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Journal : Journal of Dinda : Data Science, Information Technology, and Data Analytics

Using the Random Forest Method in Predicting Stock Price Movements Muhammad Amsari Lubis; Samsudin Samsudin
Indonesian Journal of Data Science, IoT, Machine Learning and Informatics Vol 5 No 1 (2025): February
Publisher : Research Group of Data Engineering, Faculty of Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/dinda.v5i1.1765

Abstract

In the era of globalization, rapid technological advancements have significantly impacted the financial sector, particularly stock price movements. This study aims to contribute to financial analysis and investment by providing a predictive tool to help investors make more informed investment decisions. The Random Forest method, a machine learning al-gorithm known for effectively handling complex and heterogeneous data, is used to pre-dict stock price movements. The study utilizes historical stock data from companies listed on the Indonesia Stock Exchange (IDX) as a case study. The resulting predictive model demonstrates high accuracy, achieving 98% accuracy, with an R-squared (R²) value of 0.94 and a Mean Absolute Percentage Error (MAPE) of 0.40%. This research identifies key factors, such as Previous, High, Low, Volume, and Change, that significantly influ-ence stock price movements. The strengths of this study lie in its use of an extensive da-taset, involving 104 stock codes as examples, and its integration of interactive visualiza-tion via Streamlit to enhance data interpretation. This tool is expected to be a reliable solu-tion that provides superior predictive capabilities compared to traditional methods and supports more accurate investment analysis in the stock market.
Implementation of ROP and EOQ in the Stock Management Information System at Panglong Siagian Bersaudara Based on Website Disnu Panggabean; Samsudin Samsudin
Indonesian Journal of Data Science, IoT, Machine Learning and Informatics Vol 5 No 1 (2025): February
Publisher : Research Group of Data Engineering, Faculty of Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/dinda.v5i1.1774

Abstract

Advances in information and communication technology have encouraged the transformation from manual systems to digital-based systems, including in stock management. This research aims to develop a website-based stock management information system using the Reorder Point (ROP) and Economic Order Quantity (EOQ) methods for Panglong Siagian Bersaudara. ROP is used to determine reorder time, while EOQ calculates the optimal number of items that must be ordered to minimize total costs. The system was designed using the Rapid Application Development (RAD) method, resulting in a fast and structured design. The implementation results show that the system is able to increase stock management efficiency by reducing the risk of shortages or excess items, optimizing storage costs, and supporting real-time data-based decision making. With the integration of ROP and EOQ, this system provides a comprehensive solution for stock management at Panglong Siagian Bersaudara.
Co-Authors Abdullah Abdullah Adinda Ayu Mega Pramesti Adinda Priyamita Adinda, Sity Tree Adnan Buyung Nasution Afridayani Afridayani Afsha Zahara Ahmad Hariandy Harahap Alchemi Putri Juliantika Kusdiana Alda Penira Ali Ikhwan Ali Ikhwan Almansah, Dani Alyan Fatwa Alyuda, M Farhan Amalia Syahfitri Andika, Reza Anggika Wardani Anggika Wardani Aninda Muliani Aninda Muliani anju sitompul Aryati Aryati Asbullah, Jumjumi Aulia Pratama Tambunan Bagus Setiawan Bagus Setiawan Batubara, Ayu Azzahra Beni Frandian Bilbi Huzaimi Mahmuda Dalimunthe, Tursina Juliani Danang Wahyu Wicaksono Dandi Fratama Wardana Dedyka Syahputra Dian El Arafiah Saragih Dian Pratiwi Diana Asmarani Siregar Diana, Dwi Rahmadani Ivan Disnu Panggabean Dwi Nenda Putri Dwi Silviana Elfany Rizqi Syaputri Elly Supiah Pane Erlina, Fazira Fadiah Nurhani Fadiah Nurhani Fadillah, Muhammad Rizki Fahira Khalisyah Risqullah Fajrillah, Fajrillah Fara Diva, Anggrayani FATHIYA HASYIFAH SIBARANI Fauzia Mahyarani Fitrah Al Mubaroq Geubrina Rizka Utami Sinaga Ginting, Natal Gustantia, Dwi Haloho, Melanthon Pardamean Hasibuan, Inneke Nugroho Hasibuan, Siti Aisyah Husna, Fauziatun Ichsan, Muhammad Ichsan Ilka Zufria Indri Ayu Ningrum Indriana Siagian Jaka Gunawan Juliati Nasution, Yenni Samri Jumjumi Abullah Laila Nurzanah Lubis, Ali Topan Lutfil, Muhammad Lutfil Amin Siregar M Fakhriza M. Fakhriza Maulana, Dimas Krisna Maya Juliana Ritonga Merliana Putri Hasibuan Mhd. Nazar Alfian Harahap Mia Nurjannah Miftah Siregar Mohammad Badri Muhamad Alda Muhammad Amsari Lubis Muhammad Arifin Lubis Muhammad Dedi Irawan Muhammad Hendrik Koto Muhammad Hendrik Koto Muhammad Ikhsan Muhammad Khoir Al Alim Manurung Muhammad Naufal Tiyar Muhammad Rafli Hakim Muhammad Rizky Dermawan Muhammad Syafri Fauzi Muliani Harahap, Aninda Muthmainnah Mutiara Indriani Mutia Dwi Pratika Mutiara Sakinah Nadhilah Zahrina Nasution, Anggi Refachriati Nasution, Muhammad Irwan Padli Novri Karno Dwi Putra Nurhadijah Nurhadijah Nurhalizah Nurhalizah Nurhidayah Simbolon Nurini Siregar Pane, Rizky Hidayat Pasaribu, M Arif Rahmat Poppy Hidayah Pradana, Reza Pradana, Surya Ardi Pratiwi, Yulisa Nanda Prawira, Yudhi Prawira PRIA MITRA PURBA Purba, Rizki Ikhwansyah Purwani, Desy Putra, Muklas Adi Putri Sri Rezeki Rahma Azizah Lubis Rahma Dipa Salsabil Rahmadani, M.A. Annisa Raissa Amanda Putri Rakha, Riyan Hidayat Ramadhani, Vidya Raudhatul Jannah Rayhan Alpatih Atsil Reni Yunita Reza Pradana Riri Syafitri Lubis Rivaldi, Rifky Rizal, Yazid Khairul Rohmad Shobirin Roza, Yuda Fakhri Samsul Bahri Siagian Sandra Fitrie Saripah Aini Pohan Septiana Dewi Andriana, Septiana Dewi Sinaga, Rani Jumiannisa Siregar, Saparuddin Sri Astuti Sri Astuti Suendri Suendri Suendri Suendri, Suendri Sulistio, Rahmat Syahranitazli Syahranitazli Syahranitazli Tamara Putri Tamaulina Tama Tasya Azra Rizkya Umri Tasya Maulariqa Insani Taufik Qurrahman Taufiq Annur Harahap Teguh Kurniawan Triase Triase triase Triase Triase Triase Triase Triase Triase, Triase Ulfa Fadilah Usman, Usman Winda Junarda Wulan Suci Wulandari, Novika Yani, Sefty Yanti, Asni Rahma Yudha Sansena Yudhanata, Ridho Dwi Zahra Azura