论文标题
比特币回报和公众对Covid-19的关注：时机和个人主义重要吗？
Bitcoin Returns and Public Attention to COVID-19: Do Timing and Individualism Matter?
论文作者
论文摘要
储层计算是预测湍流的有力工具，其简单的架构具有处理大型系统的计算效率。然而，其实现通常需要完整的状态向量测量和系统非线性知识。我们使用非线性投影函数将系统测量扩展到高维空间，然后将其输入到储层中以获得预测。我们展示了这种储层计算网络在时空混沌系统上的应用，该系统模拟了湍流的若干特征。我们表明，使用径向基函数作为非线性投影器，即使只有部分观测并且不知道控制方程，也能稳健地捕捉复杂的系统非线性。最后，我们表明，当测量稀疏、不完整且带有噪声，甚至控制方程变得不准确时，我们的网络仍然可以产生相当准确的预测，从而为实际湍流系统的无模型预测铺平了道路。
The evolution of the pandemic and people's concern over it have an impact on the Bitcoin market, while the extent of individualism could differentiate investor behaviors in the financial market during the pandemic. This paper examines whether public attention to COVID-19 in individualistic countries versus collectivistic countries Granger causes Bitcoin returns between February 11, 2020 and May 09, 2022. To this end, eight large economies with a individualistic or collectivistic tradition are chosen for analyses. By using rolling and recursive-evolving algorithms, it accounts for the timing of COVID-19 issues that vary by country and circumvents the potential estimation bias that a traditional Granger causality test may suffer due largely to Google's sampling variation for different time frames. In general, collectivistic countries are found to have stronger causal impacts on Bitcoin returns than individualistic countries.
