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Spatial Data Science for Regional Pattern Analysis: Dynamic Time Warping-Based Clustering of East Java’s Economic Indicators Fitriani, Rahma; Sumarminingsih, Eni; Diartho, Herman Cahyo
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.569-578

Abstract

Motivated by the need to better capture dynamic regional disparities, this study examines spatial and temporal development patterns in East Java, Indonesia, using spatial panel data from 2020 to 2023. A data-driven framework is proposed that integrates Principal Component Analysis (PCA) for dimensionality reduction, Dynamic TimeWarping (DTW) for temporal similarity measurement, and spatially constrained clustering using the SKATER algorithm. PCA compresses multiple socio-economic indicators, GDP growth, GDP level, Human Development Index (HDI), and population density, into a unified development profile, enabling comparison of regional trajectories over time. DTW captures non-linear temporal alignment, while SKATER preserves spatial coherence in cluster formation. The resulting clusters are used to construct an endogenous spatial weight matrix that reflects functional regional relationships rather than purely geographic adjacency. Validation using Moran’s I indicates stronger spatial autocorrelation compared to conventional contiguity-based weights, suggesting improved representation of spatial interaction. Four clusters reveal distinct development patterns and uneven regional trajectories. By integrating dimensionality reduction with temporal alignment and spatial clustering, the proposed approach extends dynamic spatial weighting toward a functional interpretation of regional dependence and offers a transferable framework for spatial data science and regional policy analysis.
Pengaruh Gaya Kepemimpinan Dan Disiplin Kerja Terhadap Kinerja Karyawan Divisi Steel pada PT. Tira Austenite Tbk Cabang Pulogadung Fitriani, Rahma; Sari , Imelda; Wilandari , Angestika
Jurnal Maneksi (Management Ekonomi Dan Akuntansi) Vol. 12 No. 4 (2023)
Publisher : Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jm.v12i4.1752

Abstract

PT. Tira Austenite Tbk is one of the leading Trade Industry in Indonesia. Required to have good employees in accordance with the desired qualifications in order to improve company performance and be ready to face increasingly rapid industrial competition. Company leaders must motivate employees to have high discipline in order to achieve company goals. This study aims to determine the effect of leadership style (X1) on employee performance (Y), to determine the effect of work discipline (X2) on employee performance (Y). as well as knowing the effect of leadership style and work discipline on employee performance. This study used a quantitative method with a questionnaire distribution technique to obtain primary data from employees of the Steel Division of PT. Tira Austenite Tbk Pulogadung Branch. The sample of this research is 50 employees using saturated sampling technique. The results of this study found that the Leadership Style variable (X1) has a significant and positive effect on performance (Y) with a tcount value of 4.122 > ttable of 2.011 and a significant value of 0.00 <0.05. Work Discipline Variable (X2) has no significant and negative effect on Employee Performance (Y) with a tcount value of -0.889 < ttable of 2.011 and a significant value of 0.379 > 0.05. Leadership Style (X1) and Performance Discipline (X2) simultaneously influence Employee Performance (Y) in the steel division at PT.Tira Austenite Tbk Pulogadung branch.
Co-Authors Abdila, Naufal Shela Agung Murti Nugroho Agus Dwi Sulistyono, Agus Dwi Akhmad Mansyur, Akhmad Al Jauhar, Hafizh Syihabuddin Alfi Fadliana Ani Budi Astuti Antonius Totok Priyadi Atiek Iriani, Atiek Atiek Iriany Aulia, Natasha Azizah, Amelia Nur Darmanto Darmanto Darmanto Dianiati, Aldila Nur Eddi Basuki Kurniawan Encep Supriatna Eni Sumarminingsih Fernandes, Adji Achmad Rinaldo Firdausi, Rizka Firsa, Pocut Zahran Nada Gusganda Suria Manda Handoyo, Samingun Hapsari, Ulfalina Henny Pramoedyo Herman Cahyo Diartho Hermanto, Tutut Istiqomah, Nur Jaka Pratama Musashi Jannah, Friendtika Miftaqul Jannah, Friendtika Miftaqul Korniasari, Leli Dwi Kusdarwati, Heni La Onu, La Ola Lestari, Kartika Ayu Liduina Asih Primandari, Liduina Asih Loekito Adi Soehono Luthfatul Amaliana, Luthfatul Maharani, Kasih Mahendra, Di Aidil Maulana, Eka Dani Menufandu, Dahlia Gladiola Rurina Mitakda, Maria Bernadetha Ni Wayan Surya Wardhani Nofriadi Nofriadi Nugroho, Salma Fitri Nur Aisyah Nurachmad Sujudwijono Pasca, Paunfia Meiditha pramoedyo, henny Pratama, Muhamad Liswansyah Pribadi, Teddy Ramadhan, Apry Zakaria Ramifidisoa, Lucius Risfandi Ruszardi, Luzar Dwain Ry, Mohd Dzaky Sari , Imelda Sarini Yusuf Septya Hadiningrum Sesilia Seli Sholihah, Suma Suci Solimun, Solimun Suci Astutik Sumarminingsih, Eni Sundyni, Reza Chyta Syukrilla, Wara Alfa Tampubolon, Risma Hartati Tri Pratiwi, Elly Andita Umami, Asri Rizza Vierkury Metyopandi Vivit Senja, Dinda Rinai Waego Hadi Nugroho Widya Reza Wigbertus Ngabu Wilandari , Angestika Yusrina Nur Dianati Zakaria Zamelina, Armando Jacquis Federal