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Customer Segmentation Based on Loyalty Level Using K-Means and LRFM Feature Selection in Retail Online Store 基于K-Means和LRFM特征选择的零售网店顾客忠诚度细分
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.648
Tiara Lailatul Nikmah, Nur Hazimah Syani Harahap, Gina Cahya Utami, Muhammad Mirza Razzaq
Customer experience is a key component in increasing sales numbers. Customers are important assets that must be kept up for a corporation or firm. Prioritizing customer service is one way to protect client loyalty. To ensure that service priority is right on target, this research was conducted on groups of consumers who are anticipated to have high business prospects. The 2011 retail online shop sales dataset with 379,980 records and eight char-acteristics was used. The length, recency, frequency, and monetary (LRFM) feature selection approach was used in the study process to select features for further segmentation using the K-Means data mining method to define consumer types. Following the completion of the research, clients were divided into four categories: Premium Loyalty, Inertia Loyalty, Latent Loyalty, and No Loyalty. The correct clustering results are displayed in the vali-dation test using the Silhouette Score Index technique, which yielded a score value of 0.943898. Based on the outcomes of this segmentation, business actors may prioritize providing clients with the proper service.
客户体验是增加销售数量的关键组成部分。客户是公司或公司必须保留的重要资产。优先考虑客户服务是保护客户忠诚度的一种方法。为了确保服务优先级符合目标,本研究针对预期具有较高商业前景的消费者群体进行。使用了2011年零售网店销售数据集,其中有379980条记录和8个特征。在研究过程中,使用长度、最近度、频率和货币(LRFM)特征选择方法,使用K-Means数据挖掘方法选择特征进行进一步分割,以定义消费者类型。研究完成后,客户被分为四类:高级忠诚度、惯性忠诚度、潜在忠诚度和无忠诚度。正确的聚类结果在使用Silhouette Score Index技术的验证测试中显示,该技术的得分值为0.943898。根据这种细分的结果,业务参与者可以优先为客户提供适当的服务。
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引用次数: 0
Signature Identification using Digital Image Processing and Machine Learning Methods 基于数字图像处理和机器学习方法的签名识别
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.618
I. K. N. Putra, Ni Putu Dita Ariani Sukma Dewi, Diah Ayu Pusparani, Dibi Ngabe Mupu
Signature is used to legally approve an agreement, treaty, and state administrative activities. Identification of the signature is required to ensure ownership of a signature and to prevent things like forgery from happening to the owner of the signature. In this study, data signatures were obtained from 25 people over the age of 50. The signers provided 20 signatures and were free to choose the stationery used to write the signature on white paper. The total data obtained in this study was 500 signature data. The obtained signature was scanned to create a signature image, which was then pre-processed to prepare it for feature extraction, which can characterize the signature images. The HOG method was used to extract features, resulting in a dataset with 4,536 feature vectors for each signature image. To identify the signature image, the classification methods SVM, Decision Tree, Nave Bayes, and K-NN were compared. SVM achieved the highest accuracy, which is 100%. When K=5, the K-NN method achieved a fairly good accuracy of 97.3%. Meanwhile, Naive Bayes and Decision Tree achieved accuracy significantly lower than K-NN (61%). Because the HOG method produced a large feature vector for each signature, it is recommended that important features that represent signatures be optimized or extracted to produce smaller features to speed up computation without sacrificing accuracy, and that the HOG method be compared to other extraction feature methods to obtain a better model in future research.
签名用于合法批准协议、条约和国家行政活动。需要对签名进行识别,以确保签名的所有权,并防止伪造等事情发生在签名所有者身上。在这项研究中,数据签名是从25名50岁以上的人身上获得的。签名者提供了20个签名,可以自由选择在白纸上签名的文具。本研究中获得的总数据为500个特征数据。对获得的签名进行扫描以创建签名图像,然后对其进行预处理,为特征提取做准备,特征提取可以表征签名图像。使用HOG方法提取特征,得到每个特征图像具有4536个特征向量的数据集。为了识别特征图像,比较了SVM、决策树、Nave Bayes和K-NN的分类方法。SVM的准确率最高,达到100%。当K=5时,K-NN方法的准确率为97.3%,Naive Bayes和Decision Tree的准确率明显低于K-NN(61%)。由于HOG方法为每个签名产生了一个大的特征向量,因此建议对代表签名的重要特征进行优化或提取,以产生较小的特征,从而在不牺牲精度的情况下加快计算速度,并将HOG方法与其他提取特征方法进行比较,以在未来的研究中获得更好的模型。
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引用次数: 0
Analysis of Power Generation and Distribution of Hybrid Energy for Electricity Loads in Batakan Village 巴塔干村电力负荷混合能源发电与分配分析
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.767
Ahmad Zaki Ramadhani, M. Facta, S. Handoko
The need for electrical energy continues to increase over time. However, in Indonesia power plants are still dominated by fossil fuel power plants, and there are still many areas without access to electricity. The use of renewable energy is needed to replace fossil fuels considering that fossil fuels can run out one day. The coastal area of Batakan Village in Tanah Laut Regency, South Kalimantan Province, was chosen as the focus location for conducting hybrid power plant simulations because this village is located in a coastal area where wind and solar energy sources are abundant. Batakan Village is approximately 40 km from Pelaihari City. Medium-voltage network transmission system (JTM) is supplied from Pelaihari City, and it is almost certain that this village experiences large power losses over long distance. This power loss will be detrimental if an effort is not made to reduce it. The purpose of this research is first to determine the optimal hybrid power plant configuration design to reduce power loss in the electricity system in Batakan Village. Second, it will analyze the power loss of the hybrid power plant system in Batakan Village, and finally, this research is going to analyze the investment feasibility of the hybrid power plant system in Batakan Village. In this study, the design of renewable energy plants, such as solar power plants (PLTS) with a total capacity of 406.1 kW and wind power plants (PLTB) with a total capacity of 125 kW, and the electricity network (grid system) are used together in a hybrid power generation system. The ETAP software was used to analyze the power losses of the hybrid power generation system, while the HOMER software was used to determine the net present value (NPV) and cost of energy (COE) of the hybrid power generation system. The results show that the configuration of the solar, wind, and grid systems is the most optimal. It is obtained from the results of ETAP simulations that have been carried out during average load and peak load conditions that by including the Solar Power Plant and Wind Power Plant power losses in the electricity system in Batakan Village can be reduced from the previous one using the system configuration only connected to the PLN power grid (grid system only). The total power losses incurred was 269.1 kW of active power and 1613.5 kvar of reactive power at average load reduced to 266.9 kW of active power and 1568.9 kvar of reactive power. At peak load the total power losses were 423.4 kW of active power and 2573.0 kvar of reactive power and they deceased to 41.,5 kW of active power and 2510.5 kvar of reactive power. In terms of investment, the COE value decreased by IDR 111, and the NPC decreased by IDR 6,600,000,000 at the average load. At the peak load COE decreased by IDR 88, while NPC by IDR 7,000,000,000. The return of investment (ROI) value is 13.2%, which indicates that the investment is still in the profitable stage.
随着时间的推移,对电能的需求不断增加。然而,在印度尼西亚,发电厂仍然以化石燃料发电厂为主,仍然有许多地区无法获得电力。考虑到化石燃料总有一天会耗尽,需要使用可再生能源来替代化石燃料。南加里曼丹省Tanah Laut Regency的Batakan村的沿海地区被选为进行混合动力发电厂模拟的重点地点,因为这个村庄位于风能和太阳能资源丰富的沿海地区。巴塔坎村距离佩莱哈里市约40公里。中压网络输电系统(JTM)由Pelaihari市提供,几乎可以肯定的是,这个村庄在远距离上有很大的电力损耗。如果不努力减少这种功率损失,它将是有害的。本研究的目的首先是确定最优的混合电厂配置设计,以减少巴打干村电力系统的功率损耗。其次,分析巴塔干村混合电厂系统的功率损耗,最后,本研究将分析巴塔干村混合电厂系统的投资可行性。在本研究中,可再生能源电厂的设计,如总容量为406.1 kW的太阳能发电厂(PLTS)和总容量为125 kW的风力发电厂(PLTB),与电网(电网系统)一起使用在一个混合发电系统中。采用ETAP软件对混合发电系统的功率损耗进行分析,采用HOMER软件确定混合发电系统的净现值(NPV)和能源成本(COE)。结果表明,太阳能、风能和电网系统的配置是最优的。在平均负荷和峰值负荷条件下进行的ETAP模拟结果表明,在Batakan村的电力系统中加入太阳能发电厂和风力发电厂,使用仅连接PLN电网的系统配置(仅限电网系统)可以减少电力系统的功率损耗。总功率损失由平均负荷269.1 kW有功功率和1613.5 kvar无功功率减少到266.9 kW有功功率和1568.9 kvar无功功率。在峰值负荷时,总功率损耗为423.4 kW有功功率和2573.0 kvar无功功率,两者均下降至41。,有功功率5kw,无功功率2510.5 kvar。在投资方面,平均负荷下COE值减少111印尼盾,NPC减少66亿印尼盾。高峰负荷时,COE下降88印尼盾,NPC下降70亿印尼盾。投资回报率(ROI)值为13.2%,表明该投资仍处于盈利阶段。
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引用次数: 0
The Utilization of Deep Learning in Forecasting The Inflation Rate of Education Costs in Malang 深度学习在马郎市教育成本通胀率预测中的应用
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.729
Ashri Shabrina Afrah, Merinda Lestandy, Juwita P. R. Suwondo
The public needs information about the predicted inflation rate for education costs to manage family finances and prepare education funds. This information is also beneficial for the government to create policies in education. Malang is one of the educational cities in Indonesia, but research on the prediction of the inflation rate of education costs in the city still needs to be made available. Besides, the researchers have yet to find previous studies on forecasting that used the specific inflation rate for education costs in Indonesia by applying the Deep Learning method, especially those using the Consumer Price Index (CPI) data for the Education Expenditure Group. This research aims to develop a model to forecast the inflation of education costs in Malang using the Deep Learning Method. This research was conducted using Consumer Price Index (CPI) data for the Education Expenditure Group in Malang during 1996-2021s taken from the Central Bureau of Statistics (BPS) Malang. The forecasting method used is the Long and Short-Term Memory (LSTM) method, which is a development of the Recurrent Neural Network (RNN). The results showed that it achieved the best accuracy by a model with one hidden layer and four hidden nodes, namely MAPE=2.8765% and RMSE=8.37.
公众需要有关教育成本预测通货膨胀率的信息,以管理家庭财务和准备教育资金。这些信息也有利于政府制定教育政策。马朗是印度尼西亚的教育城市之一,但仍需对该市教育成本通胀率的预测进行研究。此外,研究人员还没有发现以前通过应用深度学习方法使用印尼教育成本的具体通货膨胀率进行预测的研究,特别是那些使用教育支出组的消费者价格指数(CPI)数据的研究。本研究旨在利用深度学习方法开发一个预测马朗教育成本通胀的模型。这项研究使用了来自中央统计局(BPS)马朗的1996-2021年马朗教育支出组的消费者价格指数(CPI)数据。所使用的预测方法是长短期记忆(LSTM)方法,它是递归神经网络(RNN)的发展。结果表明,具有一个隐藏层和四个隐藏节点的模型获得了最佳的精度,即MAPE=2.8765%和RMSE=8.37。
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引用次数: 0
ANALISIS DAN PERBANDINGAN STEGANOGRAFI PADA MEDIA AUDIO DAN GAMBAR MENGGUNAKAN LSB DAN RC4 LSB和RC4提供的音频和GAMBAR媒体隐写术的分析与处理
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.583
Ilham Firman Ashari, Lkhsanudin Raka Siwi, Hafizh Londata, Ihtiandiko Wicaksono
Pada zaman digital saat ini, memberikan keamanan dan kerahasiaan informasi sangat penting ketika melakukan pertukaran informasi melalui jaringan komunikasi. Hal ini bertujuan agar informasi yang dikirimkan oleh pengirim dapat diterima secara utuh oleh penerima tanpa adanya campur tangan pihak ketiga yang tidak berhak atas informasi tersebut. Kriptografi dan Steganografi merupakan teknik yang dapat digunakan untuk mengamankan sebuah pesan rahasia, salah satu jenis metode yang dapat digunakan adalah algoritma RC4 yang digunakan untuk mengamankan pesan asli menjadi pesan rahasia yang acak agar tidak diketahui orang lain. Pada steganografi yang digunakan sebagai media untuk mengamankan pesan antara lain gambar, audio, video, dan dokumen, dimana salah satu metode yang digunakan adalah algoritma least significant bit (LSB). Berdasarkan pengujian yang dilakukan terkait pada penyisipan pesan pada media gambar dan audio didapatkan analisis terkait enkripsi dan dekripsi algoritma rc4. Pengujian aspek imperceptibility, dari histogram gambar dan spektrum audio terlihat tidak ada perbedaaan antara gambar dan audio sebelum dan setelah penyisipan. Pengujian aspek fidelity, dari PSNR dihasilkan rata-rata nilai > 30 dB. Pengujain aspek recovery, menunjukan bahwasanya aspek recovery berhasil 100 % karena tidak ada perbedaan antara pesan asli dan setelah ekstraksi. Pengujian aspek capacity, menunjukkan bahwasanya semakin besar ukuran media penampung maka semakin besar pesan yang bisa disisipkan.
在当今的数字时代,通过通信网络交换信息时,提供信息的安全性和保密性非常重要。这样,发送者发送的信息可以被接收者完全接收,而不会受到无权获得该信息的任何第三方的干扰。密码学和隐写术是可以用来保护秘密消息的技术,其中一种可以使用的方法是RC4算法,该算法用于将原始消息作为随机秘密消息来保护,这样其他人就不会知道了。在隐写术中,用作保护消息以及其他图像、音频、视频和文档的媒体,其中使用的方法之一是最低有效位算法(LSB)。基于在图像和音频媒体中进行的与消息插入相关的测试,获得了与加密相关的分析和rc4算法的描述。从图像直方图和音频频谱来看,插入前后的图像和音频之间没有差异。测试保真度方面,PSNR产生的平均值>30 dB。恢复方面评估器显示恢复方面是100%成功的,因为原始消息和提取后的消息之间没有区别。容量测试表明,支持媒体的大小越大,可以传递的消息就越大。
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引用次数: 0
Smart Rice Box - The Prototype of Organic Rice Storage Anti-Rice Weevil for Food Security during Pandemic 智能米箱——大流行期间粮食安全的有机大米储存防米象鼻虫原型
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.604
Uvi Desi Fatmawati, M. Pratami, Wahyu Hidayat, Kurdianto Kurdianto
The need for organic rice among the people continues to increase in line with the declining level of public health due to the COVID-19 pandemic. Consuming organic rice is one way to maintain body immunity, but organic rice is susceptible to attack by Sitophilus Oryzae L, a type of rice weevil which is the main pest in postharvest commodities. Proper storage of rice is one way to address food security during a pandemic. In this study, a prototype of an anti-rice weevil (Sytophilus Oryzae L) organic rice storage was made using a Raspberry Pi controller and several additional sensors such as a camera sensor and temperature and humidity sensors. UV Hydroponic Lamp and LED Grow Light are used to reduce the growth rate of rice bugs during storage. The results showed that the whole system was running well and the rice bugs on rice were drastically reduced within 36 hours and 18 minutes of storage.
随着新冠肺炎疫情导致的公共卫生水平下降,民众对有机大米的需求持续增加。食用有机大米是保持身体免疫力的一种方法,但有机大米容易受到稻谷象甲(Sitophilus Oryzae L)的攻击,稻谷象甲是收获后商品的主要害虫。妥善储存大米是大流行期间解决粮食安全问题的一种方法。在这项研究中,使用树莓派控制器和几个额外的传感器,如相机传感器和温度和湿度传感器,制作了一个抗水稻象鼻虫(Sytophilus Oryzae L)有机水稻储存的原型。在储存过程中,使用UV水培灯和LED生长灯来降低水稻害虫的生长速度。结果表明,整个系统运行良好,在36小时18分钟的储存时间内,大米上的水稻虫大幅减少。
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引用次数: 0
Open Artificial Intelligence Analysis using ChatGPT Integrated with Telegram Bot 使用ChatGPT与Telegram Bot集成的开放式人工智能分析
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.724
Gisnaya Faridatul Avisyah, Ivandi Julatha Putra, Sidiq Hidayat
Chatbot technology uses natural language processing with artificial intelligence that can interact quickly in answering a question and producing relevant answer. ChatGPT is the latest chatbot platform developed by Open AI which allows users to interact with text-based engines. This platform uses the GPT-3 (Generative Pre-trained Transformer) algorithm to help understand the response humans want and generate relevant responses. Using the platform, users can find answers to their questions quickly and relevantly. The method used for OpenAI's research on ChatGPT integrated through Telegram chatbot is using a waterfall method which utilizes open API tokens from Telegram. In this research we develop OpenAI application connected with telegram bot. This application can help provide a wide range of information, especially information related to the Semarang State Polytechnic. By using Telegram chatbot in the program, users can find it easy to ask because it is integrated with OpenAI using the API. Telegram chatbot, which has a chat feature, allows easy communication between users and chatbots. Thus, it may reduce system errors on the bot.
聊天机器人技术将自然语言处理与人工智能相结合,可以快速回答问题并产生相关答案。ChatGPT是由Open AI开发的最新聊天机器人平台,允许用户与基于文本的引擎进行交互。该平台使用GPT-3(生成预训练变压器)算法来帮助理解人类想要的响应并生成相关响应。使用该平台,用户可以快速和相关地找到问题的答案。OpenAI研究通过Telegram聊天机器人集成的ChatGPT的方法是使用瀑布方法,该方法利用了Telegram的开放API令牌。在本研究中,我们开发了与telegram bot连接的OpenAI应用程序。这个应用程序可以帮助提供广泛的信息,特别是有关三宝垄州立理工学院的信息。通过在程序中使用Telegram聊天机器人,用户可以发现它很容易提问,因为它使用API与OpenAI集成。Telegram聊天机器人具有聊天功能,允许用户和聊天机器人之间轻松交流。因此,它可以减少机器人上的系统错误。
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引用次数: 6
Internet of Things- Based Automatic Feeder and Monitoring of Water Temperature, PH, and Salinity for Litopenaeus Vannamei Shrimp 基于物联网的凡纳滨对虾自动投料及水温、PH和盐度监测
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.658
Falentina Lumban Toruan, M. Galina
Aquaculture of Litopenaeus Vannamei shrimp is one of Indonesia's most crucial commodity export shrimp. Aquaculture feed management and environmental management are essential factors in determining shrimp sustainability. To maximize shrimp farming results, proper feeding, water quality control, and con-tinuous monitoring of three critical parameters: temperature, power of hydrogen (pH), and salinity levels in ponds are required. This study aims to feed the shrimp automatically at predetermined times (07.00, 11.00, 16.00 and 20.00). At the same time, it will monitor pond water quality parameters. Temperature, pH and salinity are all factors monitored. Every 10 minutes, monitored data is stored in ThingSpeak using IoT technology. The design goal has a specific threshold to avoid future problems. A Telegram notification is sent every 10 seconds when the water condition exceeds the threshold. The overall accuracy rate of 98.81%, pH of 96.6%, and salinity of 99.17% demonstrate that the system works correctly.
Vannamei对虾养殖是印尼最重要的出口商品虾之一。水产养殖饲料管理和环境管理是决定对虾可持续性的重要因素。为了最大限度地提高养虾效果,需要适当的饲养、水质控制和连续监测三个关键参数:温度、氢气功率(pH)和池塘盐度。本研究旨在在预定时间(07.00、11.00、16.00和20.00)自动喂虾,同时监测池塘水质参数。温度、pH值和盐度都是监测的因素。每隔10分钟,监控数据就会使用物联网技术存储在ThingSpeak中。设计目标有一个特定的阈值,以避免将来出现问题。当水质超过阈值时,每隔10秒就会发送一次Telegram通知。总准确率为98.81%,pH值为96.6%,盐度为99.17%,表明该系统工作正常。
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引用次数: 0
IoT Frequency Band Channelization in Indonesia as A Recommendation for Machine-To-Machine Communication Preparation in the 5G Era 印尼物联网频带信道化是5G时代机器对机器通信准备的建议
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.621
Lela Nurpulaela, Ridwan Satrio Hadikusumo
This study aims to provide recommendations regarding frequency and channel settings for machine-to-machine (M2M) communication in preparation for the 5G era in Indonesia. In the rapid development of the Internet of Things (IoT), M2M communication is becoming increasingly important to support efficient and reliable connectivity between IoT devices. In this study, we conduct an in-depth analysis of the available frequency spectrum in Indonesia, considering existing regulatory constraints and technical requirements. The results of this study show that the frequency bands 920-925 MHz and 925-928 MHz suit M2M communication in Indonesia with the suggested channel settings. These recommendations are based on spectrum availability, M2M communication needs, and relevant technical requirements. Implementing these recommendations is expected to increase the efficiency and reliability of M2M communications in Indonesia, facilitate the further development of IoT technology, and prepare Indonesia well to face the 5G era. This study contributes to designing a regulatory framework and optimal spectrum use to support successful M2M communications in Indonesia.
本研究旨在为印尼5G时代的到来做准备,为机器对机器(M2M)通信的频率和信道设置提供建议。在物联网(IoT)的快速发展中,M2M通信在支持物联网设备之间高效可靠的连接方面变得越来越重要。在这项研究中,我们对印度尼西亚的可用频谱进行了深入分析,考虑到现有的监管限制和技术要求。这项研究的结果表明,920-925MHz和925-928MHz频带适合印度尼西亚的M2M通信,并具有建议的信道设置。这些建议基于频谱可用性、M2M通信需求和相关技术要求。实施这些建议有望提高印尼M2M通信的效率和可靠性,促进物联网技术的进一步发展,并为印尼迎接5G时代做好准备。这项研究有助于设计监管框架和最佳频谱使用,以支持印尼成功的M2M通信。
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引用次数: 0
A Systematic Literature Review on Blockchain Technology in Software Engineering 软件工程中区块链技术的系统文献综述
Pub Date : 2023-06-30 DOI: 10.31961/eltikom.v7i1.725
Dzhillan Dzhalila, D. Siahaan, Reza Fauzan, Raka Asyrofi, Muhammad Ihsan Karimi
Blockchain technology is gaining increasing interest among software developers as a distributed and decentralized ledger for tracking the origin of digital assets. However, the application of blockchain in software engineering requires further attention. In this study, we aim to address the current challenges and explore the need for specialized blockchain practices in software engineering. Through a systematic literature review, we identify the various applications of blockchain technology in software engineering. Additionally, we conduct a thorough analysis of existing obstacles and propose potential solutions. Gathering and evaluating requirements using blockchain-based requirements engineering approaches will enhance the quality and reliability of data in software development projects. This, in turn, will improve the overall quality and dependability of software, as well as increase user interest and productivity.
区块链技术作为一种分布式和去中心化的分类账,用于跟踪数字资产的起源,正引起软件开发人员越来越多的兴趣。然而,区块链在软件工程中的应用还需要进一步关注。在这项研究中,我们的目标是解决当前的挑战,并探索在软件工程中对专门的区块链实践的需求。通过系统的文献回顾,我们确定了区块链技术在软件工程中的各种应用。此外,我们对现有的障碍进行彻底的分析,并提出潜在的解决方案。使用基于区块链的需求工程方法收集和评估需求将提高软件开发项目中数据的质量和可靠性。反过来,这将提高软件的整体质量和可靠性,以及增加用户的兴趣和生产力。
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引用次数: 0
期刊
Jurnal ELTIKOM Jurnal Teknik Elektro Teknologi Informasi dan Komputer
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