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2021 International Conference on Computational Science and Computational Intelligence (CSCI)最新文献

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Using Data Analytics to Forecast Violent Crime 使用数据分析预测暴力犯罪
Herious A. Cotton, T. Kwembe
In this paper, we used data analytics to analyze criminal data. Prophet model, LSTM recurrent neural network model, a linear regression model, and traditional neural network model were used to predict homicide and rape in the Southeastern Cities of Memphis Tennessee, Jackson Mississippi, and New Orleans Louisiana. LSTM recurrent neural network model and traditional neural network model have smaller RMSE. Thus, LSTM recurrent neural network model and traditional neural network model performed better than the prophet and linear regression models. These promising outcomes will be significant to scholars, policymakers, and law enforcement officers.
在本文中,我们使用数据分析来分析犯罪数据。采用先知模型、LSTM递归神经网络模型、线性回归模型和传统神经网络模型对田纳西州孟菲斯市、密西西比州杰克逊市和路易斯安那州新奥尔良市的杀人和强奸事件进行了预测。LSTM递归神经网络模型与传统神经网络模型的均方根误差较小。因此,LSTM递归神经网络模型和传统神经网络模型的性能优于先知模型和线性回归模型。这些有希望的成果将对学者、政策制定者和执法人员具有重要意义。
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引用次数: 1
A Fully Convolutional Neural Network Based on 2D-Unet in Cardiac MR Image Segmentation 基于2D-Unet的全卷积神经网络在心脏MR图像分割中的应用
Yifeng Tan, Lina Yang, Xichun Li, Zuqiang Meng
Cardiac MRI image segmentation is of great importance for evaluating cardiac function and diagnosing diseases. Manual segmentation is time-consuming and tedious, so automatic segmentation is very popular in practical applications. In this paper, we propose an improved full convolutional neural network based on 2D-Unet for automatic segmentation of the left ventricle, right ventricle and myocardium. Experiments were conducted on the ACDC 2017 Challenge Training dataset. The segmentation results were assessed by means of average vertical distance, Dice coefficient and Hausdorff distance. Our model reduces the amount of parameters, improves the training speed, uses the fusion loss function, and maintains a satisfactory segmentation accuracy of left ventricle, right ventricle and myocardium.
心脏MRI图像分割对心功能评价和疾病诊断具有重要意义。人工分割费时且繁琐,因此自动分割在实际应用中非常流行。本文提出了一种改进的基于2D-Unet的全卷积神经网络,用于左心室、右心室和心肌的自动分割。在ACDC 2017挑战训练数据集上进行实验。通过平均垂直距离、Dice系数和Hausdorff距离对分割结果进行评价。我们的模型减少了参数的数量,提高了训练速度,使用了融合损失函数,保持了左心室、右心室和心肌的良好分割精度。
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引用次数: 0
Ant Colony Optimization for Balanced Multiple Traveling Salesmen Problem 平衡多重旅行商问题的蚁群优化
B. Sun, Chuan Wang, Qiang Yang, Weili Liu, Wei-jie Yu
Balanced multiple traveling salesmen problems (BMTSP) are a popular kind of combinatorial optimization problems widely existing in the real world. This problem aims to minimize the total path length of all salesmen, and at the same time minimize the longest path among all salesmen to keep the path length balance. To solve this problem effectively, this paper proposes a balance biased ant colony optimization (BACO) algorithm. Specifically, this algorithm maintains ant groups to optimize the paths of all salesmen with each ant group responsible for constructing a feasible solution and each ant in a group responsible for building the path of one salesman. To construct balanced paths for all salesmen, this paper further develops four ant selection mechanisms to construct paths, namely, Random Selection (RS), Shortest Biased Selection (SBS), Future Balance Biased Selection (FBBS) and Future Shortest Biased Selection (FSBS). Additionally, we further introduce the 2-opt local search operation to optimize the path of each salesman. Finally, extensive experiments conducted on four TSPLIB benchmark sets with different numbers of salesmen demonstrate that the proposed BACO with the four ant selection mechanisms shows much better performance than a state-of-the-art genetic algorithm (GA). In particular, among the four selection mechanisms, the FSBS strategy helps BACO achieve the best performance in solving BMSTP.
平衡多旅行推销员问题(BMTSP)是一种广泛存在于现实世界中的组合优化问题。该问题的目标是最小化所有销售人员的总路径长度,同时最小化所有销售人员中最长的路径,以保持路径长度的平衡。为了有效地解决这一问题,本文提出了一种平衡偏置蚁群优化算法(BACO)。具体而言,该算法维护蚂蚁群来优化所有销售人员的路径,每个蚂蚁组负责构建一个可行解,组中的每个蚂蚁负责构建一个销售人员的路径。为了构建所有销售人员的均衡路径,本文进一步发展了四种蚂蚁选择机制来构建路径,即随机选择(RS)、最短偏差选择(SBS)、未来平衡偏差选择(FBBS)和未来最短偏差选择(FSBS)。此外,我们进一步引入了2-opt局部搜索操作来优化每个销售人员的路径。最后,在4个具有不同数量销售人员的TSPLIB基准集上进行了大量实验,结果表明,具有4种蚂蚁选择机制的BACO比最先进的遗传算法(GA)表现出更好的性能。在四种选择机制中,FSBS策略可以帮助BACO在解决BMSTP问题时获得最佳性能。
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引用次数: 6
Development of a Wireless Communication System for Reliable Acoustic Data Collection Toward Anomaly Detection in Mechanical Equipment 面向机械设备异常检测的可靠声学数据无线采集系统的研制
Chinari Takano, S. Fujino, Daiki Nobayashi, K. Tsukamoto, M. Mizumachi, T. Ikenaga
With the recent proliferation of Internet of Things (IoT) devices that can send and receive data via wireless communication, we are able to monitor and operate these devices remotely. An example of an IoT system using wireless communication is a system for anomaly detection in mechanical equipment using acoustic data. In order to detect anomalies using acoustic data, continuous recording is essential, thereby increasing the data size. Although Wi-Fi networks provide high-capacity data transfer, performance degradation cannot be avoided due to reasons such as packet losses caused by collisions with data from other devices using the same frequency and the increase in distance between two communicating devices. In the present study, we developed a wireless communication system for reliable acoustic data collection for anomaly detection in mechanical equipment. First, as preliminary experiments, we investigated the communication characteristics for the transmission of large-size data by Wi-Fi in indoor and outdoor environments. The results indicated the communication performance was insufficient for transferring all recorded data handled by this system. Therefore, we developed a simple heuristic transmission timing control method and a method that can reduce the amount of transmission data in order to realize a stable acoustic data collection system. Finally, through demonstration experiments using mechanical equipment in the field, we verified the feasibility of the acoustic data collection system.
随着最近可以通过无线通信发送和接收数据的物联网(IoT)设备的激增,我们能够远程监控和操作这些设备。使用无线通信的物联网系统的一个示例是使用声学数据进行机械设备异常检测的系统。为了利用声学数据检测异常,连续记录是必不可少的,从而增加了数据量。虽然Wi-Fi网络提供了大容量的数据传输,但由于与使用相同频率的其他设备的数据碰撞导致的数据包丢失以及两个通信设备之间的距离增加等原因,性能下降无法避免。在本研究中,我们开发了一种无线通信系统,用于可靠的声学数据采集,用于机械设备的异常检测。首先,作为初步实验,我们研究了室内和室外环境下Wi-Fi传输大容量数据的通信特性。结果表明,该系统的通信性能不足以传输所有记录数据。因此,我们开发了一种简单的启发式传输定时控制方法和一种可以减少传输数据量的方法,以实现稳定的声学数据采集系统。最后,通过现场机械设备的演示实验,验证了声学数据采集系统的可行性。
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引用次数: 0
UV-C VentGuard: An IoT-based Monitoring and Disinfection System for Pathogen Inactivation in Ventilation Pipes of High-rise Buildings UV-C VentGuard:基于物联网的高层建筑通风管道病原体灭活监测消毒系统
R. Lam, C. K. Tang, K. L. Cheung, L. Lam
SARS-CoV-2 traveling through ventilating pipes in high-rise buildings present an urgent concern to address. This paper describes an IoT monitoring system designed to disinfect the air traveling through the pipes. Site tests demonstrate that the system provides a cost-effective solution for pathogen inactivation in ventilating pipes of high-rise buildings, and that it can play a positive role in mitigating the spread of the COVID-19 pandemic in built environments.
SARS-CoV-2通过高层建筑的通风管道传播是一个迫切需要解决的问题。本文介绍了一种物联网监测系统,用于对流经管道的空气进行消毒。现场试验表明,该系统为高层建筑通风管道的病原体灭活提供了一种经济高效的解决方案,对减缓新冠肺炎疫情在建筑环境中的传播具有积极作用。
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引用次数: 0
Ashurbanipal: A Diristry to Document Multimedia Metadata Tools for Transdisciplinary Archives 亚述巴尼拔:跨学科档案多媒体元数据工具的一个部门
Anousha Athreya, S. K. Taswell, Andrew Kang, Ishani Das, C. Taswell
In historical artifact conservation, archiving objects using entity metadata plays a significant role in managing the related versions of the artifacts preserved, recorded and documented at various time points. In this paper, we discuss five fields of study to display the importance of related versions in identifying patterns over time through historical events, cultural heritage, brain health, performing arts, and fine arts. We describe our use of the Ashurbanipal diristry to document scholarly research on archiving tools and technologies. We highlight the importance of the provenance infosubset in tracing metadata for cultural objects managed in NPDS repositories and enabling interoperability with existing multimedia bibliographic formats including MARC and BIBFRAME.
在历史文物保护中,使用实体元数据对文物进行归档,对于管理不同时间点保存、记录和记录的文物的相关版本起着重要作用。在本文中,我们讨论了五个研究领域,以展示相关版本在通过历史事件、文化遗产、大脑健康、表演艺术和美术识别模式方面的重要性。我们描述了我们使用亚述巴尼拔地区来记录存档工具和技术的学术研究。我们强调了来源信息子集在追踪NPDS存储库中管理的文化对象的元数据以及实现与现有多媒体书目格式(包括MARC和BIBFRAME)的互操作性方面的重要性。
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引用次数: 0
The Effects of Different Parameters on the Accuracy of Deep Learning Models for Predicting U.S. Citizen’s Life Expectancy 不同参数对深度学习模型预测美国公民预期寿命准确性的影响
Michelle Hu, Yen-Hung Frank Hu
The increasing prevalence of deep learning-based machines in the daily life of average people results in a demand for research to be done on improving the accuracy of deep learning models. In response to this need, this paper aims to explore the effects of changing the parameters of a deep learning model, including the neuron count, epoch count, batch size, and validation split on the prediction accuracy of a deep learning model. We used the programming language Python, the TensorFlow and Pandas libraries, and the Keras application programming interface to create 13 regression-based deep learning models, all but one, which was used as a standard, of which had a parameter altered to be lower or higher than the standard model. After training each model using a dataset comprised of data from the 2010 United States census, we measured the predictive accuracy of each model at different epoch counts using the absolute average difference between the predictions of life expectancy from the models and the actual value from the 2010 U.S. census dataset. Based on the absolute average difference for each model, we found that increasing the neuron count, epoch count, and batch size and decreasing the validation split improves prediction accuracy in deep learning models, in most cases. These results can be used to create more accurate deep learning models for scientific or commercial use, and the models themselves can be used for their ability to predict life expectancies from given data, based on learned trends.
基于深度学习的机器在普通人的日常生活中越来越普遍,这导致人们需要研究如何提高深度学习模型的准确性。针对这一需求,本文旨在探讨改变深度学习模型的参数,包括神经元计数、epoch计数、批处理大小和验证分割对深度学习模型预测精度的影响。我们使用编程语言Python、TensorFlow和Pandas库以及Keras应用程序编程接口创建了13个基于回归的深度学习模型,除了一个模型外,其余模型都被用作标准模型,其中参数被修改为低于或高于标准模型。在使用由2010年美国人口普查数据组成的数据集训练每个模型后,我们使用模型预测的预期寿命与2010年美国人口普查数据集的实际值之间的绝对平均差来测量每个模型在不同历元计数下的预测精度。基于每个模型的绝对平均差异,我们发现在大多数情况下,增加神经元计数、epoch计数和批处理大小并减少验证分割可以提高深度学习模型的预测精度。这些结果可用于为科学或商业用途创建更准确的深度学习模型,并且模型本身可用于根据学习趋势从给定数据预测预期寿命的能力。
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引用次数: 1
Learning Finance with Games: An Empirical Study 用游戏学习金融:一项实证研究
Sandy Ingram, Rania Islambouli, Miharisoa Andrianantenaina, Jean‐Philippe Weisskopf, Philippe Masset, Nicole Baudat
This paper presents an empirical case study on applying game-based learning in an undergraduate finance course. The paper describes the experimental study context, protocol, and results. Using multivariate regression analysis, a significant game effect on student performance is observed for competitive strategy-based games.
本文以金融学本科课程为例,对游戏学习进行了实证研究。本文描述了实验研究的背景、方案和结果。运用多元回归分析,我们观察到竞争策略游戏对学生成绩的显著影响。
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引用次数: 0
A Remote Instructional Approach with Interactive and Collaborative Learning to Teach an Introductory Programming Course during COVID-19 Pandemic 基于互动和协作学习的远程教学方法在COVID-19大流行期间教授编程入门课程
Md Mahmudur Rahman, Roshan Paudel Morgan
This work presents our experience and approach of teaching an introductory CS programming course remotely in this pandemic era without missing out on the benefits of hands-on learning generally used in-person learning environment. Synchronous virtual learning occurs when students join an audio/video enabled meeting space at the same time through several cloud based services, such as Zoom based conference tool, interactive cloud based coding environment in repl.it and GoSoapBox platform for online in-classroom engagement, which were well integrated in the Canvas based Learning Management System (LMS). To keep the structure of the session much like an in person learning experience, the synchronous session included whole group instruction in Zoom led by the instructor and small group (breakout room) based lab work in Repl.it amongst the learners. Both interactive and collaborative learning are infused in pedagogy effectively so that students can learn using interactive platforms, tools, technologies, systems, and services as available to them and collaborate within and among groups. To evaluate the impact of this infusion, a pre- and post-survey were conducted on student cohort (4 sections taught by 3 different instructors) in the Fall’2020 semester. In addition, final project scores and final grades for Fall’2020 semester and enrollment number and final grade distributions from Fall’2017 to Fall’2020 were also available for analysis. The initial evaluation of the survey results and student’s performances based on quality point scores show evidence to conclude that the proposed pedagogical approach increased student motivation and engagement and facilitated learning to entry-level computer science students.
这项工作展示了我们的经验和方法,在这个大流行的时代远程教授入门CS编程课程,而不会错过实践学习的好处,通常使用面对面的学习环境。同步虚拟学习是指学生通过多个基于云的服务(如基于Zoom的会议工具、基于repl的交互式云编码环境)同时加入一个支持音频/视频的会议空间。它和GoSoapBox平台的在线课堂参与,这些都很好地集成在基于Canvas的学习管理系统(LMS)中。为了保持会议的结构更像面对面的学习经验,同步会议包括由讲师领导的Zoom全组教学和基于Repl的小组(分组讨论室)实验室工作。它在学习者之间。互动式学习和协作式学习都有效地融入到教学中,使学生能够利用他们可用的互动平台、工具、技术、系统和服务进行学习,并在小组内部和小组之间进行协作。为了评估这种注入的影响,我们在2020年秋季学期对学生群体(由3位不同的教师授课的4个小组)进行了前后调查。此外,还提供了2020年秋季学期的最终项目分数和最终成绩,以及2017年秋季至2020年秋季的入学人数和最终成绩分布情况。对调查结果和基于质量点分数的学生表现的初步评估显示,有证据表明,所提出的教学方法提高了学生的积极性和参与度,并促进了入门级计算机科学学生的学习。
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引用次数: 0
Usability Heuristics for Early Primary Children: A Case Study in Sri Lanka 小学早期儿童可用性启发式:斯里兰卡个案研究
S. Samarakoon, T. Weerasinghe, Hakim Usoof
Tablet-mediated learning becomes popular among kindergarten children with the encroachment of technology . Most educational app developers target pre-school children in their app market. Therefore developers increasingly create educational apps that target this age group. The study of usability aspects of such applications is important due to the lack of cognitive and physical development of children in this age group. However, as per the literature most of the current applications for pre-school children are not successful due to a lack of consideration of usability. Hence, preschool children face many usability issues when using these applications. Due to limited cognitive and physical development, children of early primary education find it difficult to use those applications. There are many usability frameworks developed but most of them have been developed targeting adult users. So, there is no standard framework for early primary children. Hence, this research aims to propose a set of usability heuristics that can be used by the designers of tablet-mediated applications for early primary children.
随着科技的侵入,平板电脑学习在幼儿园儿童中越来越流行。大多数教育应用开发者的目标用户都是学龄前儿童。因此,开发人员越来越多地开发针对这个年龄段的教育应用程序。由于这个年龄组的儿童缺乏认知和身体发育,研究这些应用程序的可用性方面是很重要的。然而,根据文献,由于缺乏对可用性的考虑,目前大多数针对学龄前儿童的应用都不成功。因此,学龄前儿童在使用这些应用程序时面临许多可用性问题。由于认知和身体发育的限制,小学早期教育的孩子很难使用这些应用程序。已经开发了许多可用性框架,但大多数都是针对成人用户开发的。所以,对于小学早期的孩子没有标准的框架。因此,本研究旨在提出一套可用性启发法,供早期小学儿童平板电脑中介应用程序的设计者使用。
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引用次数: 2
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2021 International Conference on Computational Science and Computational Intelligence (CSCI)
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