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Sales Data Analysis using Linear Regression Algorithm on Raw Water Sales Rohayati, Eti; Martanto; Arif Rinaldi Dikananda; Dede Rohman
Journal of Artificial Intelligence and Engineering Applications (JAIEA) Vol. 4 No. 2 (2025): February 2025
Publisher : Yayasan Kita Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59934/jaiea.v4i2.809

Abstract

This study aims to assess the effectiveness of linear regression algorithm in predicting raw water demand by considering customer transaction data, raw water volume, and seasonal variables. The method used is Knowledge Discovery in Databases (KDD), including data selection, preprocessing, transformation, data mining, and result evaluation. The dataset is divided 80% for training and 20% for testing. The analysis results show that the linear regression model has a coefficient of determination (R²) of 0.77, which means that the model can explain 77% of the data variability. The prediction error value is low, with Mean Absolute Error (MAE) 0.06, Mean Squared Error (MSE) 0.01, and Root Mean Squared Error (RMSE) 0.08, indicating good accuracy. In the comparison between actual and predicted values, for actual data of 7,000 liters, the model predicts 7,984.70 liters. The variable number of customer transactions has the greatest influence on raw water demand, with a coefficient of 16,940.46, while seasonal factors have less influence. Based on these findings, it can be concluded that the linear regression algorithm is effective in predicting raw water demand, however further development is required to improve accuracy at extreme values, by adding variables or using more complex algorithms.
Sistem Retur Barang Pada Program Garansi Bebas Pengembalian di E-Commerce Shopee Perspektif Khiyar Syarat Rohayati, Eti; Ja’far, A Kumedi; Faizal, Liky
JUSTICIA SAINS - Jurnal Ilmu Hukum Vol 10, No 1 (2025): JUSTICIA SAINS: Jurnal Ilmu Hukum
Publisher : Universitas Sang Bumi Ruwa Jurai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24967/jcs.v10i1.3697

Abstract

The development of digital technology has driven the rapid growth of the e-commerce sector, one of which is through the Shopee platform which provides a Free Return Guarantee program. This program aims to increase consumer confidence by giving the right to return goods if they do not match the description, are damaged, or for reasons of "changing your mind." However, in practice, this return mechanism raises problems, especially for sellers, such as the return of goods that do not meet the requirements, for example in damaged or used conditions. This problem creates an imbalance between the rights of buyers and sellers, making it interesting to study further. This study aims to analyse the mechanism for returning goods in the program using the perspective of khiyar kondisi in muamalah fiqh, which emphasizes fairness in transactions through mutual agreement terms, condition of goods, and clear duration. The research method used is a descriptive qualitative approach, with data obtained through documentation and interviews. Documentation includes a literature review related to the theory of khiyar kondisi and Shopee's return policy, while interviews were conducted with sellers and buyers to understand direct experiences related to this program. The results of the study show that the Shopee return mechanism meets several principles of khiyar kondisi, such as a clear return duration and agreement through platform terms. However, the main weaknesses lie in excessive flexibility, lack of strict verification of returned goods, and limited seller rights to reject returns of goods that do not meet the requirements. In conclusion, this program requires improvements in the return mechanism to create more balanced justice for buyers and sellers and to align the policy with the values of muamalah fiqh
STUDI LITERATUR: METODE SIGNIFIKAN DAN OBYEK PENDIDIKAN INKLUSIF DALAM KEBIJAKAN PEMERINTAH Kristiyaningsih, Dewi Lestari; Rohayati, Eti; Rusana, Reni Palupi Ida; Abdillah, Fuad
MANAJERIAL : Jurnal Inovasi Manajemen dan Supervisi Pendidikan Vol. 6 No. 1 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/manajerial.v6i1.9400

Abstract

Inclusive education has emerged as a global priority in the pursuit of equitable, quality education for all students, regardless of their background or abilities. However, implementation in Indonesia faces significant challenges due to its decentralized governance structure, leading to regional variations and a narrow policy perspective in practice. This research aims to analyze Indonesia's inclusive education policy, focusing specifically on how the object (target) is defined, the decentralized policy process, and its urgency toward achieving national educational justice. The study employed a qualitative library research method, utilizing a content and analytic review approach. Data collection involved the critical and systematic review of officially documented policies (such as Permendiknas No. 70/2009) and relevant secondary literature. Data analysis utilized thematic and content analysis, involving data reduction, thematic categorization, and deep interpretation to construct a cohesive scientific narrative. Principal results reveal that the policy's narrow, disability centric definition of the inclusion object and significant systemic gaps in teacher preparedness and resource distribution compromise the effectiveness of implementation methods. The study concludes that proper inclusive education requires a transition from mere physical placement to comprehensive systemic reform, supported by continuous investment and fundamental attitudinal change. This research contributes to the discourse on educational equity by highlighting the need to combine centralized guidance with decentralized flexibility to ensure national policy coherence and practical implementation across diverse contexts. ABSTRAK Pendidikan inklusif telah muncul sebagai prioritas global untuk memastikan pendidikan yang adil dan berkualitas bagi semua peserta didik. Namun, implementasi kebijakan di Indonesia menghadapi tantangan karena pendekatan desentralisasi dan perspektif sempit yang sering menyamakan inklusi dengan akomodasi Anak Berkebutuhan Khusus (ABK) saja, mengabaikan kelompok rentan lain. Tujuan penelitian ini adalah menganalisis kebijakan pendidikan inklusif di Indonesia, dengan fokus pada obyek sasaran, proses kebijakan yang terdesentralisasi, dan urgensinya terhadap keadilan pendidikan nasional. Penelitian ini menggunakan metode studi kepustakaan (library research) dengan pendekatan kualitatif. Prosedur pengumpulan data melibatkan penelaahan kritis dan sistematis terhadap sumber-sumber tertulis yang relevan. Analisis data dilakukan melalui analisis tematik yang dikombinasikan dengan analisis isi, melibatkan tahapan reduksi, kategorisasi, dan interpretasi kritis. Temuan menunjukkan bahwa fokus kebijakan yang sempit (ABK sentris) dan kesenjangan kapasitas sistemik dalam implementasi (seperti kurangnya pelatihan guru dan sumber daya) menghambat efektivitas metode inklusif yang signifikan. Disimpulkan bahwa inklusi yang sesungguhnya membutuhkan transisi dari sekadar penempatan fisik menuju reformasi struktural, didukung oleh investasi berkelanjutan dan perubahan sikap budaya, untuk mencapai keadilan pendidikan. Penelitian ini berkontribusi pada diskursus ekuitas pendidikan regional dengan memperkuat pentingnya koherensi sistemik dan strategi implementasi yang sensitif terhadap konteks sosio-kultural.