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Journal Articles

Weekly forecast Indonesian currency during Ramadan

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Gumgum Darmawan, Wirawan Setialaksana, Ina Kusrini, Syahrul Ganda Sukmaya, Arnita, Mulianta Ginting, Dedi Rosadi, Budi N. Ruchjana
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2920, 040001 (2024)
https://doi.org/10.1063/5.0180428
Published: February 2024
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Journal Articles

Differencing effect in series-parallel architecture of NARX model for time series forecasting

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Hermansah, Dedi Rosadi, Abdurakhman, Herni Utami, Gumgum Darmawan
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2641, 030022 (2022)
https://doi.org/10.1063/5.0117393
Published: December 2022
View article titled, Differencing effect in series-parallel architecture of NARX model for time series forecasting
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Journal Articles

Hybrid MODWT-FFNN model for time series data forecasting

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Hermansah, Dedi Rosadi, Herni Utami, Abdurakhman, Gumgum Darmawan
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2192, 090005 (2019)
https://doi.org/10.1063/1.5139175
Published: December 2019
View article titled, Hybrid MODWT-FFNN model for time series data forecasting
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Journal Articles

Forecasting of internet usage by singular spectrum analysis with trend extraction method

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Gumgum Darmawan, Dedi Rosadi, Budi Nurani Ruchjana, Hermansah
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2192, 090002 (2019)
https://doi.org/10.1063/1.5139172
Published: December 2019
View article titled, Forecasting of internet usage by singular spectrum analysis with trend extraction method
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Journal Articles

Accuracy evaluation of Fourier series analysis and singular spectrum analysis for predicting the volume of motorcycle sales in Indonesia

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Yoga Sasmita, Gumgum Darmawan
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1868, 040010 (2017)
https://doi.org/10.1063/1.4995125
Published: August 2017
View article titled, Accuracy evaluation of Fourier series analysis and singular spectrum analysis for predicting the volume of motorcycle sales in Indonesia
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Journal Articles

The accuracy comparison between ARFIMA and singular spectrum analysis for forecasting the sales volume of motorcycle in Indonesia

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Yosep Oktavianus Sitohang, Gumgum Darmawan
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1868, 040011 (2017)
https://doi.org/10.1063/1.4995126
Published: August 2017
View article titled, The accuracy comparison between ARFIMA and singular spectrum analysis for forecasting the sales volume of motorcycle in Indonesia
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Journal Articles

Development of generalized space time autoregressive integrated with ARCH error (GSTARI – ARCH) model based on consumer price index phenomenon at several cities in North Sumatera province

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Hot Bonar, Budi Nurani Ruchjana, Gumgum Darmawan
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1827, 020009 (2017)
https://doi.org/10.1063/1.4979425
Published: March 2017
View article titled, Development of generalized space time autoregressive integrated with ARCH error (GSTARI – ARCH) model based on consumer price index phenomenon at several cities in North Sumatera province
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Journal Articles

Spectral analysis and markov switching model of Indonesia business cycle

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Muhammad Fajar, Sutawanir Darwis, Gumgum Darmawan
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1827, 020031 (2017)
https://doi.org/10.1063/1.4979447
Published: March 2017
View article titled, Spectral analysis and markov switching model of Indonesia business cycle
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