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2018 International Conference on Intelligent Informatics and Biomedical Sciences (ICIIBMS)最新文献

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Traffic Police Gesture Recognition using RGB-D and Faster R-CNN 使用RGB-D和更快的R-CNN的交通警察手势识别
Guan Wang, Xianghua Ma
How to make self-driving cars understand the traffic gestures of traffic police is crucial for driverless, especially in China there are many police to help the traffic move smoothly and quickly at different intersection in rush hours. Faster R-CNN in deep learning is a mainstream method, however, has a low recognition rate in the case of complex backgrounds. In order to improve the recognition accuracy under complex environment, a two-stream Faster R-CNN based on color and depth data is proposed in this paper. Depth channel information is used to combine with RGB channel information at the feature level. RGB channel information is integrated with Depth channel information based on Faster R-CNN and RGB-D. Experimental results show that this method is more advantageous than the Faster R-CNN using only RGB data.
如何让自动驾驶汽车理解交警的交通手势对无人驾驶来说是至关重要的,特别是在中国,在高峰时段,不同的十字路口有很多警察来帮助交通平稳快速地移动。在深度学习中,更快的R-CNN是主流方法,但在复杂背景下识别率较低。为了提高复杂环境下的识别精度,本文提出了一种基于颜色和深度数据的两流Faster R-CNN算法。深度通道信息用于在特征级与RGB通道信息相结合。RGB通道信息与基于Faster R-CNN和RGB- d的深度通道信息相结合。实验结果表明,该方法比仅使用RGB数据的Faster R-CNN更有优势。
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引用次数: 6
Optimal PCA-EOC-KNN Model for Detection of NS1 from Salivary SERS Spectra 唾液SERS光谱检测NS1的PCA-EOC-KNN优化模型
N. Othman, K. Y. Lee, A. Radzol, W. Mansor, U. M. Rashid
Non Structural Protein 1 (NS1) has recently been known as an alternative biomarker for diseases caused by flavivirus. It has been clinically acknowledged for early detection of dengue infection, since NS1 presence in blood can be as early as the first day of infection. Surface Enhanced Raman Spectroscopy (SERS) is an improvement to Raman spectroscopy, which amplifies the intensity of Raman scattering so to be usable. This also enables SERS to detect molecular structure up to a single molecule. As such, it is favorable amongst researchers investigating disease biomarker. Algorithm k-nearest neighbor (kNN) is a strategy to classify an unknown based on learning data, nearest to the class. Our work here intends to determine the optimal nearest neighbor number, distance rule and classifier rule for PCA-EOC-KNN model for automated detection of NS1 fingerprint from SERS spectra of adulterated saliva. Results show that PCA-EOC-KNN classifier performs with accuracy, precision, sensitivity and specificity above 90%, using Consensus classifier rule, Euclidean or Correlation or Cosine distance rule and k-value of 1, 3 and 5.
非结构蛋白1 (NS1)最近被认为是黄病毒引起疾病的另一种生物标志物。它已被临床认可为早期发现登革热感染,因为血液中存在NS1可早在感染的第一天。表面增强拉曼光谱(SERS)是对拉曼光谱的一种改进,它放大了拉曼散射的强度,从而可以使用。这也使SERS能够检测到单个分子的分子结构。因此,它在研究疾病生物标志物的研究人员中很受欢迎。kNN (k-nearest neighbor)算法是一种基于最接近类的学习数据对未知进行分类的策略。我们的工作旨在确定PCA-EOC-KNN模型的最优近邻数、距离规则和分类器规则,用于从掺假唾液的SERS光谱中自动检测NS1指纹。结果表明,PCA-EOC-KNN分类器采用一致性分类器规则、欧式或相关或余弦距离规则,k值分别为1、3和5,准确率、精密度、灵敏度和特异性均在90%以上。
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引用次数: 1
Face Recognition Based on PCA with Weighted and Normalized Mahalanobis distance 基于马氏距离加权归一化PCA的人脸识别
Nwayyin Najat Mohammed, MD. khaleel, M. Latif, Zana Khalid
The principle component analysis(PCA) is a common feature extraction method in machine learning and pattern recognition approaches. PCA has been used in many applications, and face recognition in which specific faces are recognizing in an images database is one of the popular applications. The default distance metric which has been used with PCA based-face recognition is Euclidean distance. In this study, we have tested the Mahalanobis distance instead of Euclidean, and PCA based on Mahalanobis distance suggested a better performance on our students images database with highest recognition rate. However, we proposed weighted and normalized Mahalanobis distance based PCA-face recognition(PCA_WNMD). The proposed algorithm (PCA_WNMD) showed an improvement in faces recognition rate when tested on our students images database compared to PCA based on Mahalanobis and default Euclidean distances.
主成分分析(PCA)是机器学习和模式识别中常用的特征提取方法。PCA在很多应用中都得到了应用,其中人脸识别就是在图像数据库中对特定的人脸进行识别。基于PCA的人脸识别的默认距离度量是欧氏距离。在本研究中,我们测试了马氏距离而不是欧氏距离,基于马氏距离的PCA在我们的学生图像数据库中表现出更好的性能,识别率最高。然而,我们提出了加权和归一化的基于马氏距离的pca人脸识别(PCA_WNMD)。与基于Mahalanobis和默认欧氏距离的PCA相比,本文提出的算法(PCA_WNMD)在学生图像数据库上的人脸识别率有所提高。
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引用次数: 12
People Flow Reconstruction in Cities 城市人流重建
Massimo Marchiori
People flows are of primary importance in a city environment, making up for an essential component of interest in every city. Yet, study of people flows has to face severe problems, mainly due to the high cost/benefit ratio of trying to get flow information. People flows tend to be seen as secondary with respect to traffic in most parts of the cities. The result of this policy is that the detection of their actual status, and corresponding maintenance, is often far from optimal. In this study we tackle the problem of extracting people flow information, and also show a concrete example of usage of the data, that allows to monitor the pedestrian infrastructure of a city. Following the Smart Cheap City (SCC) approach, we design and implement a system of sensors that allows to gather people flow data by staying within a very limited budget. We then show how this raw data can actually be used to reconstruct people flows, and then investigate the relationship between this flow information and the problem of infrastructure monitoring. We experiment with the system in a major experiment involving five cities, using various configurations, and show the effectiveness of the method when used on the field. The overall lesson is that the problem of reconstructing people flows within cities can be faced even when employing very limited resources, also allowing for a better handling of the related transportation infrastructures.
人口流动在城市环境中至关重要,是每个城市的重要组成部分。然而,对人员流动的研究面临着严峻的问题,主要是由于试图获取流动信息的成本/效益比很高。在城市的大部分地区,相对于交通,人流往往被视为次要的。这种策略的结果是,对其实际状态的检测以及相应的维护往往远非最佳状态。在本研究中,我们解决了提取人流信息的问题,并展示了数据使用的具体示例,该示例允许监控城市的行人基础设施。遵循智能廉价城市(SCC)方法,我们设计并实施了一个传感器系统,可以在非常有限的预算范围内收集人流数据。然后,我们展示了如何使用这些原始数据来重建人流,然后调查这些人流信息与基础设施监控问题之间的关系。我们在涉及五个城市的主要实验中对该系统进行了实验,使用了不同的配置,并在现场使用时显示了该方法的有效性。总的教训是,即使在使用非常有限的资源的情况下,也可以面对重建城市内人口流动的问题,同时也可以更好地处理有关的运输基础设施。
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引用次数: 2
Classification of Benign Paroxysmal Positioning Vertigo Types from Dizziness Handicap Inventory using Machine Learning Techniques 利用机器学习技术对眩晕障碍清单中的良性阵发性定位性眩晕类型进行分类
Lawana Masankaran, Waraporn Viyanon, Visan Mahasittiwat
Benign Paroxysmal Positioning Vertigo (BPPV) is one of the causes of vertigo which extremely affects the daily life of patients. Different types of BPPV are treated in a different way. Physicians differentiate the BPPV types using nystagmus characteristics. However, some patients have unclear nystagmus, so their treatments are delayed due to the difficulty of diagnosis. Dizziness Handicap Inventory (DHI) is a tool to assess the severity of dizziness before a patient is diagnosed by a physician. The use of DHI can distinguish BPPV types which can help physicians decide what treatments would be suitable for patients. This research aims to study the ability of using DHI for diferrential diagnosis of Posterior canal — Benign Paroxysmal Positioning Vertigo (PC-BPPV) and Horizontal canal — Benign Paroxysmal Positioning Vertigo (HC-BPPV) via machine learning techniques. We used feature selection techniques and feature engineering to increase the power of machine learning algorithms. Random Forest, Support vector machine, K-Nearest Neighbor and Naïve Bayes were used to develop predictive models from DHI features that have statistically significant. Accuracy, precision, recall, and F1-score were used to evaluate the performance of each model. It reveals that F7+E23, age and P8 are the top three important features and the model using Gaussian Naïve Bayes is the best model to discriminate HC-BPPV and PC-BPPV with 73.91% accuracy, 66.67% precision, 80.00% recall and 72.73% F1-score. In conclusion, the models that were created from DHI score can predict BPPV types at a certain level, but still not very good. Physicians have to use patient�s medical history and nystagmus observation for diagnosis. In the future, if we can collect more data or features, we may reduce the overfitting problem and have a better performance model.
良性阵发性定位性眩晕(BPPV)是引起眩晕的原因之一,严重影响患者的日常生活。不同类型的BPPV有不同的治疗方法。医生根据眼球震颤特征来区分BPPV的类型。但部分患者眼球震颤不明显,因诊断困难而延误治疗。头晕障碍量表(DHI)是一种在医生诊断患者之前评估头晕严重程度的工具。使用DHI可以区分BPPV类型,这可以帮助医生决定适合患者的治疗方法。本研究旨在通过机器学习技术研究DHI对后管-良性阵发性定位眩晕(PC-BPPV)和水平管-良性阵发性定位眩晕(HC-BPPV)的鉴别诊断能力。我们使用特征选择技术和特征工程来提高机器学习算法的能力。使用随机森林、支持向量机、k近邻和Naïve贝叶斯从具有统计显著性的DHI特征中开发预测模型。准确度、精密度、召回率和f1评分用于评估每个模型的性能。结果表明,F7+E23,年龄和P8是最重要的三个特征,使用高斯Naïve贝叶斯模型是区分HC-BPPV和PC-BPPV的最佳模型,准确率为73.91%,精密度为66.67%,召回率为80.00%,f1得分为72.73%。综上所述,由DHI评分建立的模型可以在一定程度上预测BPPV类型,但仍然不是很好。医生必须根据病人的病史和眼球震颤观察来诊断。在未来,如果我们能收集到更多的数据或特征,我们可能会减少过拟合问题,得到更好的性能模型。
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引用次数: 5
An $l_{1}-l_{1}$ -Norm Minimization Solution Using ADMM with FISTA 基于FISTA的ADMM -l_{1}$ -范数最小化解
T. Oishi, Y. Kuroki
This paper discusses compressed sensing which reconstructs original sparse signal from observed data. Our approach formulates the weighted sum of $l_{1}$ -norm error and $l_{1}$ -norm regularization terms, and applies Alternating Direction Method of Multipliers (ADMM) to solve it. Many works employ ADMM for the $l_{1}-l_{1}$ -norm minimization problems, where ADMM obtains solutions in an iterative fashion for the problems formed as an augmented Lagrangian. The ADMM process is divided into three steps: an error minimization, a coefficient-norm minimization, and a dual variable update of an augmented Lagrangian. However, the coefficient-minimization step is not clear and replaced with an approximation. Our contribution is to adopt the Fast Iterative Shrinkage-Thresholding Algorithm (FISTA) for the minimization step and achieves faster implementation than a conventional method.
本文讨论了从观测数据重构原始稀疏信号的压缩感知技术。该方法将$l_{1}$ -范数误差和$l_{1}$ -范数正则化项加权和,并应用乘法器交替方向法(ADMM)求解。许多作品使用ADMM来求解$l_{1}- $l_{1}-范数最小化问题,其中ADMM以迭代的方式获得作为增广拉格朗日量形成的问题的解。ADMM过程分为三个步骤:误差最小化、系数-范数最小化和增广拉格朗日的对偶变量更新。然而,系数最小化步骤并不明确,而是用近似值代替。我们的贡献是采用快速迭代收缩阈值算法(FISTA)进行最小化步骤,实现速度比传统方法快。
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引用次数: 4
Gene Selection Approach Utilizing Data Clustering Based Technique Optimization for Tumor Classification 基于数据聚类的基因选择方法优化肿瘤分类
Kefaya Qaddoum
This paper introduces an advanced approach to classify tumor type by microarray gene selection records. The method utilizes gene selection based on shuffling in connection with optimized data clustering. Merging Artificial Bee Colony (ABC) with genetic algorithm (GA) as a clustering tool to choose the key genes develops a new hybrid algorithm, ABC-GA. Support Vector Machine recursive feature elimination (SVM-RFE) and Multilayer Perceptron (MLP) artificial neural networks were used to enhance accuracy. Nonetheless, outcomes show that using shuffling in clustering strengthen classification accuracy significantly. The suggested algorithm (ABC-GA) performs better than Swarm optimization technique (PSO) in reaching good classification results. Better precision has been achieved using (SVM-RFE) classifier against MLP
本文介绍了一种利用微阵列基因选择记录来分类肿瘤类型的新方法。该方法将基于洗牌的基因选择与优化的数据聚类相结合。将人工蜂群算法(ABC)与遗传算法(GA)作为聚类工具进行关键基因选择,提出了一种新的混合算法ABC-GA。支持向量机的递归特性消除(SVM-RFE)和多层感知器(MLP)人工神经网络用于提高准确性。尽管如此,结果表明,在聚类中使用洗牌可以显著提高分类精度。本文提出的算法(ABC-GA)在分类效果上优于群优化算法(PSO)。使用(SVM-RFE)分类器对MLP获得了更好的精度
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引用次数: 0
Influence of Light Intensity on a Motion Artifact Signal in a Photoplethysmographic Signal 光强对光容积脉搏波信号中运动伪信号的影响
J. Koseeyaporn, Sakkarin Sinchai, P. Tuwanut, P. Wardkein
A photoplethygraphic (PPG) signal acquired from a commercial pulse oximeter is habitually disfigured by a motion artifact (MA) signal while any motion takes place. Inherently, the MA signal can either be additive or multiplicative, By having the MA signal intertwined with the PPG signal, the estimate of the oxygen saturation (SpO2) value is unreliable. The computation of SO02 value is based on proper red and infrared (IR) PPG signals measured by the pulse oximeter. Generally, the frequency components of the red and IR PPG signals as well as the MA signal are in the same range. To overwhelm this problem, the frequency components of the red and IR PPG signals are severed from the frequency band of the MA signal. To implement the separation, a legacy source of driving red and IR LEDs in the pulse oximeter is replaced by two alternating current sources having different frequencies. With this solution, the additive MA signal is no longer involved but the multiplicative MA signal is yet not concluded. In this work, change in light intensity fed to both red and IR LEDs is studied whether the changed light intensity has any impact on the multiplicative MA signal. According to the study, it is found that change in light intensity does not affect the multiplicative MA signal. The multiplicative MA signal still exists since the overall calculated SpO2 values have some error up to 1 %. Besides, change in light intensity does not improve the quality of the estimated SpO2 values while resting.
当任何运动发生时,从商用脉搏血氧仪获得的光电波形(PPG)信号通常会被运动伪影(MA)信号毁损。固有地,MA信号可以是相加的,也可以是相乘的,由于MA信号与PPG信号交织在一起,对氧饱和度(SpO2)值的估计是不可靠的。SO02值的计算是基于脉搏血氧计测量的适当的红色和红外(IR) PPG信号。一般来说,红色和红外PPG信号的频率成分与MA信号在同一范围内。为了解决这个问题,红色和红外PPG信号的频率成分从MA信号的频带中分离出来。为了实现分离,在脉搏血氧计中驱动红色和红外led的传统源被两个具有不同频率的交流电源取代。该解不再涉及加性MA信号,但尚未得出乘性MA信号。在这项工作中,研究了红光和红外led的光强变化是否对乘法MA信号有任何影响。研究发现,光强的变化不影响乘法MA信号。由于总体计算的SpO2值存在一些误差,因此乘法MA信号仍然存在,误差高达1%。此外,光强的变化并不会改善静息时SpO2值的估计质量。
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引用次数: 1
Observer design of high throughput screening system based on dioid 基于双oid的高通量筛选系统观测器设计
Chen Zhou
High Throughput Screening system (HTS) is an emerging class of discrete event systems, usually described by the Max-Plus model. In order to improve system analysis and control efficiency, the Max-Plus model is extended to dioid model , which can efficiently describe and control the system from both time domain and event domain. However, in the actual process of high throughput screening systems with interference, malfunction and other factors, either due to the lack of corresponding sensors, or because it is not possible to directly measure, it may be necessary to try to estimate the state of some systems observation. Therefore, this paper is based on the observer design of high throughput screening system of dioid model to solve such problems. The observer is added to the high-throughput screening system with interference, the optimal observer matrix is obtained according to the residuation theory, and the state estimation of the system with interference is carried out by using the input and output measurements. Finally, an example is given to verify the effectiveness of this observer design method.
高通量筛选系统(HTS)是一类新兴的离散事件系统,通常用Max-Plus模型来描述。为了提高系统分析和控制效率,将Max-Plus模型扩展为二维模型,从时域和事件域对系统进行有效的描述和控制。然而,在高通量筛选系统的实际过程中存在干扰、故障等因素,或由于缺乏相应的传感器,或由于无法直接测量,可能需要尝试对某些系统的状态进行观测估计。因此,本文基于二元模型高通量筛选系统的观测器设计来解决这一问题。将观测器加入到有干扰的高通量筛选系统中,根据残差理论得到最优观测器矩阵,利用输入输出测量值对有干扰的系统进行状态估计。最后通过一个算例验证了该观测器设计方法的有效性。
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引用次数: 0
Class Design for Providing Input Data to Help Debugging 提供输入数据以帮助调试的类设计
Jung Min Won, Young Jae Shin, Sangyong Byun
This paper designs an input class that provides the data necessary for the test to reduce the time and inconvenience caused by the frequent input of test data in the debugging process after programming. Using the test-driven development concept, test data is provided using equivalence partitioning and boundary value analysis of black-box test.
本文设计了一个输入类,提供测试所需的数据,以减少编程后调试过程中频繁输入测试数据所带来的时间和不便。采用测试驱动的开发理念,利用等效划分和黑盒测试的边界值分析提供测试数据。
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引用次数: 0
期刊
2018 International Conference on Intelligent Informatics and Biomedical Sciences (ICIIBMS)
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