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All Journal JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP) Journal of Computer Science, Information Technology and Telecommunication Engineering (JCoSITTE) Indonesian Journal of Education, Social Sciences and Research (IJESSR) Jurnal ABDIMAS Budi Darma Data Sciences Indonesia (DSI)
Ferdy Riza
Universitas Muhammadiyah Sumatera Utara
Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Analisis Performa Rasio Kompresi Pada Metode Differensiasi ASCII Dan Lempel Ziv Welch (LZW) Tommy Tommy; Rosyidah Siregar; Amir Mahmud Husein; Mawaddah Harahap; Ferdy Riza
JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP) Vol. 1 No. 2 (2018): Jutikomp Volume 1 Nomor 2 Oktober 2018
Publisher : Fakultas Teknologi dan Ilmu Komputer Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/jutikomp.v1i2.225

Abstract

ASCII differentiation is a compression method that utilizes the difference value or the difference between the bytes contained in the input character. Technically, the ASCII differentiation method can be done using a coding dictionary or using windowing block instead of the coding dictionary. Previous research that has been carried out shows that the ASCII differentiation compression ratio is good enough but still needs to be analyzed on performance from the perspective of the compression ratio of the method compared to other methods that have been widely used today. In this study an analysis of the comparison of the ASCII Difference method with other compression methods such as LZW will be carried out. The selection of LZW itself is done by reason of the number of data compression applications that use the method so that it can be the right benchmark. Comparison of the compression ratio performed shows the results of ASCII differentiation have advantages compared to LZW, especially in small input characters. Whereas in large input characters, LZW can optimize the probability of pairs of characters that appear compared to ASCII differentiation which is glued to the difference values ​​in each block of input characters so that in large size characters LZW has a greater compression ratio compared to ASCII differentiation.
Analisa Frekuensi Hasil Enkripsi Pada Algoritma Kriptografi Blowfish Terhadap Keamanan Informasi Ferdy Riza; Nurmala Sridewi; Amir Mahmud Husein; Muhammad Khoiruddin Harahap
JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP) Vol. 1 No. 1 (2018): Jutikomp Volume 1 Nomor 1 April 2018
Publisher : Fakultas Teknologi dan Ilmu Komputer Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/jutikomp.v1i1.233

Abstract

The ease of sending data with the development of internet technology technology is now a concern, especially the problem of data confidentiality, integrity and information security. Cryptography is one of the techniques used to maintain data confidentiality and information security, the application of cryptographic techniques for information security and data integrity is highly dependent on the formation of keys. In this study proposed a frequency analysis approach to measure the level of information security of blowfish encryption results to determine the distribution form of each character used in the text and find out the exact frequency of each character used in the test text data. The encryption algorithm and description of blowfish method against plaintext are proven to be accurate, but the longer the key character used will greatly affect the level of information security that came from encryption process, this is based on the results of the frequency analysis conducted.
Sales Digital Cashier Application Development Using Website (Case Study : Gogo Bakery) Andrew Louis; Ferdy Riza; Allwine Allwine
Journal of Computer Science, Information Technology and Telecommunication Engineering Vol 3, No 1 (2022)
Publisher : Universitas Muhammadiyah Sumatera Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jcositte.v3i1.9411

Abstract

Cash register technology can simplify and optimize payment transaction management. The activity of buying and selling goods cannot be separated from sales transactions and the sales transaction process cannot be separated from the cashier. GOGO Bakery is a trading shop engaged in the sale of bread. At this store, the transaction process, data processing, and report generation have not been managed computerized, until now this store still has not provided satisfactory and ineffective service, because the payment process at the cashier is not optimal and also the provision of product and price information is not listed properly, which causes consumers to not know the prices and the latest products in the store before buying. In stores, there are usually a lot of item data, transaction data, and others that are impossible to memorize. for that,
Design of Student Values Information System At Stmik Methodist College Binjai Aprida Br Tarigan; Reza Alamsyah; Ferdy Riza
Indonesian Journal of Education, Social Sciences and Research (IJESSR) Vol 2, No 3 (2021)
Publisher : Indonesian Journal of Education, Social Sciences and Research (IJESSR)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/ijessr.v2i3.8553

Abstract

Information technology in this modern era has developed so fast and sophisticated. Every education sector is expected to be able to utilize information technology as a support for operational activities in producing information. STMIK Methodist Binjai is one of the institutions that uses computerization in its data processing, such as processing academic grades and making final grades in the form of Study Result Cards (KHS). The problems that occur today are related to the procedures carried out in the process of processing academic grades. Such as when filling out the KRS which still uses handwriting, and the printing of the KHS which is not updated because it is not well organized between lecturers and the study program.
Analisis dan Prediksi Data Penjualan Menggunakan Machine Learning dengan Pendekatan Ilmu Data Ferdy Riza
Data Sciences Indonesia (DSI) Vol. 1 No. 2 (2021): Article Research Volume 1 Number 2, Desember 2021
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (801.852 KB) | DOI: 10.47709/dsi.v1i2.1308

Abstract

Pendekatan Data Science (ilmu data) memberi peluang besar untuk menggunakan data history dan mengubahnya menjadi wawasan yang berguna untuk membangun model prediksi penjualan masa depan. akan tetapi, model prediksi membutuhkan analisis data tertentu untuk menghasilkan model yang kuat, termasuk jumlah pelanggan, jumlah pelanggan yang hilang, tingkat penjualan rata-rata serta kecenderungan musiman. Makalah ini menganalisis data penjualan menggunakan kerangka kerja ilmu data dengan desain sesuai prinsip CRIS-DM yang terdiri dari tahapan pemahaman bisnis, pemahaman data, persiapan data, pemodelan, evaluasi, dan penerapan. Pemodelan digunakan algoritma Machine Learning untuk memprediksi penjualan di masa depan yang hasil kinerjanya dievaluasi dengan RMSE, MEA dan R^2. Berdasarkan hasil pengujian algoritma XGBoost dan LightGBM menghasilkan nilai R^2 mencapai 60% dengan tingkat kesalahan deteksi terendah dibandingkan algoritma lainnya..
Perancangan Sistem Arsip Berbasis Online Pada BPP Medan Krio Farid Akbar Siregar; Fatma Sari Hutagalung; Ferdy Riza
Jurnal ABDIMAS Budi Darma Vol 3, No 2 (2023): Februari 2023
Publisher : STMIK Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/pengabdian.v3i2.5413

Abstract

Saat ini sistem arsip pada BPP Medan Krio masih menggunakan cara manual, yaitu dengan harus mendatangi tim arsip langsung ke lokasi dan memberikan berkas yang akan diarsip kepada tim arsip, hal ini menjadi kurang efisien karena memakan waktu dalam pengumpulan arsip dan beresiko arsip hilang. Sumber Daya Manusia yang ada di BPP Medan Krio bukan berasal dari profesional bidang pengembangan sistem, sehingga penggunaan teknologi belum optimal dilakukan dikarenakan keterbatasan dari kemampuan dan wawasan staff. Maka dari itu kami memberikan solusi berupa pembuatan dan pelatihan sistem arsip online sehingga berkas-berkas pengarsipan dapat dikumpulkan dari jauh (online) tanpa harus mendatangi tim arsip ke lokasi. Rencana kegiatan yang nanti akan tim lakukan yaitu dimulai dengan sosialisasi mengenai sistem yang akan ditawarkan kepada pihak mitra dan pengumpulan data yang diperlukan, lalu kemudian tim membuat aplikasi yang diusulkan kepada mitra bersama dengan modul penggunaan aplikasi dan simulasi penggunaan aplikasi oleh tim. Setelah aplikasi dan modul sudah rampung kemudian tim akan melakukan pelatihan penggunaan aplikasi kepada BPP medan krio yang diakhiri dengan evaluasi pelatihan serta penyusunan laporan akhir.Dengan harapan pelatihan tersebut dapat membantu para staff untuk meningkatkan pelayanan sistem pengarsipan yang ada di BPP medan Krio dengan cara online.
Co-Authors Allwine Allwine Amir Mahmud Husein, Mawaddah Harahap, Amir Andrew Louis Aprida Br Tarigan Farid Akbar Siregar Fatma Sari Hutagalung Mawaddah Harahap Muhammad Khoiruddin Harahap Nurmala Sridewi Reza Alamsyah Siregar, Rosyidah Tommy Tommy