The resurrection of digital triplet: A cognitive pillar of human-machine integration at the dawn of industry 5.0

The integration of AI technology with digital transformation has profoundly shaped the evolution towards digital triplet architecture, grounded in human-centric methodologies. By infusing human intellectual activities into both physical and cyberspace, innovative links between humans and machines are established. Despite limitations in transitioning from tangible human presence to the digital realm in cyberspace, extensive efforts are underway to harness emotional, visual, and oral responses, thereby enhancing the reasoning and predictive capabilities of digital twins. These advancements aim to elevate real-time human interactions with physical and virtual systems by integrating intelligent AI algorithms and cognitive computing systems into digital twins. This paper meticulously analyses recent trends in digital twins, tracing their evolution from traditional concepts and applications to a nuanced digital triplet hierarchy that incorporates human intuition, knowledge, and creativity within cyberspace. we delve into the hierarchical framework of the digital triplet, resonating with maturity, domination, and volition levels, enhances cognitive and perceptual capabilities in cyberspace. The study provides a systematic overview of the development of ultra-realistic digital models, incorporating real-time data-driven artefacts that integrate intelligent activities with multidomain, multiphysics, and multiscale simulations. The research scope is focused on augmenting the perceptive and heuristic capabilities of the digital triplet framework by utilizing AI in data analytics, retrieving heterogeneous data from virtual entities using semantic artificial intelligence technologies, and amalgamating AI and machine learning with human insight and perceptual knowledge. The proposed digital triplet hierarchy aims to enhance cyberspace's capacity for learning, cognitive skills, and knowledge transfer. It can be a guideline for the researcher to promote cognitive augmentation of the human brain through brain-machine/computer interface, virtual, augmented, and extended reality, fostering a symbiotic relationship between humans and machines in the industrial metaverse and industry 5.0. The paper discusses future directions for research and the challenges involved in developing intelligent digital twins towards the digital triplet paradigm, aiming to embody intelligent activities and cognitive capabilities within the framework of human–machine symbiosis