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Relationship between Macroeconomic Indicators and Economic Cycles in U.S
Hiroshi Iyetomi1, Hideaki Aoyama2,3,4, Yoshi Fujiwara4
1Niigata University, Department of Mathematics, Niigata, 950-2181, Japan. hiyetomi@sc.niigata-u.ac.jp.
New methods reveal complex co-movements in US economic indicators, uncovering a revised lead/lag order and identifying key economic events. Some indicators display leading characteristics, suggesting potential improvements for existing economic forecasting tools.
Area of Science:
- Economics
- Econometrics
- Time Series Analysis
Background:
- Macroeconomic indicators are crucial for understanding economic health.
- Existing lead/lag analyses may not fully capture complex interdependencies.
Purpose of the Study:
- To analyze co-movements among 57 US macroeconomic indicators using novel methods.
- To establish a new hierarchical order of lead/lag relationships for these indicators.
- To identify significant economic events and assess indicator performance.
Main Methods:
- Complex Hilbert Principal Component Analysis (CHPCA) for identifying co-movements and correlations.
- Rotational Random Shuffling (RRS) for statistical significance testing.
- Hodge decomposition to determine the hierarchical order and understand lead/lag dynamics.
- Clustering analysis for positively serially correlated changes.
Main Results:
- Statistically significant complex correlations and lead/lag relationships were confirmed among US economic indicators.
- A new lead/lag order was established using CHPCA and Hodge decomposition.
- Collective negative co-movements were identified around the Dot.com bubble (2001) and the Global Financial Crisis (2008).
- Specific events like Hurricane Katrina (2005) and the Oil Price Crisis (2008) were pinpointed.
- Coincidental and lagging indicators were found to exhibit leading characteristics.
Conclusions:
- The novel methods provide deeper insights into the complex dynamics of macroeconomic indicators.
- The established lead/lag order offers a refined understanding of economic indicator relationships.
- Findings suggest that current macroeconomic indicators can be improved, potentially enhancing economic forecasting accuracy.
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