人类反应等待时间分布中媒体曝光的新幂律特征
New Power Law Signature of Media Exposure in Human Response Waiting Time Distributions
摘要:
我们研究了对2004年12月26日苏门答腊地震引发的海啸所造成的破坏的人道主义反应,通过捐款来衡量,发现它随时间按幂律衰减~ 1/t^(alpha),其中alpha=2.5 +/- 0.1。这种行为被认为是优先级排队过程的罕见结果,在这个过程中,个人执行任务的速度略快于新任务出现的速度。我们相信这是第一个经验证据记录最近预测的政权,并提供额外的独立证据表明,它是由于媒体对这一捐赠“任务”的强烈关注而产生的。
英文摘要:
We study the humanitarian response to the destruction brought by the tsunami generated by the Sumatra earthquake of December 26, 2004, as measured by donations, and find that it decays in time as a power law ~ 1/t^(alpha) with alpha=2.5 +/- 0.1. This behavior is suggested to be the rare outcome of a priority queuing process in which individuals execute tasks at a rate slightly faster than the rate at which new tasks arise. We believe this to be the first empirical evidence documenting this recently predicted regime, and provide additional independent evidence that suggests it arises as a result of the intense focus placed on this donation "task" by the media.
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