IP网络智能感知能力的构建与分析

聚焦在运营商IP网络中构建智能感知能力。首先对多层面的IP网络感知技术及其现状进行分析,其次对大规模网络中应用层感知技术的部署进行探讨,最后对运营商网络中构建完善的智能感知能力的若干关键问题进行剖析,力求从实践、可操作的视角使读者对感知体系的构建有所启迪。     

基于Java的图像排版系统的设计

利用Java提供的图像处理技术,实现对图像的规则排版.分析图像排版系统的用户需求,采用工程化的思想设计系统中的类及其功能.提出排版时图像显示大小和显示位置的计算方法.给出排版结果的绘制过程,讨论排版结果的输出技术,解决显示器与打印机DPI不一致的问题.     

A two-scale attention model for intelligent evaluation of yarn surface qualities with computer vision

In this paper, an intelligent computer method for yarn surface grading is developed to analyze yarn board image and objectively evaluate yarn quality according to ASTM D2255.Both statistical features measuring the overall performance and relative features measuring salient regions are elaborately designed and selected. Statistical features are extracted to characterize the yarn body and hairiness. In relative feature extraction, a two-scale attention model is proposed and developed, which can fully imitate human attention at different observation distances for the whole and detailed yarn information. Global and individual Probabilistic Neural Networks (PNNs) are then designed for yarn quality evaluation based on eight-grade and five-grade classifications. A database, covering eight yarn densities (Ne7~ Ne80) and different surface qualities, was constructed with 296 yarn board images for the evaluation. The accuracy for eight- and five-grade global PNNs are 92.23 and 93.58%, respectively, demonstrating a good classification performance of the proposed method.     

Startup comparison for message passing libraries with DTM on linux clusters

In clusters containing heterogeneous systems, message passing libraries (distributed computing tools) are employed for harnessing the computing and other resources. Task is submitted to a tool and the actual execution is carried out on aggregated network resources. Tools take care of scheduling, distributing subtasks and gathering results along with synchronization and message exchange requirements. They need initialization and synchronization routines for the submitted task. These tools also provide many other features like transparency, fault tolerance and load balancing. Some times all these features or initialization may not be required. The aim of tool designers should be to provide quality performance with add-on request initialization and feature provision. Initialization routines and special features provision take their own time over core distributed computing, affecting overall computational cost. In this paper a two purpose tool (Distributed Task Measure: DTM) is implemented. DTM is primarily used for placing other distributed computing tools on a performance index, judging their startup and performance. DTM may also serve to achieve macro level parallelization where requirements are such.     

基于DPI的P2P流量控制系统的设计与实现

基于对P2P通信进行控制的迫切需求,论文给出了一种基于DPI的P2P流量控制系统的设计与实现。首先描述了识别P2P通信的一些技术,在此基础上,对P2P流量综合控制模型进行了分析;再结合实际情况给出了一种基于DPI的流量控制模型,并给出了其简单实现;最后对该模型进行了性能分析和评价。实验证明,该实现对于控制P2P流量是非常有效的。     

基于DPI和机器学习方法传输层检测的P2P流量识别模型

如何快速而准确的检测出P2P流量,是如今网络管理中的1个重要的问题.现在常见的检测方法有基于端口检测法,DPI深度包检测,以及根据传输层特征来检测.DPI深度包检测方法需要及时跟新特征库,对于加密协议无法识别等缺陷限制了其应用.机器学习的传输层检测方法通过分析流的统计特征来检测P2P流量.较之DPI,该方法能检测出DP...     

校园网管理中基于移动Agent数据采集问题的研究与设计

传统网络管理中,以轮询和陷阱实现的数据采集会造成网络带宽的极大浪费,也会带来时延和拥塞等问题。为解决此问题,本文以校园网为基础,设计了基于移动Agent的数据采集系统。主要采用了以DPI/RDPI协议实现移动Agent与SNMP代理互操作、基于移动Agent实现数据库的访问等技术。这样的设计能很好地减轻网管站的计算负载,减少大量信息交换对带宽的要求。     

运营商统一DPI建设方案优化研究

对运营商统一DPI系统应用场景做阐述,并对建设中出现的问题深入分析,提出了基于统--DPI设备的系统优化建设思路。通过同资源池、大数据平台相结合的优化方案,实现资源整合与共享。     

基于智能管道业务的精准营销系统实现方案

介绍一种网络营销的实现方案,该方案通过智能管道业务中的网络报文解析技术来获知用户网络访问行为数据。网站等内容提供商统计分析后,可根据用户网络行为进行精准营销,对目前智能管道相关的增值业务开发有借鉴意义。     

提升3G用户感知的差异化运营新思路

文章针对用户行为、业务类型、用户分布等特性,提出了＂救低速、防抖动、控业务、增加速＂的3G网络优化思路,通过调整空口调度策略,PDSN分等级、分业务进行限速,均衡用户带宽资源占用,并引入加速平台等一系列差异化运营手段,在提升整网3G用户速率体验和网络资源利用率的同时,确保了用户感知的平稳。