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All Journal Community Development Journal: Jurnal Pengabdian Masyarakat Transcendent Journal of Mathematics and Applications
Tamimi, Afifah
Unknown Affiliation
Humanities Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Health Professions Mathematics Physics Public Health

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Comparison Of Fuzzy Time Series Chen and Fuzzy Time Series Markov Chain Methods in Forecasting Consumer Price Index in Banda Aceh Syahrini, Intan; Tamimi, Afifah; Zuhra, Rahma; Amri, Saiful; Oktavia, Rini
Transcendent Journal of Mathematics and Applications Vol 4, No 1 (2025)
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/tjoma.v4i1.46243

Abstract

The Consumer Price Index (CPI) is utilized to determine a country's inflation and deflation rate. Inflation decreases the buying power of consumers; meanwhile, continuous deflation will lead to a recession. characterized by a stagnant economy and a diminished willingness among manufacturers to innovate. The CPI trends serve as a valuable economic indicator and a standard for manufacturing costs that reflect price fluctuations at the consumer level for specific goods and services. This study aims to forecast the CPI in Banda Aceh, Indonesia, utilizing CPI data in the region from January 2017 to October 2022 by applying the Fuzzy Time Series Chen and Fuzzy Time Series Markov Chain methods. Forecasting accuracy is assessed by the Mean Absolute Percentage Error (MAPE) and Mean Absolute Error (MAE). The Fuzzy Time Series Chen method obtained a MAPE of 2.98% and an MAE of 3.64, whereas the Fuzzy Time Series Markov Chain method attained a MAPE of 1.07% and an MAE of 1.27. This indicates that the predicting accuracy of the Fuzzy Time Series Markov Chain surpasses that of Chen's Fuzzy Time Series, leading to the conclusion that CPI forecasting in Banda Aceh City utilizing the Fuzzy Time Series Markov Chain approach is more precise.
PENDAMPINGAN INNOVATIVE LEARNING SKILL MELALUI PEMBUATAN MEDIA AJAR DI RUMAH LITERASI RANGGI Sinaga, Masniawita Gloria; Rahmah, Siti; Tamimi, Afifah; Simorangkir, Rennika Irfenti Seprina; Hrp, Ardhansyah Putra; Siregar, Nurhafni; Desniarti, Desniarti
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 3 (2024): Volume 5 No. 3 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i3.30396

Abstract

Pendidikan memerlukan inovasi dalam menciptakan pengalaman belajar yang menarik dan bermakna. Kegiatan pengabdian kepada masyarakat ini dilakukan di Rumah Literasi Ranggi dengan tujuan meningkatkan keterampilan belajar inovatif (innovative learning skill) melalui pembuatan media ajar interaktif dari bahan bekas. Metode yang digunakan adalah demonstrasi dan tanya jawab. Mahasiswa PPG Prajabatan Matematika berperan sebagai fasilitator dalam mendampingi anak-anak menggunakan media seperti permainan ular tangga perkalian dan papan perkalian. Hasil kegiatan menunjukkan peningkatan pemahaman konsep perkalian, interaksi sosial, kepercayaan diri, dan keterampilan memanfaatkan sumber daya sekitar secara kreatif. Metode demonstrasi dan tanya jawab terbukti efektif dalam menciptakan lingkungan belajar yang interaktif dan menyenangkan. Kegiatan ini juga memberdayakan anak-anak sekitar dengan memberikan keterampilan dalam mengembangkan media ajar inovatif. Secara keseluruhan, kegiatan pengabdian berhasil meningkatkan pemahaman konsep matematika anak-anak melalui pendekatan yang inovatif dan interaktif, serta mendukung lingkungan belajar yang berkelanjutan dengan media pemelajaran yang sesuai kebutuhan peserta didik.
Co-Authors Desniarti, Desniarti Harahap, Ardhansyah Putra Muhammad Luthfi Nurhafni Siregar Oktavia, Rini Rahma Zuhra Saiful Amri Simorangkir, Rennika Irfenti Seprina Sinaga, Masniawita Gloria Syahrini, Intan