7.18 Extend the EM algorithm for classical factor analysis, (7.161)-(7.166), to the time series case of maximizing

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7.18 Extend the EM algorithm for classical factor analysis, (7.161)-(7.166), to the time series case of maximizing ln L



B(ωj),D (ωj)



in (7.177).

Then, for the data used in Example 7.16, find the approximate maximum likelihood estimates of B(ωj) and D (ωj ), and, consequently, Λt.

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