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Approximate Factor Models for Functional Time Series

Sven Otto, Nazarii Salish

arXiv 7 Jan 2022 · Econometrics

arXiv:2201.02532 · PDF · DOI · OpenAlex · Extracted main text

Abstract

We propose a novel approximate factor model tailored for analyzing time-dependent curve data. Our model decomposes such data into two distinct components: a low-dimensional predictable factor component and an unpredictable error term. These components are identified through the autocovariance structure of the underlying functional time series. The model parameters are consistently estimated using the eigencomponents of a cumulative autocovariance operator and an information criterion is proposed to determine the appropriate number of factors. Applications to mortality and yield curve modeling illustrate key advantages of our approach over the widely used functional principal component analysis, as it offers parsimonious structural representations of the underlying dynamics along with gains in out-of-sample forecast performance.

Citation extraction

60
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appendix boundary found by appendix_command · 46% of the source is main text. Read the extracted text to check this.

Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Aue, A., Norinho, D. D., and Hörmann, S (2015) On the prediction of stationary functional time series1.00063100%
2Diebold, F. X. and Li, C (2006) Forecasting the term structure of government bond yields0.64441100%
3Bai, J (2003) Inferential theory for factor models of large dimensions0.64422100%
4Bathia, N., Yao, Q., and Ziegelmann, F (2010) Identifying the finite dimensionality of curve time series0.64422100%
5Diebold, F. X. and Rudebusch, G. D (2013) Yield curve modeling and forecasting: The dynamic Nelson-Siegel approach0.64422100%
6Hays, S., Shen, H., and Huang, J. Z (2012) Functional dynamic factor models with application to yield curve forecasting0.64422100%
7Kokoszka, P. and Reimherr, M (2017) Introduction to Functional Data Analysis0.64422100%
8Lam, C. and Yao, Q (2012) Factor modeling for high-dimensional time series: Inference for the number of factors0.64422100%
9Ramsay, J. and Silverman, B (2005) Functional data analysis0.64422100%
10Stock, J. H. and Watson, M. W (2002) Forecasting using principal components from a large number of predictors0.64422100%

Showing the top 10 of 60 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
12503.126110.92843
2Dynamic Matrix Factor Models for High Dimensional Time Series0.40511
3Threshold Tensor Factor Model in CP Form0.40511