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Forecastable Component Analysis

Georg Goerg
;
JMLR W&CP 28 (2) : 64–72, 2013

Abstract

I introduce Forecastable Component Analysis (ForeCA), a novel dimension reduction technique for temporally dependent signals. Based on a new forecastability measure, ForeCA finds an optimal transformation to separate a multivariate time series into a forecastable and an orthogonal white noise space. I present a converging algorithm with a fast eigenvector solution. Applications to fi nancial and macro-economic time series show that ForeCA can successfully discover informative structure, which can be used for forecasting as well as classi cation. The R package ForeCA accompanies this work and is publicly available on CRAN.

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