Efficient Estimation of Factor Models

In Choi

No 701, Working Papers from Nam Duck-Woo Economic Research Institute, Sogang University (Former Research Institute for Market Economy)

Abstract: This paper considers the factor model Xt = â‹€Ft + et. Assuming a normal distribution for the idiosyncratic error et conditional on the factors {Ft}, conditional maximum likelihood estimators of the factor and factor-loading spaces are derived. These estimators are called generalized principal component estimators (GPCEs) without the normality assumption. This paper derives the asymptotic distributions of the GPCEs of the factor and factor-loading space. It is shown that variances of the GPCEs of the common components are smaller than those of the principal component estimators studied in Bai (2003). The approximate variance of the forecasting error using the GPCE-based factor estimates is derived and shown to be smaller than that based on the principal component estimators. The feasible GPCE (FGPCE) of factor space is shown to be asymptotically equivalent to the GPCE. The GPCEs and FGPCEs are shown to be more efficient than the principal component estimators in finite samples.

Keywords: factor model; maximum likelihood estimation; generalized principal component estimation; feasible generalized principal component estimation (search for similar items in EconPapers)
Pages: 43 pages
Date: 2007-03, Revised 2010-12
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https://tinyurl.com/yqyrkovw Second version, 2010 (application/pdf)

Related works:
Journal Article: EFFICIENT ESTIMATION OF FACTOR MODELS (2012)
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Persistent link: https://EconPapers.repec.org/RePEc:sgo:wpaper:0701

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