recommendations for future research directions or highlight important gaps in the existing literature. Overall, invited papers in research areas serve to advance knowledge and understanding in a particular field, and help to shape the direction of future research efforts.