Nature2014-01-02 9:01 PM

Abrupt rise of new machine ecology beyond human response time 出人类反应时间的新兴机器生态学的突然崛起

Abstract Society's techno-social systems are becoming ever faster and more computer-orientated. However, far from simply generating faster versions of existing behaviour, we show that this speed-up can generate a new behavioural regime as humans lose the ability to intervene in real time. Analyzing millisecond-scale data for the world's largest and most powerful techno-social system, the global financial market, we uncover an abrupt transition to a new all-machine phase characterized by large numbers of subsecond extreme events. The proliferation of these subsecond events shows an intriguing correlation with the onset of the system-wide financial collapse in 2008. Our findings are consistent with an emerging ecology of competitive machines featuring ‘crowds’ of predatory algorithms, and highlight the need for a new scientific theory of subsecond financial phenomena. 论文摘要 社会上的技术型社会系统正在变得越来越快并且越来越计算机导向。 然而,远远不只是加快现在的行为,我们的研究表明由于人类失去了在真实世界进行干预的能力, 这种加速可以产生新的行为制度。分析了世界上最强大的技术社会系统的毫秒级的数据之后,我们发现了世界金融市场一个突然的转变,一个向以大量亚秒级极端事件为特征的新式全机器阶段的转变。这些亚秒级事件的扩散和2008年整个金融系统崩溃的发生之间具有有趣的相关性。 我们的发现是和一个有竞争力的以“crows”掠夺性算法为特征的新兴生态学相统一的,并且这一发现强调了需要一个新的科学理论来解释这些亚秒级金融现象。

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