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Exhaustive mathematical analysis of simple clinical measurements for childhood pneumonia diagnosis

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World Journal of Pediatrics 2017年第5期13卷 446-456页

作者： Keegan Kosasih Udantha Abeyratne school of itee The University of QueenslandSir Fred Schonell DriveSt.LuciaBrisbaneQLDAustralia

Background:Pneumonia is the leading cause of mortality for children below 5 years of *** majority of these occur in poor countries with limited access to *** World Health Organization (WHO) criterion for pneumonia is the de facto method for *** is designed targeting a high sensitivity and uses easy to measure *** WHO criterion has poor ***:We propose a method using common measurements (including the WHO parameters) to diagnose pneumonia at high sensitivity and *** clinical features obtained from 134 subjects were used to create a series of logistic regression *** started with one feature at a time,and continued building models with increasing number of features until we exhausted all possible *** used a k-fold cross validation method to measure the performance of the ***:The sensitivity of our method was comparable to that of the WHO criterion but the specificity was 84%-655% *** the 2-11 month age group,the WHO criteria had a sensitivity and specificity of 92.0%±11.6% and 38.1%±18.5%,*** best model (using the existence of a runny nose,the number of days with runny nose,breathing rate and temperature) performed at a sensitivity of 91.3%±13.0% and specificity of 70.2%±22.80%.In the 12-60 month age group,the WHO algorithm gave a sensitivity of 95.7%±7.6% at a specificity of 9.8%±13.1%,while our corresponding sensitivity and specificity were 94.0%±12.1% and 74.0%±23.3%,respectively (using fever,number of days with cough,heart rate and chest in-drawing).Conclusions:The WHO algorithm can be improved through mathematical analysis of clinical observations and measurements routinely made in the *** method is simple and easy to implement on a mobile *** method allows the freedom to pick the best model in any arbitrary field scenario (e.g.,when an oximeter is not available).

关键词： developing countries diagnosis logistic regression modelling pneumonia

Interleaving Guidance in Evolutionary Multi-Objective Optimization

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Journal of Computer Science & Technology 2008年第1期23卷 44-63页

作者： Lam Thu Bui Kalyanmoy Deb Hussein A.Abbass Daryl Essam The Artificial Life and Adaptive Robotics Laboratory School of ITEEADFAUniversity of New South Wales Canberra Mechanical Engineering Department Indian Institute of TechnologyKanpur

In this paper, we propose a framework that uses localization for multi-objective optimization to simultaneously guide an evolutionary algorithm in both the decision and objective spaces. The localization is built using a limited number of adaptive spheres （local models） in the decision space. These spheres axe usually guided, using some direction information, in the decision space towards the areas with non-dominated solutions. We use a second mechanism to adjust the spheres to specialize on different parts of the Paxeto front by using a guided dominance technique in the objective space. Through this interleaved guidance in both spaces, the spheres will be guided towards different parts of the Paxeto front while also exploring the decision space efficiently. The experimental results showed good performance for the local models using this dual guidance, in comparison with their original version.

关键词： evolutionary multi-objective optimization guided dominance local models

A Web-based system enabling the integration,analysis,and 3D sub-surface visualization of groundwater monitoring data and geological models

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International Journal of Digital Earth 2016年第2期9卷 197-214页

作者： Jane Hunter Charles Brooking Lucy Reading Sue Vink school of Information Technology and Electrical Engineering(itee) The University of QueenslandBrisbaneQLDAustralia Centre for Water in the Minerals Industry(CWIMI) The University of QueenslandBrisbaneQLDAustralia

The 3D Water Chemistry Atlas is an intuitive,open source,Web-based system that enables the three-dimensional(3D)sub-surface visualization of ground water monitoring data,overlaid on the local geological model(formation and aquifer strata).This paper firstly describes the results of evaluating existing virtual globe technologies,which led to the decision to use the Cesium open source WebGL Virtual Globe and Map Engine as the underlying *** it describes the backend database and search,filtering,browse and analysis tools that were developed to enable users to interactively explore the groundwater monitoring data and interpret it spatially and temporally relative to the local geological formations and aquifers via the Cesium *** result is an integrated 3D visualization system that enables environmental managers and regulators to assess groundwater conditions,identify inconsistencies in the data,manage impacts and risks and make more informed decisions about coal seam gas extraction,waste water extraction,and water reuse.

关键词： 3D sub-surface visualization groundwater geological model

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基于社会网络可视化分析的数据挖掘(英文)

软件学报 2008年第8期19卷 1980-1994页

作者：杨育彬李宁张瑶南京大学计算机软件新技术国家重点实验室江苏南京210093 school of itee UNSW@ADFACanberraAustralia 南京大学金陵学院江苏南京210093

把社会等复杂系统看作网络的思想由来已久.利用社会网络分析的方法,能够对各种社会关系进行精确的量化表征和分析。从而揭示其结构,对一系列当代社会的现象进行更加深入而具体的解释.结合社会网络可视化分析和数据挖掘的理论与方法,引... 详细信息

把社会等复杂系统看作网络的思想由来已久.利用社会网络分析的方法,能够对各种社会关系进行精确的量化表征和分析。从而揭示其结构,对一系列当代社会的现象进行更加深入而具体的解释.结合社会网络可视化分析和数据挖掘的理论与方法,引入相关的地理信息,对包含1980-2002年间世界范围内1417例恐怖袭击事件的数据库进行数据分析,以这些恐怖袭击事件各要素节点之间关系作为基本分析单位,对恐怖组织之间的活动模式和发展特点等内在规律进行挖掘与解释,得出有意义的结果.提出的方法可以有效地推广应用于蛋白质结构分析、生物基因分析以及各类社会问题的分析过程.

关键词：社会网络分析数据挖掘网络动态模式网络发展模式

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电力CPS的架构及其实现技术与挑战

电力系统自动化 2010年第16期34卷 1-7页

作者：赵俊华文福拴薛禹胜李雪董朝阳浙江大学电气工程学院浙江省杭州市310027 国网电力科学研究院/南京南瑞集团公司江苏省南京市210003 school of itee The University of Queensland 香港理工大学电机工程学系

引入前沿信息技术并把电力系统和信息系统进行深度融合是实现电力系统智能化的关键。信息物理融合系统(cyber physical system,CPS)是通过3C(computation,communication,control)技术将计算、网络和物理环境融为一体的多维复杂系统,通... 详细信息

引入前沿信息技术并把电力系统和信息系统进行深度融合是实现电力系统智能化的关键。信息物理融合系统(cyber physical system,CPS)是通过3C(computation,communication,control)技术将计算、网络和物理环境融为一体的多维复杂系统,通过多技术有机融合,实现大型工程系统的实时感知、动态控制和信息服务,具有非常广阔的应用前景,因而在国际上受到了普遍重视。在此背景下,基于CPS概念并结合电力系统特点,提出建立电力CPS的思路和框架。首先,概述了CPS的概念、主要功能和技术特征。之后,构造了电力CPS的架构和主要组成部分,指出了实现电力CPS的若干关键技术。最后,从基础理论、建模方法、仿真算法、安全性分析、可靠性分析、系统设计与规划、运行调度、标准化等方面讨论了电力CPS研究中所面对的主要挑战。

关键词：信息物理融合系统电力信息物理融合系统电力系统智能电网

Property transformation under specification change

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Frontiers of Computer Science 2011年第1期5卷 1-13页

作者： Zheng Fu (1) zhengfu@itee.uq.edu.au Graeme Smith (1) school of Information Technology and Electrical Engineering The University of Queensland QLD Australia

Formal specifications of software systems need to evolve in many ways during system development. Not only are changes required to refine the specification toward an implementation, they are also required in response to changes in requirements, or to incorporate different aspects of the system, e.g., fault tolerance or timing, initially ignored in order to simplify reasoning. This paper presents an approach for evolving Z specifications by the step-wise application of a number of simple rules. These rules not only document the evolution of the specification, but also make precise how properties of the system evolve with the specification. Hence, reasoning about these properties performed on the original specification need not be repeated on the new specification.

关键词： formal methods Z refinement temporallogic system property