  The Internet of Behavior is a research theme that aims to analyze human
behavior data on the Internet from the perspective of behavioral psychology,
obtain insights about human behavior, and better understand the intention
behind the behavior. In this way, the Internet of Behavior can predict human
behavioral trends in the future and even change human behavior, which can
provide more convenience for human life. With the increasing prosperity of the
Internet of Things, more and more behavior-related data is collected on the
Internet by connected devices such as sensors. People and behavior are
connected through the extension of the Internet of Things -- the Internet of
Behavior. At present, the Internet of Behavior has gradually been applied to
our lives, but it is still in its early stages, and many opportunities and
challenges are emerging. This paper provides an in-depth overview of the
fundamental aspects of the Internet of Behavior: (1) We introduce the
development process and research status of the Internet of Behavior from the
perspective of the Internet of Things. (2) We propose the characteristics of
the Internet of Behavior and define its development direction in terms of three
aspects: real-time, autonomy, and reliability. (3) We provide a comprehensive
summary of the current applications of the Internet of Behavior, including
specific discussions in five scenarios that give an overview of the application
status of the Internet of Behavior. (4) We discuss the challenges of the
Internet of Behavior's development and its future directions, which hopefully
will bring some progress to the Internet of Behavior. To the best of our
knowledge, this is the first survey paper on the Internet of Behavior. We hope
that this in-depth review can provide some useful directions for more
productive research in related fields.

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