115 research outputs found
Efficiently Combining Human Demonstrations and Interventions for Safe Training of Autonomous Systems in Real-Time
This paper investigates how to utilize different forms of human interaction
to safely train autonomous systems in real-time by learning from both human
demonstrations and interventions. We implement two components of the
Cycle-of-Learning for Autonomous Systems, which is our framework for combining
multiple modalities of human interaction. The current effort employs human
demonstrations to teach a desired behavior via imitation learning, then
leverages intervention data to correct for undesired behaviors produced by the
imitation learner to teach novel tasks to an autonomous agent safely, after
only minutes of training. We demonstrate this method in an autonomous perching
task using a quadrotor with continuous roll, pitch, yaw, and throttle commands
and imagery captured from a downward-facing camera in a high-fidelity simulated
environment. Our method improves task completion performance for the same
amount of human interaction when compared to learning from demonstrations
alone, while also requiring on average 32% less data to achieve that
performance. This provides evidence that combining multiple modes of human
interaction can increase both the training speed and overall performance of
policies for autonomous systems.Comment: 9 pages, 6 figure
One size does not fit all: Organisational diversity in New Zealand tertiary sector ethics committees
New Zealand tertiary ethics committees may work from similar ethical principles but this article demonstrates that the way in which they operate is idiosyncratic. The paper builds on commentaries offered by current or former members of five New Zealand ethics committees on the organisation and practices of their committees. It examines differences among the committees with the aim of initiating an ongoing conversation about the work of ethics committees in the New Zealand context. It argues for the merits of diversity, transparency and openness as core principles for the work of ethics committees and as a platform for dealing with critique
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