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2010 International Conference on Machine Learning and Cybernetics最新文献

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A neural netwok based approach to detect influenza epidemics using search engine query data 基于神经网络的基于搜索引擎查询数据的流感流行检测方法
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580851
Wei Xu, Zhen-Wen Han, Jian Ma
Influenza epidemics detection is critically important in recent years because there is a significant economic and public health impact associated with the influenza epidemic. Influenza epidemics detection attracts much attention from governments, organizations, and research institutes, and recently, a novel method using search engine query data to detect influenza activities was presented by Google. In this paper, a data mining based framework using web data is introduced for influenza epidemics detection. Under the framework, a neural network based approach using search engine query data is developed to detect influenza activities. In the proposed method, an automated feature selection model is firstly constructed to reduce the dimension of the query data. Secondly, various neural networks are employed to model the relationship between influenza-like illness data and query data. Thirdly, an optimal neural network is selected as the detector by using the cross-validation method. Finally, the selective neural network detector with the best feature subset is used to detect influenza activities. Experimental results show that the proposed method can outperform traditional statistical models and other models used in the experiments in terms of accuracy. These findings imply that data mining, such as neural network method, can be used as a promising tool to detect influenza activities.
近年来,流感流行检测至关重要,因为流感流行会对经济和公共卫生产生重大影响。流感疫情检测受到政府、组织和研究机构的广泛关注,最近,谷歌提出了一种利用搜索引擎查询数据来检测流感活动的新方法。本文介绍了一种基于web数据挖掘的流感疫情检测框架。在此框架下,开发了一种基于神经网络的方法,利用搜索引擎查询数据来检测流感活动。该方法首先构建自动特征选择模型,对查询数据进行降维处理;其次,利用各种神经网络对流感样疾病数据与查询数据之间的关系进行建模。再次,采用交叉验证方法选择最优神经网络作为检测器;最后,利用具有最佳特征子集的选择性神经网络检测器检测流感活动。实验结果表明,该方法在精度上优于传统统计模型和实验中使用的其他模型。这些发现表明,数据挖掘,如神经网络方法,可以作为一种有前途的工具来检测流感活动。
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引用次数: 21
Data mining-based modeling and application in the energy-saving analysis of large coal-fired power units 基于数据挖掘的大型燃煤机组节能分析建模及应用
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580941
Yongping Yang, Ning-Ling Wang, Zhi-Wei Zhang, De-gang Chen
The large-sized coal-fired power units characterizes as wide thermodynamic scale, huge equipment, large flow and mass, which results in distinct nonlinear feature in energy transmission, conversion and dissipation for specific equipment, system and process. There's highly coupling and nonlinear correlation between the energy consumption in power generation and the external environment, resources and load demand. A data mining-based modeling methodology for complex system was proposed in this paper, reflecting the influences of boundary constraints and implementing the reconstruction of operation states. Based on this, a Spatial-temporal Distribution Model of Energy Consumption at Overall Conditions (SDMEC) for large coal-fired power units was built based on ε-SVR data mining and verified by the practical operation data of thermal power units. The result shows that the ε-SVR-based model is easy to implement and explicit to interpret with high accuracy.
大型燃煤发电机组具有热力规模大、设备庞大、流量大、质量大的特点,这就导致具体设备、系统和过程的能量传递、转换和耗散具有明显的非线性特征。发电能耗与外部环境、资源和负荷需求之间存在高度耦合和非线性相关关系。提出了一种基于数据挖掘的复杂系统建模方法,该方法反映了边界约束的影响,实现了系统运行状态的重构。在此基础上,基于ε-SVR数据挖掘,建立了大型燃煤机组整机能耗时空分布模型,并通过火电机组实际运行数据进行了验证。结果表明,基于ε- svr的模型实现简单,解释清晰,精度高。
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引用次数: 4
Wind erosion gradient patterns of Mongolian Plateau 蒙古高原风蚀梯度格局
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580665
Y. Qi, Jiyuan Liu, Huading Shi, D. Zhuang, Yunfeng Hu
Wind erosion is one of the major environmental problems in semi-arid and arid regions. Here we established a transect from northwest (Tariat, Mongolia) to southeast (Xilingol, Inner Mongolia of China) across the Mongolian Plateau, and estimated the soil wind erosion gradient patterns by using the 137Cs tracing technique. In the Mongolia section, the wind erosion rate increased gradually with vegetation type and climatic regimes, controlled by physical factors such as annual precipitation and vegetation coverage, etc. While in the Inner Mongolia section, the wind erosion rates were thrice as much as those of Bayannur of Mongolia. Besides the physical factors, higher population density and livestock carrying level should be responsible for the higher wind erosion rates in Inner Mongolia.
风蚀是半干旱和干旱区的主要环境问题之一。在此基础上,建立了从西北(蒙古塔里喀特)到东南(中国内蒙古锡林郭勒)横跨蒙古高原的样带,利用137Cs示踪技术估算了土壤风蚀梯度格局。蒙古段风蚀率受年降水量、植被覆盖度等物理因素控制,随植被类型和气候条件的变化而逐渐增大。内蒙古段的风蚀率是蒙古巴彦淖尔的3倍。除自然因素外,较高的人口密度和牲畜携带水平是造成内蒙古风蚀率较高的主要原因。
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引用次数: 0
Principal component analysis of nucleosome DNA conformational data 核小体DNA构象数据的主成分分析
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580721
Xi Yang, Hong Yan
The deformation mechanism of double helical DNA can be elucidated by the correlations between various conformational properties of its constituent dinucleotides. In this paper, we study the structural features of nucleosomes by performing principle component analysis on structural parameters within three categories: sugar-phosphate backbone, base pairs and base steps. The aim of this study is to find out the coupling modes of these conformational properties which are probably responsible for the special conformational settings of dinucleotides in nucleosomes. For comparison, a number of B-form oligomers are selected and subjected to PCA. Analysis of similarity and difference between nucleosomes and oligomers is implemented. The result shows that nucleosomes have a series of unique coupling patterns and reveals the multidimension-coordinated deformation mechanisms.
双螺旋DNA的变形机制可以通过其组成的二核苷酸的各种构象性质之间的相关性来阐明。本文通过对糖-磷酸主链、碱基对和碱基步骤三大类结构参数进行主成分分析,研究了核小体的结构特征。本研究的目的是找出这些构象性质的耦合模式,这可能是核小体中二核苷酸特殊构象设置的原因。为了比较,选择了一些b型低聚物并进行PCA。对核小体和低聚物进行了相似性和差异性分析。结果表明,核小体具有一系列独特的耦合模式,揭示了核小体的多维协调变形机制。
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引用次数: 0
The sperm video segmentation based on dynamic threshold 基于动态阈值的精子视频分割
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580766
Z. Xuan, Wang Yan
In this paper, the method of threshold segmentation is introduced, which focus on the image characteristics of the sperm video, base on the dynamic threshold and combine with region growing arithmetic. The method is based on the movement characteristics and the brightness characteristics of the objective sperm to distinct, and then uses the region growing algorithm to calculate the sperm region, finally according to this gray area to determine the threshold. The results show that this method has better performance to divide the sperm goal.
本文针对精子视频的图像特征,提出了一种基于动态阈值并结合区域增长算法的阈值分割方法。该方法是根据客观精子的运动特征和亮度特征进行区分,然后利用区域生长算法计算精子区域,最后根据该灰色区域确定阈值。结果表明,该方法具有较好的精子分裂效果。
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引用次数: 11
A novel neuro-fuzzy classification system design by a species-based hybrid algorithm 一种基于物种混合算法的神经模糊分类系统设计
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580807
Ching-Hung Lee, Hsin-Wei Chiu, Chung-Ta Li
In this paper, we propose a novel neuro-fuzzy classification system by a species-based hybrid of electromagnetism-like mechanism and back-propagation algorithms (SEMBP). The neuro-fuzzy classification system is constructed by an interval type-2 fuzzy neural system with asymmetric membership functions (AIT2FNS). The hybrid algorithm SEMBP combines the advantages of EM and BP algorithms. Three classification problems: the XOR data set, the breast cancer data set, and the Iris data set are used to illustrate the performance of our approach.
本文提出了一种基于物种的类电磁机制和反向传播算法(SEMBP)混合的神经模糊分类系统。该神经模糊分类系统采用具有非对称隶属函数的区间2型模糊神经系统(AIT2FNS)构造。SEMBP混合算法结合了EM算法和BP算法的优点。三个分类问题:XOR数据集、乳腺癌数据集和虹膜数据集被用来说明我们的方法的性能。
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引用次数: 1
Gene time series data clustering based on continuous representations and an energy based similarity measure 基于连续表示和能量相似性度量的基因时间序列数据聚类
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580501
Weifeng Zhang, Chao-Chun Liu, Hong Yan
Gene temporal expression data clustering has been widely used to study dynamic biological systems. However, most temporal gene expression data often contain noise, missing data points, and non-uniformly sampled time points, which imposes challenges for traditional clustering methods of extracting meaningful information. To improve the clustering performance, we introduce a novel clustering approach based on the continuous representations and an energy based similarity measure. The proposed approach models each gene expression profile as a B-spline expansion, for which the spline coefficients are estimated by regularized least squares scheme on the observed data. After fitting the continuous representations of gene expression profiles, we use an energy based similarity measure to take into account the temporal information and the relative changes of time series. Experimental results show that the proposed method is robust to noise and can produce meaningful clustering results.
基因时间表达数据聚类已广泛应用于动态生物系统的研究。然而,大多数时间基因表达数据通常包含噪声、缺失数据点和非均匀采样时间点,这给传统聚类方法提取有意义信息带来了挑战。为了提高聚类性能,我们引入了一种基于连续表示和基于能量的相似性度量的聚类方法。该方法将每个基因表达谱建模为一个b样条展开,用正则化最小二乘法估计样条系数。在拟合基因表达谱的连续表示后,我们使用基于能量的相似性度量来考虑时间信息和时间序列的相对变化。实验结果表明,该方法对噪声具有较强的鲁棒性,能得到有意义的聚类结果。
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引用次数: 2
A trusted computing environment model in cloud architecture 云架构中的可信计算环境模型
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580769
Xiao-yong Li, Lidai Zhou, Yong Shi, Yu Guo
The main difference between cloud computing and traditional enterprise internal IT services is that the owner and the user of cloud IT infrastructures are separated in cloud. This change requires a security duty separation in cloud computing. Cloud service providers (CSP) should secure the services they offer and cannot exceed the customers' authorities. Currently, no traditional information security products can meet this requirement. A multi-tenancy trusted computing environment model (MTCEM) is designed for IaaS delivery model, and its purpose is to assure a trusted cloud infrastructure to customers. MTCEM presents a dual level transitive trust mechanism and supports a security duty separation function simultaneously. With MTCEM, CSP and customers can cooperate to build and maintain a trusted cloud computing environment. MTCEM can be used to improve customers' confidence on cloud computing. The prototype of MTCEM shows that it has low impact on system performance and it is technically and practically feasible.
云计算与传统企业内部IT服务的主要区别在于,云IT基础设施的所有者和用户在云中是分离的。这种变化需要云计算中的安全职责分离。云服务提供商(CSP)应该保护他们提供的服务,不能超出客户的权限。目前,没有传统的信息安全产品能够满足这一要求。多租户可信计算环境模型(MTCEM)是为IaaS交付模型而设计的,其目的是确保为客户提供可信的云基础设施。MTCEM提供了一种双层可传递信任机制,同时支持安全职责分离功能。通过MTCEM, CSP和客户可以合作构建和维护一个可信的云计算环境。MTCEM可以用来提高客户对云计算的信心。实验结果表明,MTCEM对系统性能影响较小,在技术上和实践上都是可行的。
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引用次数: 107
Online topic detection and tracking of financial news based on hierarchical clustering 基于层次聚类的财经新闻在线话题检测与跟踪
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580677
Xiangying Dai, Qingcai Chen, Xiaolong Wang, Jun Xu
In this paper, we apply TDT technology to the vertical search engine in the financial field. The returned results are grouped into several topics with the stock as the unit. Then we show the topics to the users in time series order. As a result, users can easily learn about the important events which belong to a stock. Moreover, the causes and the effects of these events can also be found out easily. We improve the common agglomerative hierarchical clustering algorithm based on average-link method, which is then used to implement the retrospective topic detection and the online topic detection of news stories of the stocks. Additionally, the improved single pass clustering algorithm is employed to accomplish topic tracking. We consider that the feature terms which occur in the title of a news story contribute more during the similarity calculation and increase their corresponding weights. Experiments are performed on two datasets which are annotated by human judgment. The results show that the proposed method can effectively detect and track the online financial topics.
本文将TDT技术应用于金融领域的垂直搜索引擎。返回的结果以股票为单位分组到几个主题中。然后按时间序列顺序向用户显示主题。因此,用户可以很容易地了解属于股票的重要事件。此外,这些事件的原因和影响也很容易发现。基于平均链接法对常用的聚类分层聚类算法进行改进,并将其应用于股票新闻故事的回顾性话题检测和在线话题检测。此外,采用改进的单次聚类算法完成主题跟踪。我们认为在新闻标题中出现的特征项在相似度计算中贡献更大,并增加其相应的权重。实验在两个人工判断标注的数据集上进行。结果表明,该方法可以有效地检测和跟踪在线金融主题。
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引用次数: 69
RFID indoor positioning using RBFNN with L-GEM 利用RBFNN结合L-GEM进行RFID室内定位
Pub Date : 2010-07-11 DOI: 10.1109/ICMLC.2010.5580925
Hai-Lan Ding, Wing W. Y. Ng, P. Chan, Dong-Liang Wu, Xiao-Ling Chen, D. Yeung
As pervasive computing becomes more popular, the importance of context-aware applications increases. Physical location of user is important to context-aware pervasive application providers. RFID is one of the most widely adopted wireless positioning technologies. Compared to other wireless technologies, e.g. GPS and WLAN, RFID is particularly suitable for indoor positioning. Existing methods usually assume a constant environment for the application field. However, this may not be true in many cases. For example, warehouse may have different goods yielding different interference to RFID signal in different days. This paper proposes a new method to estimate locations of objects based on RFID. The indoor positioning with RFID reader based on the received signal strength and passive UHF tags as reference tags. A Radial Basis Function Neural Network (RBFNN) trained via a minimization of the Localized Generalization Error (L-GEM) is adopted to learn the object location based on received RFID signals. The L-GEM provides an estimate on the generalization capability of the RBFNN which is important to locate future unseen samples correctly in different yet similar environments. Simulation experiments show that the proposed method outperforms existing RFID based indoor positioning method.
随着普及计算变得越来越流行,上下文感知应用程序的重要性也在增加。用户的物理位置对于上下文感知的普及应用程序提供商非常重要。RFID是目前应用最广泛的无线定位技术之一。与GPS和WLAN等其他无线技术相比,RFID特别适用于室内定位。现有的方法通常假定应用领域的环境是恒定的。然而,在许多情况下,这可能不是真的。例如,仓库可能有不同的货物,在不同的日子对RFID信号产生不同的干扰。提出了一种基于RFID的物体位置估计方法。室内定位采用RFID读写器根据接收到的信号强度和无源超高频标签作为参考标签。采用最小化局部泛化误差(L-GEM)训练的径向基函数神经网络(RBFNN),根据接收到的RFID信号学习目标位置。L-GEM提供了对RBFNN泛化能力的估计,这对于在不同但相似的环境中正确定位未来未见过的样本非常重要。仿真实验表明,该方法优于现有的基于RFID的室内定位方法。
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引用次数: 18
期刊
2010 International Conference on Machine Learning and Cybernetics
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