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arXiv 2005.12788cs.MM
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视频传输中的自学习强化学习

Self-play Reinforcement Learning for Video Transmission

Tianchi Huang, Rui-Xiao Zhang, Lifeng Sun

摘要:

视频传输业务采用自适应算法,保证用户需求。现有的技术往往是优化和评估的函数,线性组合几个加权指标。然而,我们观察到给定的功能未能准确地描述需求。因此,这些建议的方法最终可能会违反最初的需要。为了消除这种担忧,我们提出了\emph{Zwei},一个自我发挥的强化学习算法的视频传输任务。Zwei旨在通过直接利用实际需求来更新策略。从技术上讲,Zwei从同一起点采样了许多轨迹,并立即估计了比赛结果的胜率。在这里,竞争结果表示哪个轨迹更接近所分配的要求。随后,Zwei通过最大化胜率来优化策略。为了构建Zwei,我们开发了仿真环境,设计了适当的神经网络模型,并发明了用于处理各种视频传输场景的不同要求的训练方法。对两个代表性任务的跟踪驱动分析表明,Zwei忠实地根据分配的需求进行了自我优化,在所有考虑的场景下都优于最先进的方法。

英文摘要:

Video transmission services adopt adaptive algorithms to ensure users' demands. Existing techniques are often optimized and evaluated by a function that linearly combines several weighted metrics. Nevertheless, we observe that the given function fails to describe the requirement accurately. Thus, such proposed methods might eventually violate the original needs. To eliminate this concern, we propose \emph{Zwei}, a self-play reinforcement learning algorithm for video transmission tasks. Zwei aims to update the policy by straightforwardly utilizing the actual requirement. Technically, Zwei samples a number of trajectories from the same starting point and instantly estimates the win rate w.r.t the competition outcome. Here the competition result represents which trajectory is closer to the assigned requirement. Subsequently, Zwei optimizes the strategy by maximizing the win rate. To build Zwei, we develop simulation environments, design adequate neural network models, and invent training methods for dealing with different requirements on various video transmission scenarios. Trace-driven analysis over two representative tasks demonstrates that Zwei optimizes itself according to the assigned requirement faithfully, outperforming the state-of-the-art methods under all considered scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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