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2017 16th IEEE International Conference on Machine Learning and Applications (ICMLA)最新文献

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A Neural Network Approach to Derive the Horizontal Spaces in Typefaces 基于神经网络的字体水平间距导出方法
Ayantha Randika, M. Wickramasinghe
Typeface spacing is a hard problem. It takes countless hours of manual labour to achieve an aesthetically pleasing font one frequently encounters in digital media. Inter-letter spacing defines the texture and the feel of a typeface and when done accurately yields an aesthetically balanced and an appealing typeface. Nevertheless, setting spacing in a typeface is a tedious and a time consuming task. Hence this paper presents an exploratory study investigating the potential of Neural Networks (NN) to fully automate the typeface spacing process. Even though the NN models investigated in this study yielded up to an accuracy of 47% when compared with typefaces spaced by the type designers, the visual differences were subtle. Thus, we conclude that neural models can indeed be used to model the typeface spacing problem. As one of the first attempts to apply neural models in this particular problem domain, this study lays the foundation to future research and studies.
字体间距是一个难题。人们在数字媒体上经常会遇到一种美观的字体,这需要耗费无数个小时的体力劳动。字母间的间距定义了字体的质感和感觉,如果做到准确,就会产生美学平衡和吸引人的字体。然而,在字体中设置间距是一项冗长而耗时的任务。因此,本文提出了一项探索性研究,探讨神经网络(NN)在完全自动化字体间距过程中的潜力。尽管本研究中研究的神经网络模型与字体设计师设计的字体间距相比,准确率高达47%,但视觉差异是微妙的。因此,我们得出结论,神经模型确实可以用来模拟字体间距问题。作为将神经模型应用于这一特殊问题领域的首次尝试,本研究为今后的研究奠定了基础。
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引用次数: 0
A Learning Framework for Control-Oriented Modeling of Buildings 面向控制的建筑建模学习框架
Javier Rubio-Herrero, V. Chandan, C. Siegel, Abhinav Vishnu, D. Vrabie
Buildings consume almost 40% of energy in the US. In order to optimize the operation of buildings, models that describe the relationship between energy consumption and control knobs such as set-points with high predictive capability are required. Data driven modeling techniques have been investigated to a somewhat limited extent for optimizing the operation and control of buildings. In this context, deep learning techniques such as Recurrent Neural Networks (RNNs) hold promise, empowered by advanced computational capabilities and big data opportunities. This paper investigates the use of deep learning for modeling the power consumption of building heating, ventilation and air-conditioning (HVAC) systems. A preliminary analysis of the performance of the methodology for different architectures is conducted. Results show that the proposed methodology outperforms other data driven modeling techniques significantly.
在美国,建筑消耗了近40%的能源。为了优化建筑的运行,需要描述能耗与设定值等控制旋钮之间关系的模型,该模型具有较高的预测能力。数据驱动建模技术在一定程度上已经被研究用于优化建筑物的操作和控制。在这种情况下,深度学习技术,如循环神经网络(rnn),在先进的计算能力和大数据机会的支持下,前景广阔。本文研究了使用深度学习对建筑供暖、通风和空调(HVAC)系统的功耗进行建模。对该方法在不同体系结构下的性能进行了初步分析。结果表明,该方法明显优于其他数据驱动建模技术。
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引用次数: 9
Application of Decision Trees for Detection of Student Dropout Profiles 决策树在学生辍学档案检测中的应用
R. T. Pereira, Javier Caicedo Zambrano
The results of the research project that aims to identify patterns of student dropout from socioeconomic, academic, disciplinary and institutional data of students from undergraduate programs at the University of Nariño from Pasto city (Colombia), using data mining techniques are presented. Built a data repository with the records of students who were admitted in the period from the first half of 2004 and the second semester of 2006. Three complete cohorts were analyzed with an observation period of six years until 2011. Socioeconomic and academic student dropout profiles were discovered using classification technique based on decision trees. The knowledge generated will support effective decision-making of university staff focused to develop policies and strategies related to student retention programs that are currently set.
该研究项目旨在利用数据挖掘技术,从哥伦比亚帕斯托市Nariño大学本科专业学生的社会经济、学术、学科和机构数据中确定学生退学模式。建立了从2004年上半年到2006年下半年录取的学生的数据存储库。三个完整的队列进行了分析,观察期为6年,直到2011年。使用基于决策树的分类技术发现社会经济和学术学生退学档案。所产生的知识将支持大学工作人员有效的决策,专注于制定与当前设置的学生保留计划相关的政策和战略。
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引用次数: 16
Multidisciplinary Optimization in Decentralized Reinforcement Learning 分散强化学习中的多学科优化
T. Nguyen, S. Mukhopadhyay
Multidisciplinary Optimization (MDO) is one of the most popular techniques in aerospace engineering, where the system is complex and includes the knowledge from multiple fields. However, according to the best of our knowledge, MDO has not been widely applied in decentralized reinforcement learning (RL) due to the ‘unknown’ nature of the RL problems. In this work, we apply the MDO in decentralized RL. In our MDO design, each learning agent uses system identification to closely approximate the environment and tackle the ‘unknown’ nature of the RL. Then, the agents apply the MDO principles to compute the control solution using Monte Carlo and Markov Decision Process techniques. We examined two options of MDO designs: the multidisciplinary feasible and the individual discipline feasible options, which are suitable for multi-agent learning. Our results show that the MDO individual discipline feasible option could successfully learn how to control the system. The MDO approach shows better performance than the completely decentralization and centralization approaches.
多学科优化(MDO)是航空航天工程中最受欢迎的技术之一,其系统复杂,涉及多个领域的知识。然而,据我们所知,由于RL问题的“未知”性质,MDO尚未广泛应用于分散强化学习(RL)。在这项工作中,我们将MDO应用于去中心化强化学习。在我们的MDO设计中,每个学习代理都使用系统识别来接近环境并解决RL的“未知”性质。然后,智能体应用MDO原理,使用蒙特卡罗和马尔可夫决策过程技术计算控制解。我们考察了适合多智能体学习的两种多学科可行方案和单个学科可行方案。我们的研究结果表明,MDO个体学科可行选项可以成功地学习如何控制系统。MDO方法比完全去中心化和集中化方法表现出更好的性能。
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引用次数: 0
Recognition of Acoustic Events Using Masked Conditional Neural Networks 基于掩模条件神经网络的声事件识别
Fady Medhat, D. Chesmore, John A. Robinson
Automatic feature extraction using neural networks has accomplished remarkable success for images, but for sound recognition, these models are usually modified to fit the nature of the multi-dimensional temporal representation of the audio signal in spectrograms. This may not efficiently harness the time-frequency representation of the signal. The ConditionaL Neural Network (CLNN) takes into consideration the interrelation between the temporal frames, and the Masked ConditionaL Neural Network (MCLNN) extends upon the CLNN by forcing a systematic sparseness over the network’s weights using a binary mask. The masking allows the network to learn about frequency bands rather than bins, mimicking a filterbank used in signal transformations such as MFCC. Additionally, the Mask is designed to consider various combinations of features, which automates the feature hand-crafting process. We applied the MCLNN for the Environmental Sound Recognition problem using the Urbansound8k, YorNoise, ESC-10 and ESC-50 datasets. The MCLNN have achieved competitive performance compared to state-of-the-art Convolutional Neural Networks and hand-crafted attempts.
使用神经网络的自动特征提取在图像识别方面取得了显著的成功,但对于声音识别,这些模型通常需要修改以适应频谱图中音频信号的多维时间表征的性质。这可能不能有效地利用信号的时频表示。条件神经网络(CLNN)考虑了时间帧之间的相互关系,而掩码条件神经网络(MCLNN)在CLNN的基础上进行了扩展,通过使用二进制掩码强制网络权重的系统稀疏性。屏蔽允许网络学习频带而不是桶,模仿信号转换中使用的滤波器组,如MFCC。此外,掩模的设计考虑了各种特征的组合,使特征手工制作过程自动化。我们使用Urbansound8k, YorNoise, ESC-10和ESC-50数据集将MCLNN应用于环境声音识别问题。与最先进的卷积神经网络和手工制作的尝试相比,MCLNN已经取得了具有竞争力的性能。
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引用次数: 5
Evolving Adaptive Traffic Signal Controllers for a Real Scenario Using Genetic Programming with an Epigenetic Mechanism 基于遗传规划和表观遗传机制的自适应交通信号控制器
Esteban Ricalde, W. Banzhaf
An important challenge for traffic signal control is adapting to irregular changes in traffic. In recent years, different heuristics have been developed to address this issue. However, most of them are tested in artificial scenarios under controlled circumstances. In this paper, we present the first implementation of Genetic Programming in the evolution of traffic signal controllers for a real-world scenario. The evolved controllers are compared with a static control and an actuated control. The results indicate a significant improvement over traditional methods. Moreover, additional experiments indicate that the evolved controllers have the ability to adapt to unplanned changes in traffic conditions.
适应交通的不规律变化是交通信号控制面临的一个重要挑战。近年来,人们开发了不同的启发式方法来解决这个问题。然而,它们中的大多数都是在受控环境下的人工场景中进行测试的。在本文中,我们提出了遗传规划在交通信号控制器进化中的第一个实现。将改进的控制器与静态控制和驱动控制进行了比较。结果表明,与传统方法相比,该方法有了显著的改进。另外,实验表明,改进后的控制器具有适应交通状况意外变化的能力。
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引用次数: 7
Autoencoder-Enhanced Sum-Product Networks 自编码器增强的和积网络
Aaron W. Dennis, D. Ventura
Sum-product networks (SPNs) are probabilistic models that guarantee exact inference in time linear in the size of the network. We use autoencoders in concert with SPNs to model high-dimensional, high-arity random vectors (e.g., image data). Experiments show that our proposed model, the autoencoder-SPN (AESPN), which combines two SPNs and an autoencoder, produces better samples than an SPN alone. This is true whether we sample all variables, or whether a set of unknown query variables is sampled, given a set of known evidence variables.
和积网络(spn)是一种概率模型,它保证了网络大小在时间线性上的精确推断。我们将自动编码器与spn一起用于高维,高密度随机向量(例如,图像数据)的建模。实验表明,我们提出的自编码器-SPN (AESPN)模型结合了两个SPN和一个自编码器,比单独的SPN产生更好的样本。无论我们对所有变量进行抽样,还是对给定一组已知证据变量的一组未知查询变量进行抽样,都是如此。
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引用次数: 1
Brace Treatment Monitoring Solution for Idiopathic Scoliosis Patients 特发性脊柱侧凸患者支架治疗监测方案
Bhavani Anantapur Bache, Omar Iftikhar, O. Dehzangi
Scoliosis is a medical condition which occurs in adolescents, where an individual’s spine develops curvature. A Thoracolumbosacral orthosis (TLSO) is a type of brace used to control the lateral curvature of the spine in scoliosis. It is a nonsurgical treatment with the goal of preventing curve progression in patients with idiopathic scoliosis. To successfully monitor compliance with brace treatment, we designed and developed a wearable multi-modal sensor solution is embedded into the patient’s brace. The custom designed hardware consists of a sensor board, a force sensor, an accelerometer and a gyroscope. The force sensor collects the force being exerted on the patient’s back, while the accelerometer and gyroscope generate cues to determine the patient’s activities and lifestyle. In this paper, we propose a novel data-mining method to identify patient activities and evaluate the effectiveness of the brace treatment pervasively based on fusion of continuous force and inertial motion recordings. Our aim is to design a context-aware remote monitoring system for ubiquitous evaluation and enhancement of brace treatment compliance of adolescent idiopathic scoliosis patients. We investigated experimental scenario in which, the patient performs a series of pre-defined activities at home during day long segments of brace wear, during pervasive sensor data recordings. The experimental results demonstrated that we achieved an overall accuracy of a 100% for semi-supervised activity detection. The level of tightness of brace-fit reduced gradually over a period of 4 weeks by 33%.
脊柱侧凸是一种发生在青少年的医学病症,个体的脊柱发展为弯曲。胸腰骶矫形器(TLSO)是一种用于控制脊柱侧弯的支撑。这是一种非手术治疗,目的是防止特发性脊柱侧凸患者的弯曲进展。为了成功监测支架治疗的依从性,我们设计并开发了一种可穿戴的多模态传感器解决方案,该解决方案嵌入到患者的支架中。定制设计的硬件包括传感器板、力传感器、加速度计和陀螺仪。力传感器收集施加在病人背部的力,而加速度计和陀螺仪产生线索来确定病人的活动和生活方式。在本文中,我们提出了一种新的数据挖掘方法来识别患者的活动,并基于连续力和惯性运动记录的融合来评估支架治疗的有效性。我们的目的是设计一个情境感知远程监测系统,用于无处不在的评估和提高青少年特发性脊柱侧凸患者支架治疗依从性。我们研究了一个实验场景,在这个场景中,患者在佩戴支具的白天进行一系列预先定义的活动,在无处不在的传感器数据记录期间。实验结果表明,我们对半监督活动检测的总体准确率达到100%。在4周的时间内,支架配合的松紧程度逐渐降低了33%。
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引用次数: 3
Modelling of Fuzzy Logic Controller of a Maximum Power Point Tracker Based on Artificial Neural Network 基于人工神经网络的最大功率跟踪器模糊控制器建模
R. Benkercha, S. Moulahoum, I. Colak
The Grid Connected Photovoltaic System (GCPV) has become more used system in renewable energy. Several researches have been carried out to improve the efficiency and the decrease of energy losses. One of the important components used to increase the efficiency is the DC/DC boost converter. In this paper, a new hybrid model is proposed to control the DC/DC converter, this new controller is built on the fuzzy logic controller (FLC) and artificial neural network (ANN). The pathway taken to build the model is divided into three steps, the first step is to generate a data based on the FLC, the next step is to choose an ANN structure for modeling the FLC and the last step is the test and the validation of the obtained model. The phase of building an ANN is achieved by supervised learning based on back-propagation algorithm. This algorithm is used to train the ANN model by searching of the optimal weights and thresholds that has been a minimal root mean square error between the FLC output and the ANN model. The validation test was performed with various irradiation values between the both intelligent controllers and classical P&O algorithm simultaneously.
并网光伏发电系统(GCPV)已成为可再生能源领域应用较多的系统。为了提高效率和减少能量损失,进行了一些研究。用于提高效率的重要部件之一是DC/DC升压转换器。本文提出了一种基于模糊逻辑控制器(FLC)和人工神经网络(ANN)的新型DC/DC变换器混合控制模型。构建模型的途径分为三步,第一步是基于FLC生成数据,第二步是选择人工神经网络结构对FLC建模,最后一步是对得到的模型进行测试和验证。构建人工神经网络的阶段是通过基于反向传播算法的监督学习来实现的。该算法通过搜索FLC输出与人工神经网络模型之间的均方根误差最小的最优权值和阈值来训练人工神经网络模型。在智能控制器和经典P&O算法之间同时进行不同辐照值的验证试验。
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引用次数: 9
Mitigating IoT-based Cyberattacks on the Smart Grid 缓解基于物联网的智能电网网络攻击
Y. Yilmaz, S. Uludag
The impact of cybersecurity attacks on the Smart Grid may cause cyber as well as physical damages, as clearly shown in the recent attacks on the power grid in Ukraine where consumers were left without power. A set of recent successful Distributed Denial-of-Service (DDoS) attacks on the Internet, facilitated by the proliferation of the Internet-of-Things powered botnets, shows that it is just a matter of time before the Smart Grid, as one of the most attractive critical infrastructure systems, becomes the target and likely victim of similar attacks, potentially leaving catastrophic disruption of power service to millions of people. It is in this context that we propose a scalable mitigation approach, referred to as Minimally Invasive Attack Mitigation via Detection Isolation and Localization (MIAMI-DIL), under a hierarchical data collection infrastructure. We provide a proofof- concept by means of simulations which show the efficacy and scalability of the proposed approach.
网络安全攻击对智能电网的影响可能会造成网络和物理损害,最近乌克兰电网遭受的攻击清楚地表明了这一点,消费者无法用电。最近互联网上一系列成功的分布式拒绝服务(DDoS)攻击,由物联网驱动的僵尸网络的扩散推动,表明智能电网作为最具吸引力的关键基础设施系统之一,成为类似攻击的目标和可能的受害者只是时间问题,可能给数百万人的电力服务造成灾难性的中断。正是在这种背景下,我们提出了一种可扩展的缓解方法,称为通过检测隔离和定位的微创攻击缓解(MIAMI-DIL),在分层数据收集基础设施下。通过仿真验证了该方法的有效性和可扩展性。
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引用次数: 15
期刊
2017 16th IEEE International Conference on Machine Learning and Applications (ICMLA)
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