摘要:
Knowledge Graph is a powerful tool to manage large scale knowledge, and is an important means to deal with the problem of the knowledge fragment. Knowledge Graph can be applied to Semantic Search, Question Answering System, Deep Reading and other. The current research mainly focuses on the information fusion of broad-spectrum knowledge, and aims at improving the recall ratio of the knowledge. Based on the previous research, we propose a method for constructing the domain knowledge Graph. We use information extraction technology to extract entities and relationships from open network documents. Meanwhile, we mine the multidimensional relationships between entities, and solve the information conflicts generated by multi-source information fusion. These are important to rich the information and improve the recall ratio and precision ratio of domain knowledge. So the method has important significance to build knowledge graph of specific areas.
期刊:
2013 2ND INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION AND MEASUREMENT, SENSOR NETWORK AND AUTOMATION (IMSNA),2013年:674-678
通讯作者:
Peng Guo-jian
作者机构:
[Peng Guo-jian; Chen Guo-min] Univ South China, Coll Econ & Business Adm, Hengyang, Peoples R China.;[Liu Ze-hua] Univ South China, Off Teaching Affairs, Hengyang, Peoples R China.;[Luo Chen-hui] Univ South China, Coll Comp Sci & Technol, Hengyang, Peoples R China.
通讯机构:
[Peng Guo-jian] U;Univ South China, Coll Econ & Business Adm, Hengyang, Peoples R China.
会议名称:
2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation (IMSNA)
会议时间:
DEC 23-24, 2013
会议地点:
Toronto, CANADA
会议主办单位:
[Peng Guo-jian;Chen Guo-min] Univ South China, Coll Econ & Business Adm, Hengyang, Peoples R China.^[Liu Ze-hua] Univ South China, Off Teaching Affairs, Hengyang, Peoples R China.^[Luo Chen-hui] Univ South China, Coll Comp Sci & Technol, Hengyang, Peoples R China.
关键词:
component;Self-regulatory;Storage system;Failure detector;Global stabilization time
摘要:
Distributed storage systems have the advantages of self-organizing, scalability, robust and fault-tolerant, which provide fundamental support for mission-critical applications. Unfortunately, there still exist some problems in real network conditions, especially, when considering asynchronous distributed environments, where messages may be delayed indefinitely and nodes may fail. So, failure detector is one of basic components to build a reliable distributed storage system. Considering the highly dynamic characteristics of distributed system, a novel self-regulatory failure detection algorithm (SFDA), which can combine heartbeat strategy with unbiased grey prediction model, is designed to improve the failure detection quality of system (QoS) according to the application needs and network environment changes. The key goal of using correction value in SFDA is to provide adoptable and usable service in all kinds of applications. The results show that, failure detector based on SFDA is more effective and flexible than other failure detectors.
摘要:
Many Studies has carried on the technology of detecting invariants, for example, Daikon can detect most of invariant by presetting some types of them. But unary polynomial inequality likely invariants are rarely discovered by traditional tools. An effective method to detect unary polynomial inequality likely invariant was proposed in this paper. Through analyzing the property of value ranges of unary polynomial inequality likely invariants, the algorithm set the threshold value and calculates neighbor distances to determine the form of invariants. Finally, experimental results are given to demonstrate the effectiveness of this method.
会议名称:
International Conference on Mechatronics and Industrial Informatics (ICMII 2013)
会议时间:
MAR 13-14, 2013
会议地点:
Guangzhou, PEOPLES R CHINA
会议主办单位:
[Yang, Tianming;Tang, Zhen;Sun, Wei] Huanghuai Univ, Huanghuai 463000, Henan, Peoples R China.^[Wan, Yaping] Univ South China, Sch Comp Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称:
Applied Mechanics and Materials
关键词:
Backup;De-duplication;Logical Data Deletion
摘要:
Data de-duplication divides backup stream into chunks and eliminates duplicate chunks across the entire system, thus remarkably reduces the storage and bandwidth requirement for backups. However, this technique also introduced many new problems among which the performance problem has been resolved by many of the existing solutions, while the logical data deletion problem is not well studied till now. This paper studied the logical data deletion mechanism in de-duplication backup systems, analyzed the memory overhead of the Bloom filter, which supports both high performance de-duplication and logical data deletion, and proposed a lazy deletion method to minimize the influence of logical data deletion on de-duplication performance.
摘要:
Using the genre perspective, we studied the electronic communication of knowledge users collaborating on a movie community and found that their work and interactions were mediated by the use of genres. Drawing on these findings, we develop the concept of genre repertoire to designate the set of genres enacted by groups, organizations, or communities to accomplish their work. Automatic discourse classification according to genre in social information sharing, transfer and knowledge communication provides a higher level of service quality. By investigating user behavior in movie community, the relationship between intertextuality of discourse genre and user behavior was studied. We denoted genre by using vector, and discourse genre intertextuality intensity is measured with vector distance. And for those discourse which genre is unknown, genre intertextuality is calculated using user behavior. The results show that user various behaviors stickiness in movie community and discourse genre intertextuality intensity have potential common features.
摘要:
We studied the electronic communication of knowledge users collaborating on a community and found that their work and interactions were mediated by the use of tag. Drawing on these, we found social ta
通讯机构:
[Huang, XinYang] U;Univ S China, Sch Comp Sci & Technol, Hengyang, Peoples R China.
会议名称:
International Workshop on Information and Electronics Engineering (IWIEE) / International Conference on Information, Computing and Telecommunications (ICICT)
会议时间:
MAR 10-11, 2012
会议地点:
Harbin, PEOPLES R CHINA
会议主办单位:
[Huang, XinYang;Tan, MinSheng;Ouyang, Lijun;Liu, Li] Univ S China, Sch Comp Sci & Technol, Hengyang, Peoples R China.
会议论文集名称:
Procedia Engineering
关键词:
DWT;Xiong invariant wavelet(XIW);rotation- and scaling- and translation-(RST) invariance;crop- invariance
摘要:
This paper presents a new method to solve the crop- invariant problem of an invariant wavelet, RSTXIW, which is a rotation- and scaling- and translation- invariant. Based on the feature points and second moments of the signal and based on a scale function of Daubiechies wavelet, we renormalize a signal in the function space. By using the feature points to divide the signal into several parts and by applying cluster analysis, we can correctly calculate the whole second-order moments of the cropped signal. Then we can obtain the crop- invariance of the renormalized signal, tested by some experiments. (C) 2011 Published by Elsevier Ltd.
摘要:
Web document clustering is one of the most important research branches of Clustering Analyzing. The objective of web document clustering is to meet the need of retrieving web document efficiently from massive information in Internet. Recently social tagging is the important form of document organization in web 2.0, and the tagging as a document descriptor is used to improve the effectiveness of web searching. But a web document usually belongs to various category of tagging, which may lead to the difficulty of browsing web document based on single tagging. This paper explores the use of Formal Concept Analysis (FCA) as mathematical tool to analyze the social tagging of web document, and presents a model for web document clustering based on tagging semantic. Furthermore, taking community web site Douban as an example, the model is applied to allow users to tag and serendipitously browse web document using Formal Concept Analysis.
期刊:
Proceedings of the 2012 IEEE 26th International Parallel and Distributed Processing Symposium Workshops, IPDPSW 2012,2012年:2156-2161 ISSN:2164-7062
作者机构:
[Liu, ShuKun; Chen, JiFeng] Hunan Int Econ Univ, Dept Comp, Changsha, Hunan, Peoples R China.;[Yang, XiaoHua] Univ South China, Dept Comp Sci & Technol, Hengyang, Peoples R China.
通讯机构:
[Liu, ShuKun] H;Hunan Int Econ Univ, Dept Comp, Changsha, Hunan, Peoples R China.
会议名称:
International Conference on Advanced Materials and its Application (AMA 2012)
会议时间:
APR 28-29, 2012
会议地点:
Changsha, PEOPLES R CHINA
会议主办单位:
[Liu, ShuKun;Chen, JiFeng] Hunan Int Econ Univ, Dept Comp, Changsha, Hunan, Peoples R China.^[Yang, XiaoHua] Univ South China, Dept Comp Sci & Technol, Hengyang, Peoples R China.
会议论文集名称:
Advanced Materials Research
关键词:
Compile;Contract;Software quality;Trace file
摘要:
In this paper, the main function of program contract in the software quality assurance is showed combined with the technology of static analyzing and dynamical analyzing. And the meaning of contract is described as well. Daikon and Diduce which are the main tools for detecting the program contract are introduced carefully. Not only the work process of Daikon and Diduce is explicated but also the main characters of them are showed. Combined with the framework of software quality assurance, the main differences between Daikon and Diduce are listed and the theoretical model of detecting contract is expressed in detail.
摘要:
A kind of wireless monitoring interface device based on wireless sensor networks for ammeters was proposed. Ammeters connected by UART or pulse interface to get ammeters’ real-time data. Then, an ammeter monitoring system based on wireless sensor networks (AMSBW) was designed. The system consist building-WSN and community wireless monitoring center. And user’s ammeters, ammeter wireless monitoring interface devices and building-sink nodes were included in the building-WSN; the center sink node and monitoring host were contained in community monitoring center. The functions of real-time monitoring, remote control and preventing electricity-stolen were designed in the AMSBW which had simple installation and configuration. Then a software system to test the AMSBW was exploited. At last, system’s tests results show that it could effectively achieve the goal of real-time monitoring and control ammeter.
通讯机构:
[Tan, Minsheng] U;Univ S China, Sch Comp Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
会议名称:
3rd International Conference on Measuring Technology and Mechatronics Automation (ICMTMA 2011)
会议时间:
JAN 06-07, 2011
会议地点:
Shanghai, PEOPLES R CHINA
会议主办单位:
[Tan, Minsheng;Tian, Haitao;Chen, Meng;Li, Xiang] Univ S China, Sch Comp Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称:
Applied Mechanics and Materials
关键词:
B-MAC;B-MAC++;Preamble Mechanism;TDMA/CSMA
摘要:
B-MAC was a kind of MAC protocol which was widely used in Wireless Sensor Networks (WSNs), and some high requirements had been provided for users. However, there were always challenges due to the high energy consumption and packets loss rate. A new MAC protocol called B-MAC++ based on B-MAC was proposed in this paper. The preamble mechanism was improved and funneling effect alleviation mechanism was brought out in B-MAC++. For the combination of the strengths of TDMA and CSMA, the preamble mechanism improvement achieved better energy-efficient, and made up to the weakness of WSNs, and a kind of CSMA/TDMA mechanism was introduced to alleviate funneling effect, and the sink-node's packet loss had been reduced. Experiments show that B-MAC++ is better than B-MAC in the performance of energy consumption and packet loss rate.
作者机构:
[Liu Shukun] Hunan Int Econ Univ, Dept Comp, Changsha, Hunan, Peoples R China.;[Yang Xiaohua] Univ South China, Dept Comp Sci & Technol, Hengyang, Hunan, Peoples R China.
通讯机构:
[Liu Shukun] H;Hunan Int Econ Univ, Dept Comp, Changsha, Hunan, Peoples R China.
会议名称:
International Conference on Advanced Measurement and Test (AMT 2010)
会议时间:
MAY 15-16, 2010
会议地点:
Sanya, PEOPLES R CHINA
会议主办单位:
[Liu Shukun] Hunan Int Econ Univ, Dept Comp, Changsha, Hunan, Peoples R China.^[Yang Xiaohua] Univ South China, Dept Comp Sci & Technol, Hengyang, Hunan, Peoples R China.
会议论文集名称:
Advanced Materials Research
关键词:
Class dependence graph;Hierarchy slicing;Program analysis;Program slicing
摘要:
Program analysis plays an important role in software development and maintenance. With this method, characteristics of every variable in program can be analyzed. During the period of program analyzing, computing the program slicing by the method of constructing system dependence graph is an efficient way but the work of constructing the system dependence graph is very complicated which often leads to many wrong results. So the algorithm of hierarchy slice is used in this paper. Using the precise results, the whole program can be analyzed and the dependence relation in the program can be discovered quickly.
作者机构:
[Ouyang, Chunping; Hu, Changjun; Liu, Zhenyu] Univ Sci & Technol Beijing, Sch Informat Engn, Beijing 100083, Peoples R China.;[Ouyang, Chunping] South China Univ, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.
会议名称:
4th International Conference on Complex, Intelligent and Software Intensive Systems (CICIS)
会议时间:
FEB 15-18, 2010
会议地点:
Krakow Coll, Krakow, POLAND
会议主办单位:
Krakow Coll
关键词:
data grid;GIS;spatial metadata;gas network safety evaluation
摘要:
With the development of e-science, more and more attention is drawn to the visualization and interoperation of scientific data. Integrating Data Grid technology and Geographical Information System (GIS) offers a well solution to implement e-science applications. Utilizing Data Grid technology could take advantages to share heterogeneous and distributed data sources. GIS provides visualization environment for spatial data and non-spatial data. In this paper we brought forward spatial information grid (SIG) architecture for gas network safety evaluation application. After discussing the key technologies of gas network SIG, such as spatial metadata modeling and spatial metadata searching, one prototype system was designed and then implemented. Through the SIG system, gas network safety evaluation results can be shown to users in an intuitive and convenient way.
作者:
Liu Shukun*;Yang Xiaohua;Chen Jifeng;Duan Shan
作者机构:
[Duan Shan; Liu Shukun; Chen Jifeng] Hunan Int Econ Univ, Dept Comp Sci & Technol, Changsha 410205, Hunan, Peoples R China.;[Yang Xiaohua] Univ South China, Dept Comp Sci & Technol, Heng Yang 421001, Peoples R China.
会议名称:
2009 WASE International Conference on Information Engineering(2009年国际信息工程会议)(ICIE 2009)
会议时间:
2009-07-10
会议地点:
太原
会议主办单位:
[Liu Shukun;Chen Jifeng;Duan Shan] Hunan Int Econ Univ, Dept Comp Sci & Technol, Changsha 410205, Hunan, Peoples R China.^[Yang Xiaohua] Univ South China, Dept Comp Sci & Technol, Heng Yang 421001, Peoples R China.
会议论文集名称:
2009 WASE International Conference on Information Engineering(2009年国际信息工程会议)(ICIE 2009)论文集
关键词:
program invariant;nonfunctional dependence;dynamically detect;quality of software;condition query
摘要:
In this paper, the notation of program invariant was described, and a theory model of dynamical generating technique of invariants was researched. Then, the technology of dynamical generating technique of invariants of nonfunctional dependence was discussed. A new method of dynamical generating technique of invariants of nonfunctional dependence based on the theory of database was showed. Then, a series of detecting measures of specific nonfunctional dependence invariants were proposed. Many kinds of program invariants can be dynamically discovered by the means.
摘要:
Since it is very hard for cluster-based WSN(Wireless Sensor Network) to implement efficient and secure communication either with CSMA or TDMA. In view, of the existing situation, a STC-MAC protocol has been put forward, which mingled with CSMA and TDMA and brought about better bottom-layer security. On the one hand, the wireless channel allocated by TDMA in intra-cluster nodes is able to cope with collision and crosstalk to achieve low latency. On the other hand, with the allocation of CSMA between cluster-head nodes, the channel can avoid multiple hops synchronization and enhance scalability. Furthermore, an early-warning algorithm was provided in this protocol for quickly recognizing attacks and reinforcing security. In addition, the J-Sim simulation platform, especially including a energy output port, has been extended. Through the simulation results, STC-MAC turns out to be better in energy-efficiency and anti-attack than 802.11 MAC.
期刊:
2009 ASIA-PACIFIC CONFERENCE ON INFORMATION PROCESSING (APCIP 2009), VOL 1, PROCEEDINGS,2009年:332-+
通讯作者:
Liu Shukun
作者机构:
[Liu Shukun] Hunan Int Econ Univ, Dept Comp Sci & Technol, Changsha, Hunan, Peoples R China.;[Yang Xiaohua] Univ South China, Dept Comp Sci & Technol, Hengyang, Hunan, Peoples R China.
通讯机构:
[Liu Shukun] H;Hunan Int Econ Univ, Dept Comp Sci & Technol, Changsha, Hunan, Peoples R China.
关键词:
program invariants;dynamically generating;quality of software
摘要:
With the development of computer science and technology, software has been widely applied in all kinds of business. It has been a very popular and important application system. So the quality of soft-ware causes more serious attention than before. Design by program invariant is a very important method which is used to improve quality of software. In this paper, a theory model of dynamically detecting technology of program invariant was built. And a new method of dynamically generating technology of program invariant of functional dependence based on the theory of database was showed. In this way, program invariant of functional dependence can be detected in a nimble way. Experiments have been done and the result demonstrates that the method is obviously reliable and efficient.