Purpose: Physical gatherings at social events have been found as one of the main causes of COVID-19 transmission all over the world. Smartphone has been used for contact tracing by exchanging messages through Bluetooth signals. However, recent confirmed cases found in venues indicated that...

Visual analytics is widely used to explore data patterns and trends. This work leverages cancer data collected by World Health Organization (WHO) across a hundred of cancer registries worldwide. In this study, the authors present a visual analytics platform, IBM Watson Analytics, to explore the...

Self-service technologies have been widely adopted in those industries involving delivering physical products by services, in which consumers evaluate the product both from the product value and the service value. A typical service delivery system usually involves sales agents or self-service...