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All Journal JEMMA | Journal of Economic, Management and Accounting JAMBURA JOURNAL OF PROBABILITY AND STATISTICS
Eka Purnama
IAIN Sultan Amai Gorontalo
Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Social Sciences

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APLIKASI METODE SINGULAR SPECTRUM ANALYSIS (SSA) PADA PERAMALAN CURAH HUJAN DI PROVINSI GORONTALO Eka Purnama
Jambura Journal of Probability and Statistics Vol 3, No 2 (2022): Jambura Journal Of Probability and Statistics
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjps.v3i2.16537

Abstract

This paper aims to study the forecasting model of rainfall in Gorontalo Province and forecast it for 2022-2023. Usually, rainfall data is seasonal. In this study, we used Singular Spectrum Analysis (SSA) with the Linear Recurrent Formula (LRF) method. The result showed that the models of rainfall forecasting in Gorontalo using SSA with windows lengthL=36 obtained MAPE of forecasting in out-sample was 0,029 or 2,9 %. So that SSA was very accurate in forecasting rainfall in Gorontalo Province in 2022-2023. The forecasting result showed that rainfall was relatively high generally. So, it is necessary for the government to take policies to avoid the negative impact that can be caused.
Analisis Pertumbuhan Ekonomi Sulawesi Selatan Menggunakan Regresi Spline Didiharyono D.; Muh. Syukri; Eka Purnama
JEMMA (Journal of Economic, Management and Accounting) Vol 6, No 1 (2023): Maret 2023
Publisher : Universitas Andi Djemma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35914/jemma.v6i1.1753

Abstract

Penelitian ini bertujuan menganalisis pertumbuhan ekonomi Kabupaten dan Kota di Sulawesi Selatan Tahun 2022. Metode analisis yang digunakan yaitu analisis regresi nonparametrik spline dengan menganalisis data sekunder yang diperoleh dari BPS. Hasil analisis menunjukan bahwa Kabupaten dan Kota di Sulawesi Selatan yang memiliki pertumbuhan ekonomi tertinggi adalah Kota Makassar sebesar 34,86% dan yang memiliki pertumbuhan ekonomi terendah adalah Kepulauan Selayar sebesar 1,25%. Pemilihan titik knok optimal, satu titik Knot dengan nilai GCV minimum sebesar 37.87, dua titik knot dengan nilai GCV minimum sebesar 1.97, tiga titik Knot dengan nilai GCV minimum sebesar 2.21. Dengan demikian, nilai GCV yang paling optimal digunakan adalah dua titik knot dengan nilai GCV minimum sebesar 1.97 dan diperoleh model yang optimal dengan nilai R2 yang diperoleh sebesar 52% mempengaruhi variable respon.
Co-Authors Didiharyono, D. Muhammad Syukri