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基于网络的室内环境虚拟漫游系统

系统仿真学报 2002年第12期14卷 1659-1662,1670页

作者：杨猛汪国平董士海中国科学院计算技术研究所智能信息处理开放实验室北京大学计算机科学技术系北京100871

提出了一种新的基于客户端/服务器架构的可用于室内环境虚拟漫游的实现方案。该方法首先根据面片的属性和用户提供的阈值,将场景中的面片进行剖分,建立面片之间的链接,并构造场景面片的 q-j 面片链接表,然后对场景进行预绘制,并把绘制... 详细信息

提出了一种新的基于客户端/服务器架构的可用于室内环境虚拟漫游的实现方案。该方法首先根据面片的属性和用户提供的阈值,将场景中的面片进行剖分,建立面片之间的链接,并构造场景面片的 q-j 面片链接表,然后对场景进行预绘制,并把绘制的结果保存在全景图中,漫游过程中利用全景图合成新视点的视图。存储全景图所需要的数据结构不大,漫游中只需要传递少量面片,适用于网上虚拟漫游系统。

关键词：室内环境虚拟漫游系统场景计算机网络

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最大目标频繁模式挖掘算法研究

计算机工程与应用 2004年第33期40卷 184-188页

作者：李清勇秦亮曦施智平史忠植中科院计算所智能信息处理重点实验室北京100080 中国科学院研究生院北京100039

传统的频繁模式挖掘算法往往会得到成百上千的结果模式,面对繁多的频繁模式用户通常要经过“二次挖掘”才能得到有用的目标模式。怎样根据用户需求直接挖掘用户感兴趣的目标模式是该文的研究目标。文章在FP-树的基础上设计了紧缩的、非... 详细信息

传统的频繁模式挖掘算法往往会得到成百上千的结果模式,面对繁多的频繁模式用户通常要经过“二次挖掘”才能得到有用的目标模式。怎样根据用户需求直接挖掘用户感兴趣的目标模式是该文的研究目标。文章在FP-树的基础上设计了紧缩的、非冗余的TFP-树,它能有效过滤与目标模式无关的项和事务,而仅保留与目标模式相关的信息,缩小TFP-树的大小规模。同时根据TFP-树的规律和特点,笔者设计了最大目标频繁模式挖掘算法,算法的结果模式具有以下两个特点:(1)满足用户需求的目标模式;(2)最大模式。该实验结果验证了TFP-树算法是有效的,而且显著改善了FP-树算法的性能。

关键词：数据挖掘频繁模式最大目标频繁模式 TFP-树 FP-树

Robust Threshold Guillou-Quisquater Signature Scheme

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Robust Threshold Guillou-Quisquater Signature Scheme

The 1st chinese Conference on Trusted computing and information Security

作者： WANG Hong. ZHANG Zhen-feng, FENG Deng-guo State key laboratory of information Security (Graduate School of{3.), {3. 10003., China State key laboratory of information Security (institute of Software of{3.), {3. 100080, China

＜正＞ The deficiencies of the first threshold Guillou-Quisquater signature scheme presented by Li-San Liu, Cheng-Kang Chu and Wen-Guey Tzeng are analysised at first, and then a new threshold Guillou-Quisquater signature scheme is presented. The new scheme is unforgeable and robust against any adaptive adversary if the base Guillou-Quisquater signature scheme is unforgeable under the chosen message attack and computing the discrete logarithm modulo a prime is hard. This scheme can also achieve optimal resilience. However, the new scheme does not need the assumption that N is the product of two safe primes. The basie signature scheme underlyingthe new scheme is exactly Guillou-Quisquater signature scheme, and the additional strong computation assumption introduced by the first threshold Guillou-Quisquater scheme is weaken.

关键词： veriable secret sharing threshold cryptography digital signature scheme robust secure multiparty computation

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基于本体的查询系统研究

计算机工程与应用 2004年第34期40卷 186-187,194页

作者：李志平孙瑜云南师范大学计算机中心昆明650092 中国科学院计算技术研究所智能信息处理重点实验室

该文对查询系统做了深入的研究,提出了一种基于本体的智能查询系统的形式化模型,并且对系统的具体运行过程进行了详细的分析。该模型充分考虑了用户查询的语义信息,并且引入了本体环境和用户查询环境来对系统进行建模。将用来对数据库... 详细信息

该文对查询系统做了深入的研究,提出了一种基于本体的智能查询系统的形式化模型,并且对系统的具体运行过程进行了详细的分析。该模型充分考虑了用户查询的语义信息,并且引入了本体环境和用户查询环境来对系统进行建模。将用来对数据库的语义信息进行描述的本体层引入到异构的、分布式的数据库系统中,在方便用户进行查询的同时增加查询结果的相关性和用户满意度。同时,系统能够及时地反映数据库信息的动态变化。

关键词：本体智能查询系统语义数据库

Experimental Contrast of Several Typical Algorithms for Local Features Detection

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Experimental Contrast of Several Typical Algorithms for Loca...

2010 International Colloquium on computing,Communication, Control, and Management (CCCM2010)

作者： Chunxia Yin institute of Automation chinese academy of sciences beijing 100190,China Chengrong Li,Honglin Liu,De Xu institute of Automation chinese academy of sciences beijing 100190,China

This paper discussed four typical algorithms on local feature detection:Harris,SIFT,SURF and ASIFT,compared their performances on rotation,scale transformation,change of illumination and viewpoint.6 groups of images,3. images in total,captured with different parameters were used in the *** extracted feature points in each image first,then matched the Harris features with local correlation algorithm,and matched the features in SIFT,SURF and ASIFT with nearest-neighbor *** last we compared the robustness,stability and computing complexity of each method.

关键词： feature detection,image matching,Harris,SIFT,SURF,ASIFT

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多Agent系统模型及其应用

计算机工程与应用 2003年第12期39卷 50-53页

作者：孙瑜夏幼明李志平中国科学院计算技术研究所智能信息处理重点实验室北京100080 云南师范大学计算机科学与信息技术学院昆明650092 云南师范大学计算机中心昆明650092

文章提出了基于访问、感知和知识的多Agent系统模型。从特定环境中的Agents为完成一定的任务所应具备的能力的角度出发,引入了环境状态划分函数、感知函数以及状态转移函数等来对Agents和环境进行研究并建立系统模型。该模型是合理的、... 详细信息

文章提出了基于访问、感知和知识的多Agent系统模型。从特定环境中的Agents为完成一定的任务所应具备的能力的角度出发,引入了环境状态划分函数、感知函数以及状态转移函数等来对Agents和环境进行研究并建立系统模型。该模型是合理的、自然的。同时,它还区分外部环境与Agents环境中可访问的信息,Agents感知到的信息以及Agents知道的信息,并研究了系统的运行过程。接下来,通过具体的实例来说明模型的具体应用。最后进行总结并讨论了进一步的研究工作。

关键词：多Agent系统模型访问感知知识

Research on Ranking Support Vector Machine and Prospects

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Research on Ranking Support Vector Machine and Prospects

第二十九届中国控制会议

作者： DING Shi-Fei 1,2,LIU Xiao-Liang 1,ZHANG Li-Wen 1 1.School of Computer Science and technology,China University of Mining and technology,Xuzhou 221008,P.R.China 2.key {3. of {3. information processing,institute of computing technology,chinese academy of sciences,{13. 100080,P.R.China

Learning to rank is designed to determine a ranking for the target objects according to some ***,the problem about learning to rank is to learn a ranking function from a training set whose data has been *** is most applied to the social sciences and information *** to rank is a hot issue in the field of information retrieval and machine learning at *** paper analyses the process of Ranking Support Vector machine（RSVM）from a theoretical point of view from the classification and regression respectively,and sets up the two basic mathematical models about *** general introduction about RSVM in the application,training speed and generalization ability is also *** the end,we come to a conclusion.

关键词： Support Ector Machine(SVM) Ranking SVM(RSVM) Learning to Rank Ordinal Regression

Study on Internet of Things application for Highspeed Train Maintenance,Repair and Operation（MRO）

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Study on Internet of Things application for Highspeed Train ...

2012 National Conference on information technology and Computer Science

作者： Weijiao ZHANG institute of computing technology China academy of Railway sciences{3.,China

the design of EMU IoT-system,which is oriented to the MRO of high-speed trains,was studied with implementations of sensing technologies like RFID,sensors,etc;with regarding to the future requirements of safety,orderly,efficient and high-quality in EMU maintenance service of *** operation:massive seamless embedded RFID tags and sensors,on the basis of trainground transmission network,perceive running and defects status of high-speed train in real-time;realizing holographic train visualization and transit *** maintenance and repair:multisource and multilevel raw data,from the collection of various production aspects such as trains flow,parts flow,labor jobs flow and equipments,monitor productive process and logistics of train maintenance in total life *** general framework and detailed technical solution were presented in this paper;for the efficient processing of raw data,a semantic analysis measure driven by complex event mechanism was introduced;finally,a quantitative evaluation of productivity upgrading owing to IoT was *** RFID applications involved are running or experienced pilot tests in factory environment.

关键词： intelligent transportation internet of things (IoT) high-speed trian semantic analysis complex event processing

相匹配滤波与频率域维纳滤波结合在地震信号处理中的应用

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数值计算与计算机应用 2004年第1期25卷 3-12页

作者：洪学海中科院计算技术研究所国家智能计算机研究开发中心

The surface wave signals produced in natural seismic are “intact“ and complex, it is the key which eliminating the noise from that signals if we wanted to invert the structure of the earth using the true signal which the earth *** inter-station fundamental-mode surface wave attenuation coefficient was calculated combined the phase-match filter with frequency-domain Wiener filter. The first, we separated the fundamental-mode surface wave from different two original signal which recorded on two stations which are on one big-circle path using phase-matched filter, and then calculating the attenuation coefficient using frequency domain Wiener filter. It is avoided the negative attenuation coefficient that can't be explained. All of this are the base of inverting the inter structure of the earth.

关键词：相匹配滤波频率域维纳滤波衰减系数地震信号信号处理 Gauss函数