Information science(IS) is a science which studies searching of text and other information. Information retrieval(IR) problems are related to meaning and semantics theory. This paper investigates primary the relationship between semantics theory and information retrieval. The picture theory and the theory of language game are discussed in the paper. The authors pay more attention to the consequences for such theories for IR.
Golden Stone Tapian is a special information resource appeared only in Chinese culture. The design and implementation of a digital library for Tapian is presented in this paper. The detail information about the system architecture, object management and distribution is discussed here.
As the infrastructure of digital library, digital object unique identifier is responsible for identifying, locating and managing of digital objects. This article discusses the types, component and principle of unique identifier, and analysis the demand of unique identifier from the logics,namespace,complexity,integratity and interoperability. Next ,the difference and relation have been compared among URI,URL and URN. Those syntax and identifying framework are also introduced. At last Cool URL is discussed in detail.
数字图书馆的互操作性取决于元数据的有效共享，而元数据的有效共享必须依赖元数据交换的统一标准。本文通过比较Z39.50和OAI'MHP两种互操作协议，探讨了元数据的共享和分布式数字图书馆的体系结构。
It is an useful method to build a personalized recommender system in order to provide personalized information service in the context of digital library.Based on information retrieval technique, information filtering technique and collaborative filtering technique, the paper describes its main function.
An important issue that construction of digital library currently faces is heterogeneous of digital resource. Based on CORBA digital resource general data mediation this paper presents an integrating method, which imports the concept of digital resource, realizes the integration of heterogeneous of digital resource under different platform. Visiting the digital library resource will be a unified entirety.
Digital museum system based on XML techniques is discussed in the paper. Properties of XML, SVG, VoiceXML, etc. related to the system are described. Such considerations as selection of its platform, digitalization of museum contents, retrieval of multimedia data and sharing of these information resources are taken in the design course, which is helpful to construction of the system under circumstance of Internet. The proposed method can also be used in the organization, storage, retrieval and display of multimedia data for digital libraries and archives.
With the intellectual contributions accumulated over nearly 20 years, Z39.50 is already a mature standard for information retrieval. But there is still few known beyond the library realm. Complexity and utilization of unpopular transport protocol are the main barriers to popularize the standard. In order to develop a more popular standard, some of the ZIG members initiate a group of projects to recast Z39.50, the plan is called ZING stand for Z39.50-International: Next Generation. SRW is one of the projects, defining Z39.50 as a Web service. SRW preserves merits of classic Z39.50, discards those aspects no longer useful or meaningful and simplify many Z39.50 features. By lowering the barriers to implementation, SRW is more attractive. This article totally introduces SRW specifications, and discusses SRW features along with classic Z39.50.
Acquisition of periodicals and books is an important issue in a library. On the basis of the theory of software engineering,the authors developed a prototype of the decision support system of purchasing in library. In this paper,the authors introduce the theory and technology in the system.and illustrate the function of the system.
In this paper the authors introduce four typical information visualization methods, such as icon, Methods of describing high-dimensional space. At the same time the authors discuss applications of such visualization.
The system heterogeneity, including platform heterogeneity and syntactic/semantic conflicts, makes the interoperability among different library applications very difficult. As a platform-independent format, XML is a simple, flexible, and powerful way for computers to exchange data and control information. SOAP provides a simple light-weight mechanism in a way of XML file, in order to exchange structured and typed information in dispersive or distributed environment. So in this article the author used SOAP to solve the interoperability problem among different library applications, and a prototype system is designed and developed using the latest technology, such as XML, XSLT, DTD and Java Servlet, which realizes the information search between two library applications.
This article describes the development situation of full text retrieval in China and it discusses three arithmetic of full text retrieval,compares their advantages with disadvantage. Lastly, this paper summarizes the full text retrieval system in China.
This paper elaborates how the information retrieval models based on either term index or link analysis resolve the problem of ranking the documents,it also discusses the advantages and drawbacks of these models.
This article describes how to retrieval Science Citation Index database using DIALOG, and sums up some tips of searching author index and citation index in order to decrease the total cost of online searching.
This paper introduces a method about distributed information retrieval.An agent sends request documents to homogeneous sites and receives result documents from them by XML,and shows the retrieval results to users after sorting and combining
The paper introduces the present situation of molecular bio-information resources. It discusses how to retrieve them on Internet and apply them on bio-medical field as well.
The background and significance of developing this system is presented in introduction. In the first two parts, the architecture and framework of this system and NRM self-established are described. In the last three parts, the function and realization mechanism about the model of resource supervision and evaluation, the model of data- mining and the model of users 'information feedback are emphatically expatiated. At the end, the kernel of network information resource management was expounded.
The author has given a detailed explanation to the information resource digital construction and application technology as a course. He points out that informationization is based on digitalization. Digital library is more than a digitalized library and it has a much wider concept as a group of information database. It's our task to work on the information resource digitalization construction and the research and development of applied integrate system so that it can be widely used in the information construction of every field. As a result, experiences can be accumulated and standard can be reached. Finally the information database will be applied to government network, ERP, research institutes, documentation and information centers in colleges and universities, and e-commerce, which will undoubtedly serve as CNKI.
Free information databases on Internet have brought new chances and challenges to the work of patent novelty searchng.The authors discuss the biological sequence patent novelty searching in the following aspects: the characters of biological information science resources, the retrieval application of the famous free biological sequence databases on Internet , and the comparison of the free databases and commercial databases.
This paper analyzes the structure and good characters of three-tiered Client/Server database application, and proposes the implementing method of information collection and distribution system based on this C/S mode using CORBA component technology in Delphi.
Hainan province academic libraries have been accomplished automation construction and network construction under leading by educational department and academic library work directing committee of Hainan province.The author has been fulfilled basic network circumstances building, internet information resource building, digital library building and essential academic explorer building, furthermore they are going to provide service as borrowing and loaning interlibraries and database information online.They expound network and digital information constructing concept for Hainan province academic libraries in the future in addition.
Latest information on subjects is very important in the development of science. Now there are many kinds of electronic databases and these databases have different coverage. In this article the author introduces a searching method to search information on electronic databases，with witch the three principal indexes( SCI, EI, ISTP ), the Full-Text e-Journals navigation with the interlibrary loan service are combined together.
Cooperate online resource cataloguing is the working form that has been long expected in the circle of library cataloguing, and it expresses the highest stage and level for library cataloguing technology. Starting from the meaning of Cooperate online resource cataloguing, this paper emphatically analyzed its characteristics, approaches and basic process, then pointed out the corresponding countermeasures that should be taken for universities union catalogue online in Hebei province.
This paper explores thoroughly the citation searching function of the China Journal Full-text Database, analyses the methods for single and combined terms citation searching, and introduces several typical examples of citation searching.
Binding text-based data files as DSO to HTML through TDC and Data Binding technology, and no server side scripts such as ASP/CGI required, this way not only achieve webpage dynamic interactive, but also relieve the server's load and network jam. Therefore, TDC and Data-binding technology suits for the using of small-scale dynamic data.
This paper gives a brief introduction of current status of system maintenance of electronic reading-room, points out a resolving methods： recovering the computer hard disk with ghost technology；and based on his own experience, the author explains two method being used in electronic reading Room．
Facing the exciting trend of library digitization, this article calmly analyzed the problems, difficulties, and the restrictions in this area. It also clarified the confusing concepts. It claimed that in China there is still a long way to go in transferring the libraries into modern and digital media center.
The article analyses and discusses the current patron management manners and patron service state in the digital library, presents the new patron management pattern and patron service pattern. The paper thinks that a reasonable patron management pattern is the combination of the IP authentication plus firewall segregation manner and the user authentication plus access authorization manner, and the basic patron service patter is the combination of the integrated information service and the personalized customization service in the digital library.
The multiple information resources on Internet could not be enough utilized for modernization of military forces,which limits the application of Internet in military field to a certain area. To give the solution of this problem,this paper will cover some research into the reorganization and publishing of military information resources.
Some problems in resource construction of middle-small college libraries are pointed out.It is suggested that a college library should combine virtual document with actual document, adjust the idea of resource collection and ensure the demand of the vast majority of readers with infinite funds.
