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2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)最新文献

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Simple Spectrometer for Education Using Microcontroller 基于单片机的简易教育光谱仪
Kann Yingprayoon, Sansiri Tanachutiwat
A simple spectrometer is constructed using Light Emitting Diodes of different colors as sources for this spectrometer. In order to calibrate the light sources, different types of LEDs are connected to the circuit of constant voltage to give lights of different colors. The colors of these LEDs are Blue, Green, Yellow, Orange and red with different wavelengths. The emission spectra of all LEDs were obtained from commercial standard companies to give the peak wavelengths of each LED, 400nm (Violet), 470nm (Blue), 525nm (Green), 574nm (Yellow), 590nm (Orange), 610nm (Orange), 625nm (Red), 700nm (Dark Red) respectively. These peak wavelengths are used as reference light sources for this spectrometer. The results of Absorption spectrum measurement show similar spectrum from standard measurement. Raspberry Pi microcontroller was used in this study to measure, to analyze data and display the absorption spectrum. This low-cost spectrometer is good enough for education which can be used in the normal schools or educational institutions using LEDs of several standard peak wavelengths.
用不同颜色的发光二极管作为光源,构造了一个简单的光谱仪。为了校准光源,将不同类型的led连接到恒压电路上,发出不同颜色的光。这些led的颜色有蓝色、绿色、黄色、橙色和红色,波长不同。所有LED的发射光谱均从商业标准公司获得,以给出每个LED的峰值波长,分别为400nm(紫色),470nm(蓝色),525nm(绿色),574nm(黄色),590nm(橙色),610nm(橙色),625nm(红色),700nm(暗红色)。这些峰值波长用作该光谱仪的参考光源。吸收光谱测量结果与标准测量结果相似。本研究使用树莓派微控制器来测量、分析数据和显示吸收光谱。这种低成本的分光计可以在普通学校或教育机构中使用,使用几个标准峰值波长的led。
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引用次数: 1
Statistical Approach for Text and Non-text Classifier in Off-line Handwritten Document 离线手写文档中文本和非文本分类器的统计方法
B. Pravalpruk, S. Watcharabutsarakham
Hand writing and hand drawing are natural ways to take note. A pen and papers are used to make a note for a long time. In digital era, the notes are often converted into a durable and formal format for further use. Therefore, the conversion application was developed in many fields with many skill such as handwritten recognition, object recognition, object classification, and others. In this paper, we demonstrate a method to classify connected components as flowchart and text. We use the Online Handwritten Flowchart Dataset (OHFD) which contained 419 handwritten flowcharts to benchmark our methodology. The result shown our classification technique get F1-score 77.6%.
手写和手绘是自然的记录方式。笔和纸是用来长时间记笔记的。在数字时代,笔记通常被转换成耐用和正式的格式以供进一步使用。因此,在手写体识别、对象识别、对象分类等多个领域开发了转换应用程序。在本文中,我们展示了一种将连接组件分类为流程图和文本的方法。我们使用包含419个手写流程图的在线手写流程图数据集(OHFD)来测试我们的方法。结果表明,我们的分类技术达到了f1 - 77.6%。
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引用次数: 1
Maximized Output Power Design of Switch-Mode Power Amplifier with Thevenin Impedance 具有Thevenin阻抗的开关模式功率放大器的最大输出功率设计
Prateep Manasummakij, Chatrpol Pakasiri
This paper presents a class-E power amplifier circuit designed using Thevenin impedance. The aim of the method is to maximize the output power of the circuit. The measured results showed that the proposed method yielded output power of 24.33 dBm comparing to 24.99 dBm of the simulated one.
本文提出了一种利用特文宁阻抗设计的e类功率放大电路。该方法的目的是使电路的输出功率最大化。测量结果表明,该方法的输出功率为24.33 dBm,而模拟方法的输出功率为24.99 dBm。
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引用次数: 1
Self Adaptive Learning – Great Deluge Based Hyper-heuristics for Solving Cross Optimization Problem Domains 自适应学习-基于大洪水的超启发式求解交叉优化问题域
Widya Saputra, A. Muklason, Baiq Z.H. Rozaliya
In the literature, almost all optimization problems in NP-hard class are solved by meta-heuristics approach. However, this approach has the drawback of requiring tuning parameters for each different problem domain and different instances of the same problem. This approach is considered less effective in resolving these problems. Therefore, a new approach is needed, namely the hyper-heuristics approach that is able to solve cross-domain problems. Hyper-heuristic is one of the approximate search methods which is able to provide solutions to NP-hard problems in polynomial time, as well as giving fairly good and acceptable results. This method has two properties of search space, namely the selection of LLH and the acceptance of solutions (move acceptance). This approach works in barrier domains rather than directly working in problem domains. With these properties, hyper-heuristic is able to solve problems in different domains. In addition, hyper-heuristics has a learning mechanism through feedback from previously generated solutions. This final project tries to apply a hyperheuristic algorithm in six combinatorial optimization problem domains, namely SAT, Bin Packing, Flow Shop, Personnel Scheduling, TSP, and VRP. The method that will be used in this final project is Self Adaptive - Great Deluge (SAD-GED). The Self Adaptive mechanism is used to make LLH selection to be used, while the Great Deluge is used in determining the acceptance of solutions (move acceptance) in a hyperheuristic framework. The application of the SAD-GED algorithm is expected to be able to provide better results than the existing algorithm used previously, namely Simple Random - Simulated Annealing.
在文献中,几乎所有NP-hard类的优化问题都是用元启发式方法解决的。然而,这种方法的缺点是需要为每个不同的问题域和同一问题的不同实例调优参数。人们认为这种方法在解决这些问题方面效果较差。因此,需要一种新的方法,即能够解决跨领域问题的超启发式方法。超启发式是一种近似搜索方法,它能够在多项式时间内解决np困难问题,并给出相当好的和可接受的结果。该方法具有搜索空间的两个性质,即LLH的选择和解的接受(移动接受)。这种方法适用于障碍领域,而不是直接适用于问题领域。有了这些特性,超启发式能够解决不同领域的问题。此外,超启发式还具有通过先前生成的解决方案的反馈来学习的机制。这个最终的项目尝试在六个组合优化问题领域中应用超启发式算法,即SAT, Bin Packing, Flow Shop, Personnel Scheduling, TSP和VRP。在这个期末项目中使用的方法是自适应-大洪水(SAD-GED)。在超启发式框架中,自适应机制用于做出LLH选择,而大洪水机制用于确定解决方案的接受度(移动接受度)。应用SAD-GED算法有望提供比之前使用的简单随机模拟退火算法更好的结果。
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引用次数: 0
Empowered PG in Forex Trading 授权PG在外汇交易
A. Suchaimanacharoen, T. Kasetkasem, S. Marukatat, I. Kumazawa, P. Chavalit
With the assumption that capital markets follow the semi-strong form of efficient market hypothesis (EMH), numerous efforts have been taken to defeat the non-stationary financial market, ranging from time series analysis, artificial intelligence for prices prediction, to automated decision making by reinforcement learning. This experiment integrated the power of time series forecasting of neural network with the competence of actions selecting of the reinforcement learning. CNN was trained first to predict future prices, and then it fed the output to the policy gradient (PG) model together with historical data to empower the trading decisions. The experiment was conducted on 30 minutes interval of EUR/USD pair in Forex between 2014 and 2018. Our experimental results showed that our model can achieve higher return in both train and validate samples than buy and hold strategy.
假设资本市场遵循有效市场假说(EMH)的半强形式,已经采取了许多努力来击败非平稳金融市场,从时间序列分析,价格预测的人工智能到通过强化学习的自动决策。本实验将神经网络的时间序列预测能力与强化学习的动作选择能力相结合。CNN首先被训练来预测未来的价格,然后它将输出与历史数据一起输入到政策梯度(PG)模型中,以授权交易决策。实验以2014年至2018年欧元/美元对的30分钟间隔进行。实验结果表明,我们的模型在训练样本和验证样本上都比买入并持有策略获得更高的回报。
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引用次数: 2
Enhancing CNN Based Knowledge Graph Embedding Algorithms Using Auxiliary Vectors: A Case Study of Wordnet Knowledge Graph 利用辅助向量增强基于CNN的知识图嵌入算法——以Wordnet知识图为例
Chanathip Pornprasit, Pattararat Kiattipadungkul, Peeranut Duangkaew, Suppawong Tuarob, Thanapon Noraset
Knowledge graphs (KGs) have been utilized by various business fields. One example is Google that stores data in knowledge graphs for searching and retrieval tasks. Even though these graphs have reached an impressive size, they are far from completeness. Missing relations in knowledge graphs is a severe problem for algorithms that operate over knowledge graphs. There are many researchers trying to develop knowledge graph embedding methods so that they can handle different types of relations. ConvKB is one of the knowledge graph embedding methods that utilize convolution neural networks (CNN). However, this method lacks the ability to handle symmetric relations. Being inspired by this limitation, we would like to enhance this method by proposing ConvKB+, which is obtained by modifying ConvKB’s CNN structure and introducing an additional relation vector. Our experiment results show that our method outperforms ConvKB by achieving higher MRR on some symmetric relations of the WN18RR dataset.
知识图谱(Knowledge graphs, KGs)已广泛应用于各个商业领域。谷歌就是一个例子,它将数据存储在知识图中,用于搜索和检索任务。尽管这些图已经达到了令人印象深刻的大小,但它们还远远不够完整。知识图中关系缺失是知识图算法面临的一个严重问题。许多研究者试图开发知识图嵌入方法,以处理不同类型的关系。ConvKB是一种利用卷积神经网络(CNN)的知识图嵌入方法。但是,这种方法缺乏处理对称关系的能力。受到这一限制的启发,我们想通过提出ConvKB+来增强该方法,该方法是通过修改ConvKB的CNN结构并引入额外的关系向量来获得的。实验结果表明,我们的方法在WN18RR数据集的一些对称关系上获得了更高的MRR,优于ConvKB。
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引用次数: 0
ECTI-CON 2020 Cover Page ec - con 2020封面
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引用次数: 0
Application of Association Rule Mining with Concept-Effect Relationship Model for Learning Diagnosis 概念-效果关系模型关联规则挖掘在学习诊断中的应用
Sudarat Saengkeaw
The traditional concept-effect relationship model (CER model) aims at finding the student’s suggestion to improve personalized learning outcomes. To provide more benefits to the instructor, we apply association rule mining to searching for interesting relationships among all students’ in- class testing scores. This approach enhances instructors to better understand student learning performance and improve the instructor’s course design. The experimental results on a computer data mining course have demonstrated feasibility of the approach and the mining results provide feedback for supporting instructors in the form of strong association rules, which is found to be very useful in practical applications.
传统的概念-效果关系模型(CER模型)旨在发现学生的建议,以提高个性化的学习成果。为了给教师提供更多的好处,我们应用关联规则挖掘在所有学生的课堂测试成绩之间寻找有趣的关系。这种方法有助于教师更好地了解学生的学习表现,并改进教师的课程设计。计算机数据挖掘课程的实验结果证明了该方法的可行性,挖掘结果以强关联规则的形式反馈给辅助教师,在实际应用中非常有用。
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引用次数: 1
A Report on Human Head Exposure to a 2.6 GHz Mid-Band of 5G by Using FDTD Method 基于时域有限差分法的5G 2.6 GHz中频人体头部暴露研究
T. Jariyanorawiss, Wachira Chongburee
This paper presents a simulation result of human head exposure to 2.6 GHz, which is one of the bands used in the recently launched 5G mobile networks. The method adopted in the simulation is Finite-Difference Time-Domain (FDTD), which divides the computational domains into a physical and an artificial absorbing domains. The physical domain consists of a dipole antenna representing the mobile phone and a human head model created by a set of 53 layers from Magnetic Resonance Imaging (MRI). The artificial absorbing domain is a 3-D reflectionless boundary which can be implemented by using Perfectly Matched Layers (PML). Also, the Specific Absorption Rate (SAR) value is averaged over 1 gram of the head tissues when the dipole is placed in the range of 1-10 cm from the human head. Additionally, the total power absorption computed from the electric field is also reported. The results suggest that as the distance between the mobile phone set and the human head increases, SAR decreases monotonically and exponentially. Meanwhile, with operating frequency 2.6 GHz, the power absorption tends to decrease but possibly increases at some particular distance. The key result is that for a radiated power of 0.6 W, none of the distances under test deliver SAR value that meet the 1.6 W/kg of the FCC standard. The simulation results conclude that the radiated power of approximately 0.25 W assures the compliance with the FCC standard at the distance of 1 cm.
本文给出了人类头部暴露在2.6 GHz频段的模拟结果,2.6 GHz是最近推出的5G移动网络中使用的频段之一。仿真采用时域有限差分法(FDTD),将计算域分为物理吸收域和人工吸收域。物理领域包括一个代表手机的偶极天线和一个由53层磁共振成像(MRI)创建的人头模型。人工吸收域是一个三维无反射边界,可以用完全匹配层(PML)来实现。此外,当偶极子放置在距离人类头部1-10厘米的范围内时,比吸收率(SAR)值在1克头部组织上的平均值。此外,还报道了由电场计算得到的总功率吸收。结果表明,随着手机与头部距离的增加,SAR呈单调指数递减。同时,当工作频率为2.6 GHz时,功率吸收有减小的趋势,但在一定距离上有增大的可能。关键的结果是,对于0.6 W的辐射功率,测试中的距离都没有达到FCC标准的1.6 W/kg的SAR值。仿真结果表明,约0.25 W的辐射功率可以保证在1cm距离上符合FCC标准。
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引用次数: 1
Neural Network for Forecasting High Price and Low Price on Foreign Exchange Market 基于神经网络的外汇市场高价和低价预测
Krin Chinprasatsak, N. Niparnan, A. Sudsang
This research compares 4 neural networks from the original researches (I. Backpropagation Neural Network II. Bayesian Regularized Neural Network III. Empirical Mode Decomposition Stochastic Time Strength Neural Network IV. Random Data-time Effective Radial Basis Function Neural Network) and 2 proposed neural networks (I. Empirical Mode Decomposition Random Data-time Effective Radial Basis Function Neural Network II. Empirical Mode Decomposition Random Data-time Effective Bayesian Regularized Neural Network) for predicting the exchange rate of EUR/USD currency pairs using input as a technical indicator and evaluating the networks with trading simulations consisting of investment strategies, risk management methods and financial management principles. The experiments show that the proposed neural networks yield higher returns than the original researches.
本研究比较了原始研究的4种神经网络(1 .反向传播神经网络;贝叶斯正则化神经网络III。经验模态分解随机时间强度神经网络IV.随机数据-时间有效径向基函数神经网络)和2个提出的神经网络(I.经验模态分解随机数据-时间有效径向基函数神经网络II.随机数据-时间有效径向基函数神经网络)。经验模式分解随机数据-时间有效贝叶斯正则化神经网络)用于预测欧元/美元货币对的汇率,使用输入作为技术指标,并通过由投资策略,风险管理方法和财务管理原则组成的交易模拟评估网络。实验结果表明,本文提出的神经网络比原来的研究方法获得了更高的收益。
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引用次数: 1
期刊
2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)
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