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Observation and Analysis for the Semiconductor Cycle with a State ...

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Modeling:<br />

Structural Time Series Model<br />

• Structural Time Series Model (Harvey 1989) represents Time<br />

series observations (y n : n=1,..,T) by a linear combination of<br />

Trend(t n ), Seasonality(s n ), <strong>and</strong> <strong>Cycle</strong>(c n )<br />

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Graduate School of Business Science/University of Tsukuba<br />

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