Based on the case of metadata standard for multimedia resources in the Peking University Library, the paper illustrates the characteristic of multimedia resources and the metadata standard. The integration design idea, innovative application and achievements are also introduced, and then some solutions to the problems in process of design and application are discussed.
This paper mainly discusses how to achieve the full text retrieval of OA resources. It states the current situation of OA resources retrieval platform and the difficulties in implementing full text retrieval, and then proposes and concretely implements the technology method of full text retrieval of OA resources using search engine as proxy agent automatically. It also analyzes the aspects of system design and technology details. At last, it gets satisfactory results in efficiency and quality test of full text retrieval with search engine agent.
Based on the ebXML specification provided by OASIS, this paper emends the taxonomy of ebXML specification by analyzing the relationship between ebXML specification and its components, so as to provide the classification for ebXML specification in UDDI registry.Then, based on the amended classification, it describes the design and realization of ebXML classification, and briefly illuminates the registry process of ebXML specification in UDDI.
Taking China Hydroelectric Engineering Database as an example, this paper presents a solution to issuing databases of special subjects by GIS, introduces logic construction of the system and its function, and emphasizes the data organization and retrieval mechanism.
Aiming at the problem existing in the current knowledge organization and service system, a knowledge organization and service system based on modular Ontology （Mo-KOS）is put forward, and the principle, quality control and flow of autonomous knowledge organization are analyzed respectively. Then the implementation scheme of the autonomous and personalized knowledge service is discussed. In the system, autonomous knowledge organization and personalized knowledge service can be provided.
Aiming at meeting the corporations’ individuation need, a flexible framework based on Web has been put forward and its traits and superiority have been discussed. An in-depth analysis has been done with the technologies and methods of flexible framework under VS2005. The program of system modeling and system structure has been researched already. Based on the technologies above, a human resource management system has been designed and successfully applied in a company in Hefei. This example proves that the flexible framework based on Web provides a feasible way to design individuation information management system.
Audio documents visualization is a significative application area of information visualization. This paper proposes and analyzes a spoken documents visualization application model. Then an experimental system is used as an evidence to validate practicability of this model. Finally, some relevant questions are discussed.
In view of expertise recognition and retrieval of enterprise expert, this paper uses combining document weight to implement enterprise expert search based on W3C collections of TREC, and compares its performance with another common expert search method. Study results show that the method of this paper excels in stability by using model BM25.
Based on the study of the duplicated Web pages detection algorithm with feature code, the paper proposes a duplicated detection algorithm based on the keyword from user’s submission for meta search engine. The main steps of algorithm are introduced. And this algorithm is tested and verified its validity in an experiment.
This paper concerns on the characteristics of language used in the Web searching and seeks to make an exploratory study on the syntax and semantic query problems. The research mainly uses search engine query log analysis method, then compares with the results from Web questionnaire analysis. At last, the authors come to the conclusion on the characteristics of syntax, term category, assistant words, and principal words. The syntax in Web searching is very stable; users rely greatly on assistant words; the natural-language-character of query is obvious; and the query syntax is very simple. Search engines has become an helpful supplement for traditional information retrieval tools; forms unique contents, in which consists mostly entertainment and non-mainstream culture, and which differentiate search engine from traditional information retrieval tools.
This paper concerns on the influence of the natural and social properties on language usage in Web searching, and seeks to make an exploratory study on the elements that affect user’s behavior. It synthesizes the results from Web questionnaire survey and controlled experiment in which users participate, and comes to the conclusion on the difference among gender, age, educational background and professional education in searching. This research contributes to the study on the elements that affect searching process, the modeling of user behavior and the improvement of search engines’ quality of service.
After analysing the relationship between website structure optimization and website information organization, the research progress of website structure optimization is addressed based on two different research aspects, and the advantages, shortages, further study of each aspect are also discussed.
The authors firstly summarize the development status of library service quality evaluation in universities. Then based on the LibQUAL+TM and the practice of service quality evaluation system, this paper introduces the system method on evaluating the service quality of library from the aspects such as design ideas, system function, technology implementation. It can offer a reference in the work of service quality evaluation for library.
The paper introduces the library FC-SAN storage system construction of Fuzhou University, including architecture design, development planning, product selection, system deployment, expansion and adjustment, as well as performance optimization for different digitalized application.Now, the whole storage system performance and space utilization are improved, the “211 project” construction need in our university is met perfectly.
On the basis of introducing the common load balancing technologies, this article suggests a solution about the load balancing policy, session persistency mechanism and health checking module of the load balancing system based on NAT technology, specifically for the characteristics of the Peking University digital library portal service.
This paper introduces an OPAC system based on the FRBR model by using the existing CNMARC bibliography record. Firstly it introduces the function of the system, and lists the database structure. Then explains the process of system realization, and at last elaborates the aggregation algorithm that CNMARC bibliography records are polymerized to the FRBR object .
This paper proposes an ordering method on book retrival results based on reader’s borrowing information. Application in the library of Ocean University of China shows that it can provide the readers with better information service in library operation. The system improves the quality of service and gives great convenience to readers.
Taking fuzzy retrieval for Chinese title catalogue as an example, this paper analyses the fuzzy retrieval problem for MARC and proposes an improvement solution based on set operations. It splits the title for retrieval to metacharacters by fine-granularity and retrieves these metacharacters as redundant title for retrieval,then converges all retrieve results by set operations and returns. The improvement solution can enhance the depth to fuzzy retrieval for MARC and optimize present retrieval system with low-cost.
Using decision tree algorithm of data mining technology, with the library circulation information and readers information, by calculating information gain among the properties, the paper constructs the integrity of the active readers decision tree, finds the evaluation rules for the active readers, offers a decision-making for deep-seated services from the library.