5.1 Decomposing the LMCI into Contributions of Individual Indicators
We can gain more insight into the determinants of the LMCI estimates by explicitly computing
the dependence of the estimated LMCI path on the data for each indicator. Specifically, given
the linear-Gaussian specification for our dynamic factor model, the paths of the LMCI and the
indicators have a joint multivariate normal distribution. As a general property of such distributions,
the expected path of the LMCI, conditional on the data, is linear in the indicators. Thus,
we can decompose the estimated LMCI path into contributions from each indicator, holding
the remaining indicators constant. As the estimate is two-sided, in principle the entire history
5.1 Decomposing the LMCI into Contributions of Individual Indicators
We can gain more insight into the determinants of the LMCI estimates by explicitly computing
the dependence of the estimated LMCI path on the data for each indicator. Specifically, given
the linear-Gaussian specification for our dynamic factor model, the paths of the LMCI and the
indicators have a joint multivariate normal distribution. As a general property of such distributions,
the expected path of the LMCI, conditional on the data, is linear in the indicators. Thus,
we can decompose the estimated LMCI path into contributions from each indicator, holding
the remaining indicators constant. As the estimate is two-sided, in principle the entire history
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