Temporal Aggregation and Economic Time Series
时间聚合与经济时间序列AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要直接讨论经济数据时间聚合对周期、动态过程和长期持续性的影响,归入时间序列;未明确涉及预测或其他给定细分。
时间聚合与经济时间序列AI 解读 ↓
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The authors examine the effects of temporal aggregation on the estimated time-series properties of economic data. Theory predicts temporal aggregation loses information about the underlying data processes. The authors find those losses to be substantial. Monthly and quarterly data are governed by complex time-series processes with much low-frequency cyclical variation, whereas annual data are governed by extremely simple processes with virtually no cyclical variation. Cycles of much more than a year's duration in the monthly data disappear when the data are aggregated to annual observations. Also, the aggregated data show more long-run persistence than the underlying disaggregated data.