Computer Science Insights is a scientific journal in the field of computer science and engineering. General Focus and Scope of Computer Science Insights, are Information Systems, Information Technology, Computer Science, Software Engineering, and Computer Engineering.
Classification of Sentiment in User Reviews of the Shopee App on Google Play Store Using the Naive Bayes Method
There is currently no relevant and systematic method that can classify reviews into positive and negative groups on the Shopee online shopping application. This study aims to classify reviews in order to provide solutions for the Shopee application in improving its services and customer satisfaction. This analysis is a sentiment classification relying on the Naive Bayes method, consisting of 1,000 reviews from Google Playstore. After training and testing the data with an 80% training data and 20% test data split, the model produced an accuracy value of 0.85, precision of 0.79, recall of 0.95, and an F1-score of 0.86. These values indicate that the model is capable of classifying review sentiment with a high degree of accuracy and a good balance between precision and recall. The model proved to be superior in recognizing reviews with negative sentiment compared to positive sentiment, where the recall for the negative class reached 0.96, while for the positive class it was 0.75. This study provides insight into user perceptions of Shopee and helps the application improve the user experience on the platform.
Copyright (c) 2025 Tasya Parmi, meida amanda (Author) https://creativecommons.org/licenses/by/4.0
Designing an Expert System for Molly Fish Diseases Using Forward Chaining
Ornamental fish farming, especially Molly fish (Poecilia sphenops), is becoming increasingly popular due to its high aesthetic value and ease of care. However, the high mortality rate of fish due to disease outbreaks is a major obstacle for farmers, especially those who do not have sufficient knowledge about the symptoms and treatment of fish diseases. This study aims to design an expert system for diagnosing Molly fish diseases using the forward chaining method as a tool for early identification based on observed symptoms. The study was conducted using a descriptive qualitative approach that focused on non-numerical and interpretive exploration of the phenomenon, without conducting statistical testing or direct system implementation. The results of the study produced a conceptual design of an expert system that covers 25 types of diseases, 40 main symptoms, and 25 inference rules based on if-then logic as the basis for diagnostic reasoning. Conceptually, this system is expected to help farmers recognize Molly fish diseases more systematically and efficiently, as well as serve as the basis for the development of artificial intelligence technology applications in aquaculture and ornamental fisheries
Copyright (c) 2025 M Akbar Riwanto, Muhammad Ari Ardana, Kawet Mujiono (Author) https://creativecommons.org/licenses/by/4.0
Performance Analysis of K-Nearest Neighbor and Naive Bayes Algorithms on the Wine Dataset
Advancements in computational technology have positioned classification as an essential tool for automated decision-making. This study presents a comparative analysis of the performance of two popular classification algorithms, K-Nearest Neighbor (KNN) and Naive Bayes, applied to the Wine Dataset. The research aims to determine the most optimal model in terms of accuracy and execution efficiency. A quantitative experimental method was employed, incorporating StandardScaler preprocessing and a 70% training–30% testing data split. The results show that Gaussian Naive Bayes (GNB) outperforms KNN with a perfect accuracy of 100% and the fastest execution time (0.0037 seconds). In contrast, KNN (k = 5) achieved an accuracy of 94.44% with slower computational performance. The strong performance of GNB is supported by the characteristics of the Wine Dataset, which align well with the feature independence assumption. The contribution of this study lies in providing empirical evidence and practical guidance for selecting efficient algorithms for small to medium-sized structured datasets, serving as a reference for researchers and practitioners when determining appropriate classification models for similar cases.
Copyright (c) 2025 tri wahyuni, Ayla Zhafira, Rahma Yulia Sifa (Author) https://creativecommons.org/licenses/by/4.0
Information System for Operational Vehicle Fuel Filling Based on Barcode at Gas Station KM 8
In the digital era that demands efficiency and transparency, manual recording of operational vehicle fuel usage at SPBU KM8 Indragiri Hilir presents several issues, such as potential errors, data manipulation, and difficulties in monitoring [1]. This study proposes a barcode-based information system that enables unique vehicle identification, automatic recording, fuel quota limitation, and real-time reporting [2], designed to improve operational efficiency and transparency in fuel usage [15]. Usability testing involving 25 respondents—composed of vehicle operators and SPBU staff—showed evaluation scores above 84% across all aspects, with the highest satisfaction level reaching 94%, indicating that the system is easy to learn, easy to use, and provides a positive user experience [16]. Compared to conventional methods, the system offers advantages in speed, accuracy, and ease of data auditing [12], making it a feasible modern solution for managing operational vehicle fuel usage and contributing significantly to efficiency and accountability within SPBU operations and related organizations [17].
Copyright (c) 2025 yestisartika, Usman, Ilyas (Author) https://creativecommons.org/licenses/by/4.0
Web-Based Cashier Application and Profit Recording Information System at Kedai Kopi Nusa
In the digital era, many micro, small, and medium enterprises (MSMEs) still record sales and profits conventionally, which often leads to inefficiency and inaccurate data recording. This study aims to develop a web-based cashier and profit recording system for Kedai Kopi Nusa in Tembilahan using a qualitative approach with the waterfall system development model. The application was built using PHP, MySQL, and UML modeling, and is equipped with features such as transaction processing, automatic profit calculation, stock management, and financial reporting. System testing was carried out through functionality testing and usability testing. The functionality test results showed a 100% success rate (625/625 test scenarios successful), indicating that all features worked as expected, while the usability test with 25 respondents resulted in an average score of 87.64%, categorized as very good. Overall, the system proved to improve operational efficiency, reduce errors in manual recording, and provide timely financial reports, and its implementation is expected to enhance customer service quality and strengthen business competitiveness through digital transformation.
Copyright (c) 2025 msyahrudin irul, Samsudin (Author) https://creativecommons.org/licenses/by/4.0
Web-Based Cashier Information System at Boo-Boo Petshop
Boo-boo Petshop is a business engaged in the sale of pet products located in Tembilahan. In its operational activities, Boo-boo Petshop still uses manual methods for recording transactions, managing stock items, and financial reporting. These manual methods often cause problems such as the risk of data loss, recording errors, reporting delays, and difficulties in decision-making. To address these issues, this study aims to design and develop a web-based cashier information system that can be used to manage sales transactions, stock inventory, and reporting automatically and in a computerized manner. The system development method used is the Waterfall model, which consists of five stages: planning, analysis, design, implementation, and testing. The PIECES approach is applied to analyze problems from various aspects of the system. The test results showed a score of 87.0%, which falls into the "very good" category, indicating that the system functions well, increases the speed of transaction recording, reduces errors, and provides accurate data that can be accessed in real-time. This application improves work efficiency, reduces recording errors, and allows business owners to monitor store operations in real-time from anywhere.
Copyright (c) 2025 rendi rendi supriadi (Author) https://creativecommons.org/licenses/by/4.0
Comparison of K-Nearest Neighbor and Naïve Bayes Classification Methods for Coconut Maturity Data
Classification of coconut maturity level is an important aspect in the coconut industry to ensure product quality and optimal selling value. This study aims to compare the performance of two data mining classification methods, namely K-Nearest Neighbors (KNN) and Naïve Bayes, in classifying coconut maturity levels in Tembilahan, Indragiri Hilir Regency. The dataset used consists of 300 data with parameters such as skin color, fruit weight, diameter, and fruit texture condition. Evaluation was conducted using accuracy, precision, recall, F1-score, and Cohen's Kappa metrics with 80:20 data division for training and testing. The results showed that the Naïve Bayes method provided superior performance with an accuracy of 86.67% and a Cohen's Kappa value of 0.795 compared to KNN which only achieved an accuracy of 43.33% and a Cohen's Kappa value of 0.144. Naïve Bayes also showed better consistency in classifying the three categories of coconut maturity (young, semi-old, and old) with an average F1-score of 0.8455 versus 0.4119 for KNN. This study provides a recommendation that the Naïve Bayes method is more effective for coconut maturity classification, especially in data conditions that are not fully optimized in terms of preprocessing.
Copyright (c) 2025 M. Dhanul Paridzhi, Dwi Yuli Prasetyo, samsudin (Author) https://creativecommons.org/licenses/by/4.0
Comparative Analysis of Data Encryption using the Bcrypt Algorithm and the MD5 Algorithm
Information system security is important to protect system user data. One form of information system security implementation is to encrypt data using hashing techniques. The bcrypt algorithm and the MD5 algorithm are hashing techniques that are often used to encrypt data. Both of these algorithms aim to hash data, although they have the same purpose, the characteristics of these two algorithms are different. This study aims to analyze the comparison of hashing techniques using the MD5 algorithm with the bcrypt algorithm in encrypting data. This study uses a qualitative approach with literature study research methods and experiments by conducting direct testing of the bcrypt and MD5 algorithms in the data encryption process using the PHP programming language. The results show that the bcrypt algorithm will produce different hashing values even though the hashed data is the same data with a constant hashing value length of 60 characters and consists of a random combination of symbols, letters and numbers. Meanwhile, the MD5 algorithm will produce the same hashing value with the same hash data with a constant hashing value length of 32 characters and consists of a random combination of letters and numbers.
Copyright (c) 2025 Gema Maulana, Habib Al Huda (Author) https://creativecommons.org/licenses/by/4.0
Designing a Inventory Application System Using the Waterfall Development Method
The development of information technology drives the need for information systems that can effectively and efficiently manage inventory data. The inventory information system is designed to facilitate the processes of recording, managing, and reporting the stock of goods stored in warehouses and stores. Given the numerous types of goods and transactions involving the movement of goods, a web-based system is required to handle data centrally and in real-time. This research uses the Waterfall method because it has a structured phase, starting from needs analysis, system design, implementation, testing, to maintenance. The results of the implementation show that the system can improve the efficiency of record-keeping and reduce the risk of data loss due to human error. With this system, the inventory management process becomes faster, more accurate, and easily accessible by various parties.
Copyright (c) 2025 Rizki nur alfiansyah, Ananda aulia rahman, Rizky (Author) https://creativecommons.org/licenses/by/4.0
Product Sales Information System at NGO Widya Erti Indonesia (WEI)
Advances in information technology offer significant opportunities for MSMEs to increase efficiency and expand their marketing efforts. KWT Cinta, under the auspices of the NGO Widya Erti Indonesia, is an MSME that produces chocolate banana chips and coconut chips. Currently, promotions are still conducted conventionally, and a structured sales recording and financial management system is lacking. This research aims to design and implement a web-based sales information system to support promotions, sales recording, and financial management efficiently and effectively. Development was conducted using prototyping and PIECES analysis methods. The system is equipped with promotional animation features and tested using functionality and usability testing. The results showed that all features performed according to specifications, with a usability score of 87.32% (categorized as "very good"). This system increases promotional appeal, recording efficiency, and market expansion, and has the potential to become a digitalization solution for other women's farming groups.
Copyright (c) 2025 Putri (Author) https://creativecommons.org/licenses/by/4.0
Medical Record Information System at UPT Puskesmas Kotabaru Seberida
The development of information technology has had a significant impact on various sectors, including the health sector. One of the main challenges at the UPT Puskesmas Kotabaru Seberida is the use of a manual recording system for the management of medical record data and drug registration. This leads to service delays, the risk of data loss, and low operational efficiency. This research aims to design and build a medical record information system to overcome these problems. The methodology used in the development of the system is the Waterfall model, with system analysis using the PIECES (Performance, Information, Economics, Control, Efficiency, Service) approach. The system design was carried out using the Unified Modeling Language (UML), while the implementation used the PHP programming language and MySQL database. The system is tested through functionality testing and usability testing. The test results show that all system functions are running as needed with a functionality feasibility rate of 100%, and a user satisfaction level (usability) of 90.25%, which is very good. Thus, this information system is able to increase the effectiveness and efficiency of health services in the Puskesmas environment and minimize errors in recording patient data and drug management.
Copyright (c) 2025 Nuraini, Fitri Yunita (Author) https://creativecommons.org/licenses/by/4.0
Implementation of a Web-Based Information Service System for Land and Building Transactions in Indragiri Hilir Regency
The demand for efficient and accessible digital systems in the property sector continues to grow, especially in regions with geographical challenges such as Indragiri Hilir Regency. This study aims to design and implement a web-based marketplace system that provides interactive and verified information services for land and building transactions. The system was developed using the Waterfall method and evaluated through the PIECES framework. Data collection involved observation, interviews, and a usability questionnaire distributed to 115 respondents. The results showed a 100% success rate in functionality and a usability score of 82.68%, categorized as very good. Key features such as Google Maps-based location visualization and direct WhatsApp communication proved effective in improving access and user interaction. Based on these findings, future system development is recommended to include legal property verification and user data protection features to enhance trust and security on a broader scale.
Copyright (c) 2025 muhammad akbar, Ilyas (Author) https://creativecommons.org/licenses/by/4.0
Management Information System at the Inhil Perfume Shop Tembilahan
Inhil Perfume Tembilahan Shop Inhil Perfume Tembilahan Shop is a micro-business selling perfume products that still manages sales transactions, attendance, and employee payroll manually. This situation results in late reporting, recording errors, and low efficiency and accuracy in operational data management. This research aims to design and build an integrated web-based management information system to simplify the automated management of sales transactions, attendance, and employee payroll at Inhil Perfume Tembilahan Shop. The system development method uses the Waterfall model within the SDLC approach, with the aid of UML modeling tools. Data was obtained through observation, interviews with the shop owner, and literature review. The system was tested using black box and usability testing methods. The system was developed using the PHP programming language and a MySQL database. Implementation results indicate that the system is able to improve data management efficiency and minimize errors. It achieved a usability rating of 90.27% from 15 respondents, categorized as "very good." Based on these results, the system is recommended for full implementation as a practical solution to support managerial decision-making and improve operational services at Inhil Perfume Tembilahan Shop.
Copyright (c) 2025 Kasma Wati (Author) https://creativecommons.org/licenses/by/4.0
Design of New Student Admission Information System at SMPN 3 Tembilahan Hulu
This study designed a web-based New Student Admissions (PPDB) information system for SMPN 3 Tembilahan Hulu. The previous manual system resulted in long queues, vulnerable file management, and limited access to information. The main objective was to develop a web system that was efficient, easy to use, increased accessibility for prospective students, and transparency of zoning selection. The Waterfall method was used in the development, including problem identification, data collection (observation, interviews, literature review), PIECES analysis, UML design, implementation, and testing. The analysis revealed weaknesses in the manual system in accuracy, relevance, timeliness, cost efficiency, and data control. The designed web-based system provides account registration, online forms, file uploads, status checks, and results announcements, as well as an admin interface for data management. The implementation successfully built a web application according to the design. Usability testing with 36 respondents achieved 87.67% feasibility, indicating the system is highly feasible. This system is expected to increase process efficiency, support zoning policies, minimize errors, facilitate access, and support PPDB transparency.
Copyright (c) 2025 Novi Indriyani, Abdul Muni (Author) https://creativecommons.org/licenses/by/4.0
Web Based School Financial Information System at MA Al-Azkiya Pengalihan Keritang
In today's technological era, financial information systems are needed by institutions/companies such as MA Al-Azkiya in Pengalihan Keritang. Currently, MA Al-Azkiya still relies on manual data recording and deposit transactions, so a digital system will be very helpful. The purpose of this study is to facilitate school officials and students in financial reporting and online transactions. With this, researchers built a school financial information system using a research framework consisting of 2 phases, namely the initial phase and the system development phase, the initial phase by identifying problems, collecting data consisting of observations, interviews and literature studies, for the system development phase using the Software Development Life Cycle (SDLC) development method with waterfall modeling that guides the design of the system built using stages such as waterfalls from needs analysis using PIECES analysis techniques to the implementation and testing stages. The results of the study are building a school financial information system with access to 2 actors, namely admin and students, testing is done using functionality and usability. The functional test scores for all those tested directly by the Al-Azkiya MA admin were successful, and the usability test for distributing questionnaires with a feasibility percentage score of 88.54% can be declared very good. It can be concluded that the system built with additional features, namely the online payment verification feature, is very helpful for admins and students both in terms of transactions and data collection.
Copyright (c) 2025 Salmiati, Usman (Author) https://creativecommons.org/licenses/by/4.0
SWOT Analys of BengkelCloudApp Application in Micro Scale Workshop Transaktion Management
Digitalization in the micro business sector, especially motorcycle repair shops, is an urgent need to improve operational efficiency. The BengkelCloudApp is designed as a web-based technology solution to assist the process of recording transactions at micro-scale workshops, such as Bengkel Motor Andi. This article discusses the SWOT (Strengths, Weaknesses, Opportunities, Threats) analysis of the application. The analysis shows that the application has a positive impact on the efficiency of transaction management and data archiving. However, there are still some challenges in technology adoption, especially related to user training and dependence on internet connection. This study is expected to serve as a basis for the development of similar information systems in the MSME sector
Copyright (c) 2025 Shofi Amanda, Novi Fitria Zulina Putri , Leni Marlina , M Akbar Aldian Simanjuntak (Author) https://creativecommons.org/licenses/by/4.0
Implementation of Cake Sales Website with Google Sheet Database (Study Case : Classikeik Shop)
The Classikeik store previously conducted sales manually through a pre-order system using direct messages (DM) on Instagram and WhatsApp chat. The system caused problems in recording and managing transaction data due to the relatively high volume of orders. This research aims to overcome these problems through the development of a cake buying and selling website that is directly integrated with Google Sheets as a database. The research method used is implementative with a descriptive approach, utilizing HTML, CSS, JavaScript, and Google Apps Script technologies. The website is integrated with Google Sheets through two main worksheets, namely the “Products” worksheet, which automatically updates product information on the website page, and the “Orders” worksheet, which real-time stores every order that comes through the website. The implementation results show that this system improves time efficiency in order processing, speeds up customer service, significantly increases the number of orders, and provides convenience in managing transaction data automatically. Thus, the use of website integration and Google Sheets has proven effective in digitizing the operations of small-scale culinary businesses such as Toko Classikeik.
Copyright (c) 2025 Ahmad Azhar, Muhammad Afrizal (Author) https://creativecommons.org/licenses/by/4.0
SWOT Analysis of the Use of a POS Application for Sales Transaction Recording at RZ Kids Store Tembilahan
RZ Kids Store Tembilahan is a micro enterprise in the children's clothing sector, still relying on manual transaction recording. This causes problems such as errors, limited oversight, and inefficiency. This study aims to evaluate the store’s readiness to implement a digital cashier application (Point of Sale/POS) as a modern solution to replace the manual system. The research uses SWOT analysis to identify the strengths, weaknesses, opportunities, and threats of adopting the POS system in RZ Kids Store. The results show that the application has the potential to improve operational efficiency, reduce recording errors, facilitate inventory management, and support faster and more accurate sales reporting. However, challenges such as implementation costs and staff training need to be considered. Overall, adopting a digital cashier system is a strategic step to enhance the competitiveness of micro businesses like RZ Kids Store.
Copyright (c) 2025 dila rusti, fanisha juliananda putri, efa sa'adah, yuliati, cici nurmalayuni (Author) https://creativecommons.org/licenses/by/4.0
Design of a Website-Based Online Registration System at State Middle School 04 Kemuning
The process of registering new students at SMP NEGERI 4 KEMUNING is still done manually by filling out the registration form directly at the location, so it often causes long queues, inefficient document archiving, and errors in data recording. This study aims to design and build an online registration information system that can facilitate the administrative process of new student admissions at SMP NEGERI 04 KEMUNING, while improving the quality of service and work efficiency of school staff. the research method used is the waterfall model in the process of designing the system using the css, Java, python,html programming languages. The results of the design show that the system is able to handle the registration process starting from inputting prospective student data, uploading required files to verification by the school. It is hoped that with this system the registration process at SMP Negeri 04 Kemuning will be easier, faster, and more organised.
Copyright (c) 2025 Nur Ainah, Dewi Nawangsari, Siti Nursehati, Elvi Suciati (Author) https://creativecommons.org/licenses/by/4.0
Evaluation of User Satisfaction with the COD-Check First Payment System on the Shopee Application using the System Usability Scale (SUS) Method
The development of e-commerce in Indonesia has encouraged various innovations in the payment system, one of which is the COD-Cek Dulu feature introduced by Shopee to increase consumer trust and convenience when shopping online. However, the success of this feature needs to be evaluated in terms of user satisfaction to assess the extent to which the feature is effective and well received. This study aims to evaluate the level of user satisfaction with the COD-Cek Dulu payment system on the Shopee application using the System Usability Scale (SUS) method. The research method used is quantitative descriptive with a survey approach using the SUS questionnaire to 100 students of Indragiri Islamic University who have used the feature. Data processing is carried out through validity and reliability tests, as well as calculating the SUS score to measure the usability of the system. The results of the study show that the COD-Cek Dulu feature obtained a SUS score of 75 which is included in the "Acceptable" category with a grade of "C" and a good level of usability, reflecting a high level of user satisfaction. In conclusion, the COD-Cek Dulu payment system is considered effective and worthy of being maintained as one of Shopee's innovations, and contributes positively to the user shopping experience on the e-commerce platform
Copyright (c) 2025 Nurjannah, Abdullah Husin (Author) https://creativecommons.org/licenses/by/4.0