533 research outputs found
Bandit-Based Task Assignment for Heterogeneous Crowdsourcing
We consider a task assignment problem in crowdsourcing, which is aimed at
collecting as many reliable labels as possible within a limited budget. A
challenge in this scenario is how to cope with the diversity of tasks and the
task-dependent reliability of workers, e.g., a worker may be good at
recognizing the name of sports teams, but not be familiar with cosmetics
brands. We refer to this practical setting as heterogeneous crowdsourcing. In
this paper, we propose a contextual bandit formulation for task assignment in
heterogeneous crowdsourcing, which is able to deal with the
exploration-exploitation trade-off in worker selection. We also theoretically
investigate the regret bounds for the proposed method, and demonstrate its
practical usefulness experimentally
How Technology Impacts and Compares to Humans in Socially Consequential Arenas
One of the main promises of technology development is for it to be adopted by
people, organizations, societies, and governments -- incorporated into their
life, work stream, or processes. Often, this is socially beneficial as it
automates mundane tasks, frees up more time for other more important things, or
otherwise improves the lives of those who use the technology. However, these
beneficial results do not apply in every scenario and may not impact everyone
in a system the same way. Sometimes a technology is developed which produces
both benefits and inflicts some harm. These harms may come at a higher cost to
some people than others, raising the question: {\it how are benefits and harms
weighed when deciding if and how a socially consequential technology gets
developed?} The most natural way to answer this question, and in fact how
people first approach it, is to compare the new technology to what used to
exist. As such, in this work, I make comparative analyses between humans and
machines in three scenarios and seek to understand how sentiment about a
technology, performance of that technology, and the impacts of that technology
combine to influence how one decides to answer my main research question.Comment: Doctoral thesis proposal. arXiv admin note: substantial text overlap
with arXiv:2110.08396, arXiv:2108.12508, arXiv:2006.1262
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