For rights management and process management, the article analyses the factors in a digital preservation agreement, discusses libraries’ rights to preserve and publishers’ restrictions for preserved resources, explores the principles, policies, and administrative requirements of a reliable preservation management, and outlines a framework for such an agreement.
This paper analyzes various types of digital resources, and proposes an integration of different types of digital resources. An integration and services platform is designed, and the details on the mechanism of its realization and workflow are introduced in this paper. At the same time, various support services which provided by the platform are discribed. Then technology implementation of the platform is provided such as Ajax and WebService technology. The visualization of resource management system facilitates the management operations for administrator and shows a good user experience.
The paper analyzes current application systems of digital library and proposes a train of think of constructing a sharing platform. The paper gives a detailed account of sharing platform’s structure and service framework. At last, the paper takes Degree Thesis Management System as an example and describes how to construct a system based on sharing platform.
Integrated search system is an important element of digital library.The project Development of an Embedded System for One-stop Access to NSTL Resources and Services is a typical integrated search system, so based on the characteristics of the project, this paper lists several pagination algorithms, and analyzes some instances. Finally a most excellent strategy is selected to improve the response of the system.
Through analysizing about the research status of some Ontology-based semantic search engines, this paper sums up a framework of general semantic search engines, deeply analyses the technological solutions and functional characteristics of some typical semantic search engines such as hakia, Qrobo, Swoogle, Zoominfo, Kango, briefly summaries the existing problems and difficulties of the development of the semantic search engines.
The paper introduces the research development of information grid technology in China in three areas of information connectivity，grid intelligence and security.
In this paper, the authors define the organization as a knowledge interchanging system from the view of knowledge management and propose a multi-tier organization model——RAI model and the mathematic definition of RAI model.
Aimed at the weakness of the keyword-based search, an Ontology-based information retrieval model has been presented. Considering the characteristics of Web documents, this paper brings forward a semi-automation construction method of domain Ontology, achievement the semantic indexing through a topic extracting method based on domain Ontology, and succeed in searching the information of defense products.
This paper analyzes Chi-square algorithm (CHI), which is unreliable for low-document frequency, and can’t show the pertinence for term and classification. A new Statistical Frequency algorithm (SF) is proposed according to the chief shortcomings. The experiments of the SF algorithm is validated by comparison, the results show that improved algorithm performs better.
This paper discusses the solutions to the key technologies of online patent analysis software, i.e. technologies of database optimization and data visualization, implements the system, and analyzes the running results based on system experiments..
Data acquisition based on user browsing behaviors is proposed in the paper. The method is applied to the project of the network of scientific and technological resources monitoring, analysis and evaluation system,and the feasibility and practicality of the method is verified in the paper.
In view of the problem that recommendation quality is seriously influenced by the sparsity of user ratings,an improved Item-based collaborative filtering algorithm based on compound weighted rating is proposed. The union of user rating items is used as the basis of similarity computing among items, moreover a compound weighted rating method is proposed to compute and complete the missing values in the union of user rating items for decreasing the sparsity. The experimental results show that the new algorithm can efficiently improve recommendation quality.
This paper proposes a approach to solve the problem of generality,scalability,maintainability in the traditional methods.
To aim at resolving the problem of difficult management of references in the process of composing dissertation, the authors take advantage of references’ strict annotation standard and realizes the automatic extraction and annotation of references in dissertation by the application of information extraction technology.
According to the domestic situation which lack of Chinese language books links to network resources,the author applies network information mining technology and constructs a storehouse platform for Chinese books resources.And the corresponding API interface is provided to facilitate the Library OPAC system to use and to integrate the relevant Chinese Books Information, at the same time expands the OPAC resources.
Firstly, the mathematical model of multiple service window loss system (M/M/n/n) is realized and established based on the queuing theory used in the digital documents serving system of library. Secondly, the practical data in documents serving system from some a university library is collected, and initially carries on the parameter computation and the confirmation analysis according to the model.
Through analyzing the circumstance for which the library business demands MELINETS Ⅱ data, the paper points out that the MELINETS Ⅱ has its own flaws in data output, and then recommends the settling method for it. That is to introduce the ODAC technique, in Delphi7.0 environment, which solves that the ideas and implementation process of the MELINETS Ⅱ data output through the second development. The paper expounds on the ODAC in the technological development in the process of connecting to the database, calling stored procedures and returning to the data. And examples introduce the function of the ODAC technique, so as to realize a smooth acquisition, collect MELINETS Ⅱ information to a portable data collector fast and accurately.
This paper analyzes the principle, function,application and effects of Sites Mirror which is a reverse proxy software, and explores the approach to construct a controllable access platform of digital resources quickly. This platform is not only favorable to colleges and universities, but also gives convenience to the teachers and students.
This paper makes a comparative study of four local digital collections management systems: “Digital Collections Management System” by Nanjing Anchor Technology Co.,Ltd., “CD Tower Disc System” by Hangzhou Zhuoyuan Technology Co.,Ltd., “Bowen Multimedia Data Management System” by Hanzhou Metadata Electronics Co.,Ltd. and “Changxiang Zhixing Digital Collections Management System” by Beijing Changxiang Zhixing IT Co.,Ltd. from different perspectives.