US weekly economic index: Replication and extension
复制了美国周度经济指数（WEI）的原始结果，并采用新方法调整数据中的季节性和波动性，显著提升了该指数的即时预测表现。
Summary We revisit the US weekly economic index (WEI) put forth by Lewis, Mertens, Stock and Trivedi (2021). In a narrow sense, we replicate their main results with data gathered from its original sources. In a wide sense, we apply the methodology established in Wegmüller, Glocker and Guggia (2023) to adjust the weekly input series for seasonal patterns, calendar day effects, and excess volatility. In a long sense, we show that our proposed data adjustment significantly improves the nowcasting performance of the WEI.