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Introducción a Series de Tiempo Univariadas - Centro Microdatos

Introducción a Series de Tiempo Univariadas - Centro Microdatos

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Introducción a <strong>Series</strong> <strong>de</strong> <strong>Tiempo</strong> <strong>Univariadas</strong>December 31, 2010Que tiene las mismas opciones <strong>de</strong> los filtros exponenciales antes revisados, pero a<strong>de</strong>más se leagrega la opción period(#), que permite ingresar número <strong>de</strong> periodos en la estacionalidad(frecuencia). Si no se indica, por <strong>de</strong>fecto toma la frecuencia en los datos señalada en la opcióntsset.Tomemos la tasa <strong>de</strong> <strong>de</strong>sempleo <strong>de</strong>l estado <strong>de</strong> Kentucky, y obtengamos la serie filtrada utilizandoHW estacional:use urates.dta, cleartssmooth shwinters kentucky_s1 =kentuckycomputing optimal weightsIteration 0: penalized RSS = -36.028124 (not concave)Iteration 1: penalized RSS = -14.570149 (not concave)Iteration 2: penalized RSS = -14.460323 (not concave)Iteration 3: penalized RSS = -14.433905Iteration 4: penalized RSS = -14.408993Iteration 5: penalized RSS = -14.386176Iteration 6: penalized RSS = -14.38517Iteration 7: penalized RSS = -14.385166Iteration 8: penalized RSS = -14.385166Optimal weights:alpha = 0.8879beta = 0.2473gamma = 0.1244penalized sum-of-squared residuals = 14.38517sum-of-squared residuals = 14.38517root mean squared error = .2147238g kentucky_s2=F.kentucky_s1(1 missing value generated)tsline kentucky kentucky_s2, legend(label(1 "Observada") label(2"Suavizada"))48

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