TARU PUBLICATIONS
Author

Dewi Rahardja

U. S. Department of Defense, MD 20755, Fort Meade,, 20755, U.S.A.

Published papers
3
Citations
1
Views
586
Downloads
17

Publications

3 papers
Open Access Research Article·pp. 769–784·Vol. 27, Issue 4May 2024

Advantages and disadvantages comparison of time-series forecast computing via microsoft excel and three different SAS products

Dewi Rahardja

Published Online: 27 May 2024DOI: 10.47974/JSMS-983

In this paper: Forecasts are never as accurate as organizations need or desire them to be. Yet, lots of forecasting consultants and software vendors are willing to take organizations money in exchange for unfulfille...

AbstractReferencesFull Text PDF (511 KB)Views: 165Downloads: 5Citations: 1
Open Access Research Article·pp. 569–578·Vol. 27, Issue 3Mar 2024

Statistical time-series forecast error and bias assessment using  hold-out samples and a single benchmark (data-reduction) scoring metric

Dewi Rahardja

Published Online: 30 Mar 2024DOI: 10.47974/JSMS-974

In this paper: In Time-Series (TS) forecast modeling, we utilize a Hold-Out (HO) sample to assess a candidate model forecast error and bias, with the Mean Absolute Percentage Error (MAPE) as a single benchmark (data...

AbstractReferencesFull Text PDF (422 KB)Views: 178Downloads: 8Citations: 0
Open Access Research Article·pp. 787–800·Vol. 26, Issue 4May 2023

Computational statistics for time-series forecasts via SAS/ETS 9.4 drop-down menu

Dewi Rahardja

Published Online: 10 Aug 2023DOI: 10.47974/JSMS-877

In this paper: In this paper, using the Statistical Time Series (TS) methodologies reviewed in the literature, we present a step-by-step computational statistics procedure to execute TS forecasts computing via a poi...

AbstractReferencesFull Text PDF (701 KB)Views: 243Downloads: 4Citations: 0