2 research outputs found
Emergence of Scenario-Appropriate Collaborative Behaviors for Teams of Robotic Bodyguards
We are considering the problem of controlling a team of robotic bodyguards
protecting a VIP from physical assault in the presence of neutral and/or
adversarial bystanders. This task is part of a much larger class of problems
involving coordinated robot behavior in the presence of humans. This problem is
challenging due to the large number of active entities with different agendas,
the need of cooperation between the robots as well as the requirement to take
into consideration criteria such as social norms and unobtrusiveness in
addition to the main goal of VIP safety. Furthermore, different settings such
as street, public space or red carpet require very different behavior from the
robot. We describe how a multi-agent reinforcement learning approach can evolve
behavior policies for teams of robot bodyguards that compare well with
hand-engineered approaches. Furthermore, we show that an algorithm inspired by
universal value function approximators can learn policies that exhibit
appropriate, distinct behavior in environments with different requirements.Comment: Accepted for publication at AAMAS 201
Survey on Unmanned Aerial Vehicle Networks: A Cyber Physical System Perspective
Unmanned aerial vehicle (UAV) networks are playing an important role in
various areas due to their agility and versatility, which have attracted
significant attention from both the academia and industry in recent years. As
an integration of the embedded systems with communication devices, computation
capabilities and control modules, the UAV network could build a closed loop
from data perceiving, information exchanging, decision making to the final
execution, which tightly integrates the cyber processes into the physical
devices. Therefore, the UAV network could be considered as a cyber physical
system (CPS). Revealing the coupling effects among the three interacted
components in this CPS system, i.e., communication, computation and control, is
envisioned as the key to properly utilize all the available resources and hence
improve the performance of the UAV networks. In this paper, we present a
comprehensive survey on the UAV networks from a CPS perspective. Firstly, we
respectively research the basics and advances with respect to the three CPS
components in the UAV networks. Then we look inside to investigate how these
components contribute to the system performance by classifying the UAV networks
into three hierarchies, i.e., the cell level, the system level, and the system
of system level. Further, the coupling effects among these CPS components are
explicitly illustrated, which could be enlightening to deal with the challenges
in each individual aspect. New research directions and open issues are
discussed at the end of this survey. With this intensive literature review, we
try to provide a novel insight into the state-of-the-art in the UAV networks.Comment: 42 pages, 19 figures and 11 table