The paper discusses the differences and relationships between thesaurus and domain ontology, and the advantages of the approach to build domain ontology from the base of thesaurus. It introduces the tools in brief, then puts forward a thesaurus-based methodology to build domain ontology and details all parts of it.
Digital library nowadays is the important mode of exploring knowledge resources in community sharing and value-added utility for libraries. This article introduces technically the integrated resolution of portal-type digital library based on the Knowledge grid——CNKI Grid Resources Sharing Platform and its operation system-the capability and technology characteristics of CNKI KGOS’s primary groupware.
Among the wide range of information retrieval visualization systems, the basic process of its implementation is yet neglected. Based on the analysis of different information retrieval visualization systems, the process of the design and implementation of information retrieval visualization is described, including the visualized object and virtual structure, visual mapping, visual information space, and rendering. Visualization of information retrieval is for aiding with the information retrieval, which is the principle for the implementation.
The construction and management of digital collection is running through all facets in the work of library digital resource . This paper discusses the cost composition aspects of digital collection , it also analyses cost composition in every phase. It aimes at pursing good ways of reducing management cost, perfuming cost control effectively and improving service performance of digital collection.
The resource-oriented digital library, the system-oriented digital library and the service-oriented digital library best illustrate the development phrases of the digital library. The service-oriented digital library should consist of the following components: three kinds of resources, two service platforms, and one portal. The virtual reference system, as one of two service platforms, is playing an important role in the service-oriented digital library. A distributed collaborative virtual reference system and its framework are presented in the paper, and an automatic task scheduler for the synchronous reference and the asynchronous reference is also described in detail.
Java, an advanced computer language, as a promising programming language,is characterized by object oriented and focus on the network as the basis.The system adopts Java as a developing tool, and integrates the technology of HTML, Java Bean, Java Serve, JSP to complete the design. It makes the library manage system on Internet into reality.
In this paper, the auther design a multi-agent model of the information mining system based on Web and analysis the application value of the data mining system in library field.
The contents and features of VRA Core are introduced in this paper. The real examples of visual resources——photographs are described with XML format taking VRA Core as the standard of Metadata.
This paper is on the basis of analyzing network security demand for the automated system of the library, then introduce the method of using iptables tool to create the firewall under the environment of Linux.
The paper discusses three basic techniques for Cross-Language Information Retrieval(CLIR): query translation, document translation and no translation .Query translation is most usually used today and the research development of some essential problems about it is expatiated. At last, the actuality and the future of CLIR are summarized.
Using “Information Retrieval” as a keyword and based on CNKI, this paper makes a quantitative analysis of the articles collected by core journals of library and information science of our country on information retrieval from 1999 to 2003 , and points out the amount of the papers, relative authors on information retrieval and the institutions they work for, main contents and core journals of information retrieval, and then analyze the situation of information retrieval during this five years.
Current search tools are designed for all users, no considering of the special needs of individual user. A way of personalized retrieval based on ontology is proposed in this paper，in which individual user search intention can be deduced by the user interest model which is constructed by learning user search history automatically. This way can be used in intelligent information retrieval such as Internet on special domains or special user groups and Intranet.
The design thought,the functions and how PB be applied in its implementation of medical retrieval system are introduced in this paper .This system extend the function of MDLINE ,and it’s very helpful for teachers and scientific researchers to built their own medical resources database on the basis of what they have already obtained in MEDLINE. Meanwhile, this experiment is also a favorable try in solving a long puzzled problem in medical document retrieval education.
First, this paper introduces the architecture about CA system in the university. And based on this, two kernel servers’ design is researched on. We analyze LDAP directory,customization,replication and security functions about LDAP, then talk about how LDAP is designed and implemented in CA system. After this we analyze the design idea and real implementation of CertServer.
Bibliometrics data of Chinese Academic Journal Comprehensive Citation Report and Chinese Academic Journal Webometrics Reports are applied to the analysis on the time distribution of downloaded frequency and the time distribution of cited frequency. The peak-values (percent) of the distribution curves and the the ratio of the downloaded frequency and cited frequency are analyzed. The conclusion obtained is: the papers published in the last year are downloaded more than that published in other years, the papers published in the year before last year are cited more than that published in other years, the ratio of the downloaded frequency and cited frequency of papers published in current year is higher than that published in other years. The distribution curves of downloaded frequency and cited frequency of papers are studied, concentration coefficients are compared with each other. It is proposed that the downloaded indicators should be considered sufficiently as the cited indicators in the comprehensive evaluation system, owing to they are not consistent with each other in all cases.
This paper issues a multi-models website evaluation method by integrating five websites evaluation models used frequently nowadays. The Web design, Web technology and Web value are the mainly three characteristics in the multi-models evaluation system. The detail to evaluation system is discussed, and useful conclusions are made.
This paper discusses the history of IA and reasons of IA’s emergence; finally, the author puts out the ideas of the feedback mechanism of IA.
This paper studies C/S model of system development and ADO network database interface technology, analyzes and designs Postgraduate Students Recruitment Management Information System, presents overall functional framework, the data flow diagram and EE—R model of the system, and implements the system in Windows environment.
More and more digital academic information resources are available in libraries today . How to make these resources to be known by users ? How to make these resources to be used sufficiently ? This is a Challenge for librarians . This paper details the practice and thoughts in this field in the library of Beijing Normal University, and it also discusses that there are still a few disadvantages in DRMS to be improved . As a conclusion , This paper describe the framework of a future digital resources management system.
This study analyzed the finance research reports using Dublin Core Metadata standards according to criteria of correlation description of Dublin Core Metadata. It established the principle of catalog in financial research reports. It also gave the scheme of description of electronic financial research reports by Dublin Core Metadata.
As one of the standards over Internet,XML document is often used for describing,storing and interchanging of text data.This paper discusses the technique scheme for storing pictures with XML document,which includes the XML document structure,pictures storage,submitting on line,download and display on line,describes the technique essentials of each function and step,and gives the realized codes written by ASP.NET.The technique here for managing pictures based on native XML document and ASP.NET has the characteristics of database driver-free, easily implemented,etc.
This paper introduces the China patent online search system of SIPO and CNPAT, and makes a full comparison and evaluation between them in the aspects of their covering range and retrieval methods.
This paper gives a deep discussion on the programming ,configuration and type-selecting of the library server, and introduces four ways to evaluate the server capability. Then the article gives a TPCC calculation on the server requirements of Wenzhou library automatization system by using one of ways mentioned above, and take this as a beginning to expect a TPC benchmark testing programme to adapt for practical operation reqirements of the library.
By analysing the concept,producing reasons,protecting range and safing present of network privacy, especially on the technics and applications, the paper have discussed the safety problems of network privacy and gave some tactics of safeguard.
This article provides an overview of the commercial Chinese E\|Book industry, its characteristics, the financial models being used to sell E\|Books to readers, and the challenges that must yet be overcome.