Fantazzini Dean
Moscow School of Economics, Moscow State University, Moscow, Russia.
PLoS One. 2014 Nov 4;9(11):e111894. doi: 10.1371/journal.pone.0111894. eCollection 2014.
We propose the use of Google online search data for nowcasting and forecasting the number of food stamps recipients. We perform a large out-of-sample forecasting exercise with almost 3000 competing models with forecast horizons up to 2 years ahead, and we show that models including Google search data statistically outperform the competing models at all considered horizons. These results hold also with several robustness checks, considering alternative keywords, a falsification test, different out-of-samples, directional accuracy and forecasts at the state-level.
我们建议使用谷歌在线搜索数据来对食品券领取者数量进行即时预测和预测。我们用近3000个竞争模型进行了一次大规模的样本外预测练习,预测期长达未来两年,并且我们表明,在所有考虑的预测期内,包含谷歌搜索数据的模型在统计上优于竞争模型。在考虑替代关键词、证伪检验、不同的样本外数据、方向准确性以及州一级的预测等多项稳健性检验下,这些结果依然成立。