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2020 3rd International Seminar on Research of Information Technology and Intelligent Systems (ISRITI)最新文献

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Text-Independent Speaker Identification Using PCA-SVM Model 基于PCA-SVM模型的文本无关说话人识别
Muhammad Farin Akhsanta, S. Suyanto
The Speaker identification system is widely applied in various fields to detect the identity of a person by detecting the sound signal energy released by a person and not driven by a particular text. The challenges are how to differentiate the voices characteristic of the speaker, such as intonation style, rhythm, the pattern of pronunciation, accent, and vocabulary. In this paper, a speaker identification system using Principal Component Analysis (PCA) and Support Vector Machine (SVM) is developed. Besides, the Mel Frequency Cepstral Coefficient (MFCC) is used as the feature extraction. The system is then evaluated using unseen noisy utterances with various signal-noise ratio (SNR). The evaluation is performed using a confusion matrix to calculate the accuracy, precision, and recall to determine the relevance of the output results on the system. Experimental results show that the developed system is quite robust. It is capable of identifying speakers with high performance, an accuracy of 88.97%, a precision of 91,87%, and a recall of 94,39%, for a low noise level with SNR of 15dB. The performance slowly decreases as the noise level increases. For a high noise level with SNR of up to 0dB, it is still able to recognize the unseen speakers with an average accuracy of 70.93%, precision of 74.68%, and recall of 83.51%.
说话人识别系统通过检测人自身释放的声音信号能量而不受特定文本的驱动来检测人的身份,被广泛应用于各个领域。挑战在于如何区分说话者的声音特征,如语调风格、节奏、发音模式、口音和词汇。本文提出了一种基于主成分分析(PCA)和支持向量机(SVM)的说话人识别系统。此外,采用Mel频率倒谱系数(MFCC)作为特征提取。然后使用具有不同信噪比(SNR)的看不见的噪声话语对系统进行评估。评估使用混淆矩阵来计算准确度、精密度和召回率,以确定系统上输出结果的相关性。实验结果表明,该系统具有较强的鲁棒性。在15dB信噪比的低噪声条件下,该系统能够高效识别扬声器,准确率为88.97%,精度为91.87%,召回率为94.39%。随着噪声水平的增加,性能逐渐下降。在信噪比高达0dB的高噪声水平下,仍能识别出未见的说话者,平均准确率为70.93%,精密度为74.68%,召回率为83.51%。
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引用次数: 0
Design and Implementation of SVPWM Inverter to Reduce Total Harmonic Distortion (THD) on Three Phase Induction Motor Speed Regulation Using Constant V/F 恒V/F三相异步电动机调速中减小总谐波畸变的SVPWM逆变器的设计与实现
Arif Sudaryanto, E. Purwanto, I. Ferdiansyah, Syechu Dwitya Nugraha, O. Qudsi, M. Rifadil, M. R. Rusli
The electric motor has replaced motor fuel as the main mover of the equipment. One of them is the use of a three-phase induction motor in the industrial sector. Equipment in an industry requires many speed controllers in operation. The induction motor speed can be changed by changing the number of poles, changing the stator voltage, and changing the frequency source. This method has many disadvantages, such as changes in motor dimensions and the occurrence of flux saturation. This paper provides method of controlling the speed of a three-phase induction motor with constant V/f. Speed regulation with constant V/f can prevent saturation flux when changing the input frequency and can maintain maximum motor torque along the speed regulation area. The speed regulation use an inverter Three-phase SVPWM by implementing PI control. The results of using constant V/f control show that motor speed response at 1300 rpm has a rise time of 0.13 second, a settling time of 0.164 second, an overshoot of 0%, and a THD of 19.26%.
电动机已取代电动机燃料成为该设备的主要动力。其中之一是在工业部门使用三相感应电动机。工业设备在运行中需要许多速度控制器。通过改变极数、改变定子电压、改变频率源,可以改变感应电动机的转速。这种方法有许多缺点,如电机尺寸的变化和磁链饱和的发生。本文提出了恒电压/功率三相异步电动机转速控制方法。恒V/f调速可以在改变输入频率时防止磁链饱和,并能保持电机沿调速区域的最大转矩。通过PI控制,采用逆变三相SVPWM进行调速。采用恒V/f控制的结果表明,电机转速响应在1300 rpm时的上升时间为0.13 s,稳定时间为0.164 s,超调量为0%,THD为19.26%。
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引用次数: 3
Quality Assessment of Digital Terrestrial Television Broadcast in Surabaya 泗水数字地面电视广播质量评估
Farah Nur Alfi, M. Anggraeni, Rosiyah Faradisa
Indonesia established Analog Switch-Off (ASO) in 2018 and was not fully implemented. In this study, we assessed the quality of terrestrial digital TV from end-users, which was also complemented by field measurements of CNR, SNR, and BER values. Based on the results of the assessment, shown 59% of respondents still use analog TV. The TV migration process in Indonesia has not been widely known by the public, 78% of respondents are not aware of the ASO condition, and 74% of respondents claim to have never heard of digital terrestrial TV. More than 50% of respondents of terrestrial digital TV users stated that experienced broadcast dropouts and almost 50% experienced broadcast delays. This relates to the results of field measurements based on a technology-centered approach that shows a higher bit error rate than the simulation data, blank spots at two points, and are still points that classified as low signal categories.
印度尼西亚于2018年建立了模拟开关(ASO),但没有完全实施。在本研究中,我们评估了来自终端用户的地面数字电视的质量,并通过现场测量CNR、SNR和BER值进行了补充。根据评估结果显示,59%的受访者仍在使用模拟电视。印度尼西亚的电视迁移过程并没有被公众广泛了解,78%的受访者不知道ASO条件,74%的受访者声称从未听说过数字地面电视。超过50%的地面数字电视用户受访者表示经历过广播中断,近50%的人经历过广播延迟。这与现场测量结果有关,基于以技术为中心的方法,显示比模拟数据更高的误码率,两个点的空白点仍然被归类为低信号类别。
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引用次数: 4
Design and Development of Bit Error Measurement using FPGA for Visible Light Communication 基于FPGA的可见光通信误码测量系统的设计与开发
M. H. Ibrahim, A. Hanifa, S. Pramono, M. E. Sulistyo, I. Iftadi
Bit error rate (BER) is a fundamental performance measurement of data transmission and communication link. BER measures. Incorporating with digital baseband processing in transceiver, BER measurement can be integrated in a field programmable gate array (FPGA). A Cyclone IV E EP4CE115 is implemented as BER tester to measure performance of visible light communication (VLC) link. The flexibility of FPGA allows the proposed BER measurement system design to add features such as pseudo random bit sequence (PRBS) generator, burst error generator and delay control for synchronization. It shows that design capable to measure VLC link up to 2 Mbps due to limitation of VLC analog front end (AFE).
误码率是衡量数据传输和通信链路性能的基本指标。方方面面的措施。结合收发器中的数字基带处理,可以将误码率测量集成到现场可编程门阵列(FPGA)中。采用Cyclone IV E EP4CE115作为误码率测试仪,测量可见光通信(VLC)链路的性能。FPGA的灵活性允许所提出的误码率测量系统设计增加诸如伪随机比特序列(PRBS)发生器、突发错误发生器和同步延迟控制等功能。结果表明,由于VLC模拟前端(AFE)的限制,该设计只能测量高达2mbps的VLC链路。
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引用次数: 2
Multivariate Time Series Forecasting Based Cloud Computing For Consumer Price Index Using Deep Learning Algorithms 基于多元时间序列预测的云计算消费者价格指数深度学习算法
S. Zahara, Sugianto
Multivariate time series forecasting affords an opportunity to forecast future recent trends or possibility incident based on historical observations. Forecasting in economic world becomes global interest particularly for researchers seeking for best accuracy result using several methods. Consumer Price Index is the primary instrument used by central banks to set inflation targets. However, most of previous studies commonly only used univariate factor to forecast Consumer Price Index. Furthermore, mostly model development of forecasting system is done by personal and physical server facing the problem of impractical yet time consuming. Since measuring method of Consumer Price Index commonly is pick an average of the period-to-period price move for the different products, we conducted multivariate Consumer Price Index forecasting based Cloud Computing utilizing 28 types of Surabaya daily food price from 2014 to 2018 using Multilayer Perceptron and Long Short Term Memory (LSTM) of deep learning. Furthermore, we implement architectural variations of the number of neurons, epoch, and hidden layers. The whole development of forecasting system is built in Amazon Web Service (AWS) Cloud. The result indicated the best accuracy value was obtained from the Multilayer Perceptron with 3.380 of RMSE consist of a configuration of 2 hidden layers, 10 neurons of first hidden layer, 10 neurons of second hidden layer also 1000 of epoch.
多变量时间序列预测为基于历史观测预测未来近期趋势或可能发生的事件提供了机会。经济预测已成为全球关注的问题,特别是研究人员寻求使用多种方法获得最准确的结果。消费者价格指数是中央银行设定通胀目标的主要工具。然而,以往的研究大多只采用单变量因素来预测消费者物价指数。此外,预测系统的模型开发大多是由个人和物理服务器完成的,面临着不切实际且耗时的问题。由于消费者价格指数的测量方法通常是选取不同产品的期间价格变动的平均值,我们使用多层感知器和深度学习的长短期记忆(LSTM),利用2014年至2018年泗水28种日常食品价格进行了基于云计算的多元消费者价格指数预测。此外,我们实现了神经元、epoch和隐藏层数量的架构变化。整个预测系统的开发是建立在亚马逊网络服务(AWS)云上的。结果表明,多层感知器的精度最高,RMSE为3.380,包含2个隐藏层,第一隐藏层有10个神经元,第二层隐藏层有10个神经元,epoch为1000。
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引用次数: 2
Features of the Use of Solar Panels at Low Temperatures in the Arctic 在北极低温环境下使用太阳能电池板的特点
A. Lagunov, A. Ladvishchenko
The Arctic attracts the attention of many countries around the world because it is rich in hydrocarbons. To conduct exploration for hydrocarbons, researchers need electricity. Traditionally, diesel or gasoline generators are used to generate electricity in the circumpolar region. Fuel delivery is costly, and environmental pollution occurs during the operation of electric generators. Wind generators and solar power plants can be used as alternative sources of electricity. In adverse conditions in the Arctic, wind turbines quickly fail. This work is devoted to choosing the type of solar cells that can operate efficiently at low temperatures.
北极因富含碳氢化合物而吸引了世界上许多国家的注意。为了勘探碳氢化合物,研究人员需要电力。传统上,柴油或汽油发电机被用来在极地地区发电。燃料输送成本高,发电机运行过程中会产生环境污染。风力发电机和太阳能发电厂可以作为电力的替代来源。在北极的恶劣条件下,风力涡轮机很快就会失效。这项工作致力于选择能够在低温下有效工作的太阳能电池类型。
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引用次数: 0
Benchmarking Explicit Rating Prediction Algorithms for Cosmetic Products 化妆品显式评级预测算法的基准测试
Raditya Nurfadillah, Fariz Darari, Radityo Eko Prasojo, Yasmin Amalia
Recommendation systems have become a staple feature for any e-commerce sites. The ability to predict whether a customer likes an unseen product forms the very foundation of a recommendation system. In this paper, we concern the issue of explicit rating prediction over cosmetic products. Given a dataset of cosmetic product ratings, we analyze the characteristics of the dataset and implement a wide range of algorithms, such as KNN and matrix factorization, to predict such ratings. We evaluate the performance of these algorithms using MAE and RMSE measures, and discuss factors that may contribute to their performance results. Our experiments have shown that the SVD++ technique performs the best among all with an MAE of 0.7699 and an RMSE of 0.9696. We hope that our paper can shed new light on the selection of explicit rating prediction algorithms not only in the domain of beauty products, but also in wider scenarios.
推荐系统已经成为任何电子商务网站的主要功能。预测顾客是否喜欢未见过的产品的能力构成了推荐系统的基础。在本文中,我们关注化妆品的显式评级预测问题。给定化妆品评级数据集,我们分析数据集的特征,并实现广泛的算法,如KNN和矩阵分解,来预测这些评级。我们使用MAE和RMSE度量来评估这些算法的性能,并讨论可能影响其性能结果的因素。我们的实验表明,svd++技术在所有技术中表现最好,MAE为0.7699,RMSE为0.9696。我们希望我们的论文能够为明确评级预测算法的选择提供新的思路,不仅在美容产品领域,而且在更广泛的场景中。
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引用次数: 1
Particle Filter Based Speed Estimator for Speed Sensorless Control in Induction Motor 基于粒子滤波的异步电机无速度传感器控制速度估计
B. L. Widjiantoro, K. Indriawati, Egy Josua Simbolon
In this research, speed sensorless control design for induction motors is done by using the Particle Filter algorithm (PF) as a speed estimator and Direct Torque Control (DTC) as a control scheme used to control the speed of an induction motor. For testing with a close loop control system, the test range is at speeds of 50 to 500 rpm, with a steady state error obtained less than 5%. Based on the value of the error obtained it can be said that the design of the speed sensorless control for the induction motor is running well, however at high speeds such as 350 and 500 rpm the results obtained have a high overshoot value and a long settling time.
在本研究中,采用粒子滤波算法(PF)作为速度估计器,直接转矩控制(DTC)作为控制方案来控制感应电机的速度,完成感应电机无速度传感器控制设计。对于闭环控制系统的测试,测试范围为50至500转/分,稳态误差小于5%。从得到的误差值可以看出,异步电动机无速度传感器控制设计运行良好,但在350和500转等高速下,得到的结果超调值高,稳定时间长。
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引用次数: 3
Implementation of Maximum Power Point Tracking on PV System using Artificial Bee Colony Algorithm 用人工蜂群算法实现光伏系统最大功率点跟踪
Muhammad Rizal Fanani, I. Sudiharto, I. Ferdiansyah
Implementation of Solar thermal energy as a source of renewable electricity is currently being developed. The main problem with photovoltaic systems is the result of power efficiency is low. The maximum power point tracking (MPPT) method can increase the efficiency of photovoltaic output power. This research will use the MPPT method with an artificial bee colony (ABC) algorithm. MPPT design will be simulated using Power Simulation (PSIM) software. Simulation results will be compared with no MPPT and MPPT human psychology optimization (HPO) algorithm. The results show MPPT ABC gets the best average accuracy from the average accuracy without MPPT and MPPT HPO, which is 99.95%. And the MPPT ABC has a response time of MPP tracking faster than MPPT HPO, during irradiation 800 W/m2, 900 W/m2, 1000 W/m2.
目前正在开发太阳能热能作为可再生电力的一种来源。光伏系统的主要问题是电力效率低。最大功率点跟踪(MPPT)方法可以提高光伏输出功率的效率。本研究将采用基于人工蜂群(ABC)算法的MPPT方法。MPPT设计将使用Power Simulation (PSIM)软件进行仿真。仿真结果将与无MPPT和MPPT人类心理优化(HPO)算法进行比较。结果表明,MPPT ABC在无MPPT的平均准确率和MPPT HPO的平均准确率中获得了最好的平均准确率,为99.95%。在辐照800w /m2、900w /m2、1000w /m2时,MPPT ABC的MPP跟踪响应时间比MPPT HPO快。
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引用次数: 3
Classification of Customer Actions on Digital Money Transactions on PaySim Mobile Money Simulator using Probabilistic Neural Network (PNN) Algorithm 基于概率神经网络(PNN)算法的PaySim移动货币模拟器数字货币交易客户行为分类
S. Sa'adah, Melati Suci Pratiwi
Development of technology have influenced all aspect, especially in financial sector in this pandemic situation, where most people tend to use digital money to conduct daily financial transactions. In one side, there is security point that need to be concern much. Like several disadvantages using credit cards by undue owners, social engineering, and transactions to commit fraud. In this paper, PaySim Mobile Money Simulator data is used with a machine learning algorithm called probabilistic neural network (PNN) to classify whether the customer's actions are normal or fraudulent actions. This PNN approach combined using binary classification to prevent fraudulent actions in transactions that have been or are being used by customers. And the result indicated that this system able to classify class 0 (as a normal class customer) and 1 (as a fraudulent class customer). Based on this result, maybe it would help many sectors that involved as a tool to classify a genuine customer. Especially in this pandemic covid-19, the fraud needs to detect often, to mitigate the fraud early.
技术的发展影响了各个方面,特别是在疫情下的金融部门,大多数人倾向于使用数字货币进行日常金融交易。一方面,有安全问题需要多加关注。像一些缺点使用信用卡不正当的所有者,社会工程,和交易进行欺诈。在本文中,PaySim移动货币模拟器数据与一种称为概率神经网络(PNN)的机器学习算法一起使用,以分类客户的行为是正常行为还是欺诈行为。这种PNN方法结合了二元分类,以防止客户已经使用或正在使用的交易中的欺诈行为。结果表明,该系统能够对0类(正常类客户)和1类(欺诈类客户)进行分类。基于这个结果,也许它可以作为一种工具帮助许多相关部门对真正的客户进行分类。特别是在本次covid-19大流行中,需要经常发现欺诈行为,以便及早减轻欺诈行为。
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引用次数: 1
期刊
2020 3rd International Seminar on Research of Information Technology and Intelligent Systems (ISRITI)
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