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All Journal JAIS (Journal of Applied Intelligent System) Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) International Journal of Global Operations Research Journal Of Human And Education (JAHE) Jurnal Dimamu Jurnal AbdiMU Jurnal Accounting Information System (AIMS) Joong-Ki International Journal of Linguistics, Communication, and Broadcasting
Rohmanto, Ricky
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Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences Other

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Improvement of Data Mining Models using Forward Selection and Backward Elimination with Cryptocurrency Datasets Julianto, Indri Tri; Kurniadi, Dede; Fauziah, Fathia Alisha; Rohmanto, Ricky
Journal of Applied Intelligent System Vol. 8 No. 1 (2023): Journal of Applied Intelligent System
Publisher : Universitas Dian Nuswantoro and IndoCEISS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33633/jais.v8i1.7568

Abstract

Cryptocurrency is a digital currency not managed by a state or central bank, and transactions are peer-to-peer. Cryptocurrency is still considered a speculative asset and its price volatility is relatively high, but it is also expected to become an efficient and secure transaction tool in the future. The purpose of this study is to compare and improve the performance of the Data Mining Algorithm model using the Feature Selection-Wrapper with the Binance Coin (BNB) cryptocurrency dataset. The Feature Selection-Wrapper approach used is Forward Selection and Backward Elimination. The algorithms used are Neural Networks, Deep Learning, Support Vector Machines, and Linear Regression. The methodology used is Knowledge Discovery in Databases. The results showed that from a comparison using K-Fold Cross Validation with a value of K=10, the Neural Network Algorithm has the best Root Mean Square Error value of 10,734 +/- 10,124 (micro average: 14,580 +/- 0,000). Then after improving performance using Forward Selection and Backward Elimination in the Neural Network Algorithm, the best performance improvement results are shown by using Backward Elimination with RMSE 5,302 +/- 2,647 (micro average: 5,805 +/- 0,000). 
Sosialisasi Cara Membuat Desain Kemasan Produk Mockups dan Smartmockups pada Canva bagi Pelaku UMKM Desa Cikancung Rohmanto, Ricky; Hadiansyah, Rian
Jurnal AbdiMU (Pengabdian kepada Masyarakat) Vol. 3 No. 2 (2023): November
Publisher : Ma'soem University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32627/abdimu.v3i2.788

Abstract

This activity aims to provide guidance to Micro, Small and Medium Enterprises (MSMEs) in Cikancung Village on how to make product packaging designs (packaging) mockups and smartmockups using the Canva platform. The method used in this activity is the Participatory Action Research (PAR) method.  In this context, PAR will involve MSME actors in Cikancung Village in the entire research process. The results of the activity show that MSME players in Cikancung Village can make product packaging designs mockups and smartmockups in Canva, including improving the quality of packaging design, improving product image and branding, facilitating promotion and marketing, attracting more consumers, increasing product competitiveness, saving production costs, increasing sales and profits.
Design And Build Of Website – Based Cake Sales Information System At Aisyah Cake By Al-Ma’soem Rancaekek Rohmanto, Ricky; Aminah, Hana Halimah; Rismayanti, Syifa
International Journal of Global Operations Research Vol. 4 No. 3 (2023): International Journal of Global Operations Research (IJGOR), August 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i3.244

Abstract

Aisyah Cake By Al-Ma'soem Rancaekek is a food shop that was established on October 2, 2021 at Jalan Rancaekek No. 99, Sayang Jatinangor, Sumedang Regency. At this time the sales system at Aisyah Cake by Al-Ma'soem Rancaekek made sales directly by coming to the store and via telephone to make purchases or ordering goods, to record orders using notes while the sales system was semi-computerized using an application . cashier. The design of information system sales is a system created to solve problems in the sales department at Aisyah Cake By Al-Ma'soem Rancaekek. The method used in this sales information system is OOAD (Object Oriented Analysis and Design) while the model used is RUP (Rational Unified Process) with the development tool in the form of UML (Unified Modeling Language). The purpose of this research is to help alleviate the problems that occur so that the system that is run can be used anytime and anywhere.
Perancangan Sistem Informasi Pembelajaran Online Berbasis Website di MA Al Barokah Malangbong Garut Furqon, Muhamad; Rohmanto, Ricky
Jurnal Accounting Information System (AIMS) Vol. 7 No. 2 (2024)
Publisher : Ma'soem University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32627/aims.v7i2.1079

Abstract

dEvelopment of information technology (IT) has driven its integration into various aspects of life, including education. MA Al Barokah, an educational institution in Malangbong, Garut, faces the challenge of using an unoptimal internet network for teaching and learning activities. Currently, the learning process is still conducted in a conventional face-to-face manner in the classroom, which has constraints such as lesson time that can only be done during school hours and depends on the physical presence of teachers and students. To address this problem, the study aims to design and implement a web-based learning information system (e-learning) at the MA Al Barokah. It is expected to facilitate learning without time and place constraints, as well as allow the teaching and learning process to continue even if teachers or students are not physically present. The development method used is Unified Modeling Language (UML) and integrates the concept of Rational Unified Process (RUP) with the PHP programming language and MySQL database. The results of the implementation of this system show that e-learning can improve the flexibility and effectiveness of the teaching and learning process at the MA Al Barokah, as well as have a positive impact on improving the service and confidence of students' parents in the school.
Pengembangan E-Commerce Berbasis Lokal untuk Produk UMKM Di Desa Bumi Wangi, Ciparay Rohmanto, Ricky; Satria, Muhamad; Faozi, Nazwan Fata
Joong-Ki : Jurnal Pengabdian Masyarakat Vol. 3 No. 4: Agustus 2024
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/joongki.v3i4.5162

Abstract

Penelitian ini berfokus pada pengembangan platform e-commerce berbasis lokal untuk produk UMKM di Desa Bumi Wangi, Ciparay. Urgensi penelitian ini didorong oleh perkembangan pesat e-commerce global dan nasional, yang membuka peluang besar bagi UMKM untuk meningkatkan penjualan dan memperluas pasar. Di Desa Bumi Wangi, banyak UMKM yang belum memanfaatkan e-commerce secara optimal, sehingga mereka tertinggal dalam kompetisi pasar digital. Transformasi digital menjadi kebutuhan mendesak untuk membantu UMKM lokal agar tetap kompetitif dan meningkatkan pendapatan mereka.
Improving Algorithm Performance using Feature Extraction for Ethereum Forecasting Tri Julianto, Indri; Kurniadi, Dede; Rohmanto, Ricky; Alisha Fauzia, Fathia
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 8 No 1 (2024): February 2024
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v8i1.4872

Abstract

Ethereum is a cryptocurrency that is now the second most popular digital asset after Bitcoin. High trading volume is the trigger for the popularity of this cryptocurrency. In addition, Ethereum is home to various decentralized applications and acts as a link for Decentralized Finance (DeFi) transactions, Non-Fungible Tokens (NFTs) and the use of smart contracts in the crypto space. This study aims to improve the performance of the forecasting algorithm by using feature extraction for Ethereum price forecasting. The algorithms used are neural networks, deep learning, and support vector machines. The research methodology used is Knowledge Discovery in Databases. The data set used comes from the yahoo.finance.com website regarding Ethereum prices. The results show that the neural network Algorithm is the best Algorithm compared to Deep Learning and support vector machine. The root mean square error value for the neural network before feature selection is 93,248 +/- 168,135 (micro average: 186,580 +/- 0,000) Linear Sampling method and 54,451 +/- 26,771 (micro average: 60,318 +/- 0,000) Shuffled Sampling method. Then after feature selection, the root mean square error value improved to 38,102 +/- 31,093 (micro average: 48,600 +/- 0,000) using the Shuffled Sampling method
Utilization of Social Media as a Marketing Tool for Startup Entrepreneurs (Case Study of Mpasi Tibiya in Cicalengka Bandung) Suherman, Jajang; Andani, Riva; Sarusu, Armansyah M.; Kusnara, Hasti Pramesti; Rohmanto, Ricky; Mayanti, Yuni
International Journal of Linguistics, Communication, and Broadcasting Vol. 3 No. 3 (2025): International Journal of Linguistics, Communication, and Broadcasting
Publisher : Communication In Research And Publications

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijlcb.v3i3.264

Abstract

Micro, Small, and Medium Enterprises play a strategic role in the Indonesian economy, particularly in creating jobs and encouraging innovation. One sector that continues to rapidly develop is the food and beverage business, including baby food. In this regard, social media has become an important tool that allows novice entrepreneurs to market their products more effectively and efficiently. Digitalization and technological development have changed the way business is conducted, including in marketing strategies. Social media provides a great opportunity for budding entrepreneurs to reach a wider audience without incurring high costs. In this context, the 'MPASI Tibiya' business uses platforms like Instagram and WhatsApp to promote their baby food products, which are designed to meet the nutritional needs of children aged 6 to 24 months. Marketing through social media allows MPASI Tibiya to build a closer relationship with consumers. Content such as daily menu information, customer testimonials, and visual promotions become effective tools to attract the attention of young mothers who are active in the digital world. With this approach, entrepreneurs not only expand the market but also create consumer trust in the quality of their products. However, the use of social media also presents various challenges. Increasingly tight competition in the digital world, changes in platform algorithms, and criticism from customers can become obstacles in building a positive image. Therefore, an engaging and adaptive content strategy is needed to face the continuously evolving market dynamics.
Rancang Bangun Sistem Informasi Point of Sale Berbasis Web dengan Metode Scrum Yusman, Nova Indrayana; Furqon, Muhamad; Wijana, Miki; Rohmanto, Ricky
Jurnal Accounting Information System (AIMS) Vol. 8 No. 2 (2025)
Publisher : Ma'soem University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32627/aims.v8i2.1631

Abstract

PT. Niasa, like many MSMEs in Indonesia, faced significant operational challenges due to its manual transaction recording and inventory management systems. These manual processes led to crucial issues such as recording errors, data duplication, reporting delays, and difficulty in monitoring stock in real-time. This research aims to design and build a web-based Point of Sale (POS) information system to address these problems. To meet the dynamic needs of MSMEs and ensure the resulting solution aligns with user requirements, the Scrum methodology was chosen for its iterative and adaptive approach. The output of this research is a functional web-based POS system, which includes features for user, product, transaction, and report management. Implementation results show the system successfully improved operational efficiency through increased transaction speed, data accuracy, and faster report generation.
Pengukuran Kinerja Sistem Informasi Akademik Menggunakan Kerangka Kerja Cobit 4.0 Rohmanto, Ricky; Furqon, Muhamad
Jurnal Accounting Information System (AIMS) Vol. 8 No. 2 (2025)
Publisher : Ma'soem University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32627/aims.v8i2.1638

Abstract

Currently, performance measurement is very necessary for institutions that already use information technology, this is intended to assess the extent to which the level of effectiveness and efficiency of IT is to support the goals of the institution. STMIK Sumedang has conducted management and evaluation in the field of information, but in its evaluation it has not used a structured method and approach, so this is considered necessary to assess the suitability between the goals of the institution and the management that has been carried out. COBIT is one of the frameworks used to assess, measure and control the performance of institutions in managing IS / IT. COBIT can also be accepted and aligned by its users, because this framework is built from the goals, rules & policies of the institution. Then all processes are analyzed by looking at the alignment between the goals to be achieved with the procedures / policies implemented by the institution. In this study, the author uses the latest version of COBIT (Control Objective for Information and Related Technology), namely version 4.1, in the Planning organization domain. COBIT is created and standardized by IT Governance, an institution that creates an IT governance model. There are 3 management guidelines used by the Author, namely CSF (Critical Success Factors), KPI (Key Performance Indicators) and KGI (Key Goal Indicators). The results of the study conducted are to create a performance measurement of the Academic Information System (AIS) in the form of analysis, maturity level mapping and recommendations for STMIK Sumedang, which is expected to be a management model for other institutions.
Pelatihan Cara Membuat Game Edukasi Jaringan Local Area Network (LAN) Menggunakan Construct 2 Bagi Siswa SMK Rohmanto, Ricky; Tryana, Anjas; Mu’minin, Ayi Mi’razul
Journal Of Human And Education (JAHE) Vol. 4 No. 1 (2024): Journal Of Human And Education (JAHE)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jh.v4i1.658

Abstract

PKM ini bertujuan untuk memperkenalkan siswa SMK pada konsep pengembangan game edukatif dengan jaringan LAN menggunakan Construct 2. Langkah ini diharapkan dapat menginspirasi inovasi, mengasah kreativitas, serta memberikan bekal keterampilan kolaboratif yang relevan dalam dunia pendidikan dan industri. Melalui pelatihan yang terstruktur dan terukur, diharapkan tercipta landasan yang kuat bagi siswa SMK untuk merangkul teknologi jaringan dan keterampilan pengembangan game sebagai bagian integral dari pembelajaran.
Co-Authors Alisha Fauzia, Fathia Aminah, Hana Halimah Andani, Riva Dede Kurniadi Faozi, Nazwan Fata Fauziah, Fathia Alisha Furqon, Muhamad Hadiansyah, Rian Indri Tri Julianto Kusnara, Hasti Pramesti Mu’minin, Ayi Mi’razul Rachman, Tonton Taufik Rismayanti, Syifa Rizal Setiawan Sarusu, Armansyah M. Satria, Muhamad Suherman, Jajang Tryana, Anjas Wijana, Miki Yuni Mayanti Yusman, Nova Indrayana