Abstract
Improving construction workers' safety is one of the most critical issues in the construction industry. Methods have been developed to better identify construction hazards on a jobsite by analyzing workers' physical and physiological responses collected from the wearable devices. Among them, electroencephalogram (EEG) holds unique potential since it shows immediate abnormal responses when a hazard is perceived. However, there remain limitations in the current knowledge base to attain the ultimate goal of ubiquitous hazard identification. In this context, this study investigates the feasibility of identifying construction hazards by developing an EEG classifier based on the experiments conducted in an immersive virtual reality (VR) environment. Results show that the CatBoost classifier achieved the highest performance with 95.1% accuracy. In addition, three important channel locations (AF3, F3, and F4) and two frequency bands (beta and gamma) were found to be closely associated with hazard perception.
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