检索结果-内蒙古大学图书馆

作者： Wu, Song Tao, Zhiheng Fan, Hao Huang, Zhuo Zhang, Xinmin Jin, Hai Yu, Chen Cao, Chun National Engineering Research Center for Big Data Technology and System Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China State Key Laboratory for Novel Software Technology Department of Computer Science and Technology Nanjing University Nanjing China

Elastic scaling in response to changes on demand is a main benefit of serverless computing. When bursty workloads arrive, a serverless platform launches many new containers and initializes function environments (known as cold starts), which incurs significant startup latency. To reduce cold starts, platforms usually pause a container after it serves a request, and reuse this container for subsequent requests. However, this reuse strategy cannot efficiently reduce cold starts because the schedulers are agnostic of container lifecycle. For example, it may ignore soon available containers or evict soon needed containers. We propose a container lifecycle-aware scheduling strategy for serverless computing, CAS. The key idea is to control distribution of requests and determine creation or eviction of containers according to different lifecycle phases of containers. We implement a prototype of CAS on OpenWhisk. Our evaluation shows that CAS reduces 81% cold starts and therefore brings a 63% reduction at 95th percentile latency compared with native scheduling strategy in OpenWhisk when there is worker contention between workloads, and does not add significant performance overhead. © 2021 John Wiley & Sons Ltd.

关键词： Containers

来源：评论

学校读者我要写书评

暂无评论

Using Quantile Regression Approach to Analyze Price Movements of Agricultural Products in China

引用

Journal of Integrative Agriculture 2012年第4期11卷 674-683页

作者： LI Gan-qiong XU Shi-wei LI Zhe-min SUN Yi-guo DONG Xiao-xia Agricultural Information Institute Chinese Academy of Agricultural Sciences/Key Laboratory of Agri-information Service Technology Ministry of Agriculture/Key Laboratory of Digital Agricultural Early Warning Technology and System Chinese Academy of Agricultural Sciences Beijing 100081 P.R. China Department of Economics University of Guelph Ontario N1G2W1 Canada

This paper studies how the price movements of pork,chicken and egg respond to those of related cost factors in short terms in Chinese *** employ a linear quantile approach not only to explore potential data heteroscedasticity but also to generate confidence bands for the purpose of price stability *** then evaluate our models by comparing the prediction intervals generated from the quantile regression models with in-sample and out-of-sample *** monthly data from January 2000 to October 2010,we observed these findings：（i） the price changes of cost factors asymmetrically and unequally influence those of the livestock across different quantiles;（ii） the performance of our models is robust and consistent for both in-sample and out-of-sample forecasts;（iii） the confidence intervals generated from 0.05th and 0.95th quantile regression models are good methods to forecast livestock price fluctuation.

关键词： cost factors agricultural products forecasting price movements quantile regression model

来源：评论

学校读者我要写书评

暂无评论

A new neural-based market prediction computing approach

A new neural-based market prediction computing approach

引用

5th International Conference on Natural Computation, ICNC 2009

作者： Zhang, Degan Lin, Chen Li, Nqing Zhao, Dexin Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9780769537368

A new kind of neural-based market prediction computing approach for electronic commerce has beenpresented by our research group in this paper. Our purpose is to suggest a successful and efficient prediction method of risk assessment for the clients to get substantial profits in competitive commerce markets of electronic commerce. In this paper we study the benefits of combining two layered feedforward neural networks trained by back propagation on an identical data set. In this case, network diversity was achieved by the inherent randomness associated with the back-propagation algorithm's initialization of a network's weights. By case experiments of risk assessment of electronic commerce, our technique has been tested effectively. © 2009 IEEE.

关键词： Electronic commerce

来源：评论

学校读者我要写书评

暂无评论

Synchronization of delayed complex-valued networks via aperiodically intermittent pinning control

Synchronization of delayed complex-valued networks via aperi...

引用

International Conference on Information and Automation (ICIA)

作者： Xiwei Liu Department of Computer Science and Technology The Key Laboratory of Embedded System and Service Computing Shanghai China

ISBN: (纸本)9781467391054

In this paper, the synchronization problem for linearly coupled complex networks is investigated, which is denoted by ordinary differential equations with complex-values. The coupling topology can be asymmetric, and the time delay also exists in the network model. By pinning some external aperiodically intermittent control on the network nodes, we will prove that under some conditions, the complete synchronization will be finally realized exponentially. Moreover, applying the adaptive technique on the coupling strength, we will also present an adaptive rule, whose validity is rigorously proved. Finally, some numerical simulations will be given to illustrate the correctness of these obtained results.

关键词： Synchronization Delay effects Couplings Adaptation models Mathematical model Complex networks Delays

来源：评论

学校读者我要写书评

暂无评论

Outlier detection for learning-based optimizing compiler

Outlier detection for learning-based optimizing compiler

引用

International Conference on Frontier of Computer Science and technology

作者： Long, Shun Zhu, Weiheng Department Ofcomputer Science JiNan University Guangzhou China Key-Laboratory Ofcomputer System and Architecture Institute of Computing Technology Chinese Academy of Sciences China

ISBN: (纸本)9780769541396

Modern compilers use machine learning to find from their prior experience useful heuristics for new programs encountered in order to accelerate the optimization process. However, prior experience might not be applicable for outlier programs with unfamiliar code features. This paper presents a Reverse K-nearest neighbor (RKNN) algorithm based approach for outlier detection. The compiler can therefore launch a search within an optimization space when outlier programs are encountered, or directly apply its experience to non-outliers. Preliminary experimental results demonstrate the effectiveness of the approach. © 2010 IEEE.

关键词： Statistics

来源：评论

学校读者我要写书评

暂无评论

Quasi-synchronization for delayed systems with parameter mismatches via aperiodically intermittent control

Quasi-synchronization for delayed systems with parameter mis...

引用

International Conference on systems and Informatics (ICSAI)

作者： Xiwei Liu Ping Li Yuan Xu Ying Liu Department of Computer Science and Technology Key Laboratory of Embedded System and Service Computing Shanghai China

ISBN: (纸本)9781479954599

Quasi-synchronization is an important type of synchronization because of the parameter mismatches in the real world, so we will investigate it for a delayed network, which is master-slave coupled. By applying the aperiodically and nonlinearly intermittent control on the network, and assuming the time delay is varying, we will present some useful criteria for exponential quasi-synchronization. The main difference of this paper with previous works is that the intermittent mode is aperiodic while that in previous works is periodic. Finally, simulations are also given to show its validity.

关键词： Synchronization Mathematical model Delay effects Numerical models Observers Equations Educational institutions

来源：评论

学校读者我要写书评

暂无评论

Fast adaptive interpolation filter algorithm for bi-predicted frame in video coding

Fast adaptive interpolation filter algorithm for bi-predicte...

引用

2nd International Conference on Multimedia technology, ICMT 2011

作者： Gao, Huichao Cen, Feng Xu, Weisheng Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 20092 China College of Electronics and Information Engineering Tongji University Shanghai 20092 China

ISBN: (纸本)9781612847740

This paper proposes a novel adaptive interpolation filter (AIF) to reduce computational complexity and bit-rate of video coding. In the proposed AIF, the filter coefficients of B frames, which are predicted from those of adjacent P frames with a novel parabolic model, are unnecessary to transmit. Experimental results show that the coding complexity is reduced by 40.22% with no penalty on coding efficiency and 1.59% bitrate reduction is achieved at low bit-rate against conventional AIF. © 2011 IEEE.

关键词： Image coding

来源：评论

学校读者我要写书评

暂无评论

The detection of IRC botnet based on abnormal behavior

The detection of IRC botnet based on abnormal behavior

引用

2010 2nd International Conference on MultiMedia and Information technology, MMIT 2010

作者： Zilong, Wang Jinsong, Wang Wenyi, Huang Chengyi, Xia Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9780769540085

Botnet is one of the major security threats to Internet. In this paper, botnet communication and attack patterns were introduced, and the discovery method of botnet based on abnormal behavior was studied. For the current botnet, mainly based on IRC protocol, an automatic identification system is designed to help analyze and dispose botnet effectively. © 2010 IEEE.

关键词： Network security

来源：评论

学校读者我要写书评

暂无评论

Toward the First SDN Programming Capacity Theorem on Realizing High-Level Programs on Low-Level Datapaths

Toward the First SDN Programming Capacity Theorem on Realizi...

引用

2018 IEEE Conference on Computer Communications, INFOCOM 2018

作者： Leet, Christopher Wang, Xin Richard Yang, Y. Aspnes, James Department of Computer Science Yale University United States Department of Computer Science Tongji University China Key Laboratory of Embedded System and Service Computing Ministry of Education China

ISBN: (纸本)9781538641286

High-Ievel programming and programmable data paths are two key capabilities of software-defined networking (SDN). A fundamental problem linking these two capabilities is whether a given high-level SDN program can be realized onto a given low-level SDN datapath structure. Considering all high-level programs that can be realized onto a given datapath as the programming capacity of the datapath, we refer to this problem as the SDN data path programming capacity problem. In this paper, we conduct the first study on the SDN datapath programming capacity problem, in the general setting of high-level, datapath oblivious, algorithmic SDN programs and state-of-art multi-table SDN data path pipelines. In particular, considering datapath-oblivious SDN programs as computations and datapath pipelines as computation capabilities, we introduce a novel framework called SDN characterization junctions, to map both SDN programs and datapaths into a unifying space, deriving the first rigorous result on SDN datapath programming capacity. We not only prove our results but also conduct realistic evaluations to demonstrate the tightness of our analysis. © 2018 IEEE.

关键词： Computation theory

来源：评论

学校读者我要写书评

暂无评论

Spike sorting based on radial basis function network with overlap decomposition

Spike sorting based on radial basis function network with ov...

引用

2010 6th International Conference on Natural Computation, ICNC'10

作者： Dai, Min Hu, Su-Rui Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology 300191 Tianjin China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology 300191 Tianjin China

ISBN: (纸本)9781424459612

Spike sorting is the essential step in analyzing recording spike signals for studying information processing mechanisms within the nervous system. Overlapping is one of the serious problems in the spike sorting of multi-channel recordings. In this paper, a modified radial basis function (RBF) network is proposed to decompose the overlapped signals and separate spikes within the same RBF network. A modified radial basis function based on Gaussian function is employed in the method to improve the accuracy of overlap decomposition. In addition, the improved constructing algorithm reduces the calculation cost by taking advantage of the symmetry of the RBF network. The performance of the presented method is tested at various signal-to-noise ratio levels based on simulation data coming from the University of Leicester. Experiment results show that our method successfully resolves the fully overlapping problem and has better accuracy comparing with the Gaussian function. © 2010 IEEE.

关键词： Radial basis function networks

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：