Using an online microfiche catalog for technical service and retrieval of bibliographic data

A prototype system is created that integrates a microfiche catalog into an online computer system for bibliographic control. Costs and operational data are collected and analyzed. The system permits the more economical microfiche storage of catalog records than would be feasible for comparable online magnetic disk storage. Experimental tests demonstrate the feasibility of the online microfiche catalog system for use in library technical services and retrieval of bibliographic data. The primary result of the project is the creation of a completely operational facility, including all equipment, software, procedures, and data bases necessary to demonstrate the system. A second set of results is derived from the experimental use of the system and the evaluation of costs and times for various operations. The cost effectiveness of the online microfiche catalog is demonstrated.     

区域高校图书馆一站式书目检索平台研究

通过构建区域高校图书馆一站式书目检索平台来解决读者在书目检索中遇到的困难。在区域高校资源共享,优势互补的基础上,使读者享受到一站式书目检索带来的快捷方便。     

一种基于向量空间模型的书目查询系统设计

通过对传统的书目查询系统弊端的分析,设计了一种基于向量空间模型的图书馆书目查询系统,并介绍了该系统的详细设计与实现过程。同时对该系统的性能进行了分析,分析表明该系统克服了基于RDBMS开发的图书馆书目查询系统的不足,提高了检索效率,满足了读者更高的查询要求。     

MEDLINE: an introduction to on-line searching.

MEDLINE is presented as a prototype for on-line bibliographic search systems. Creation of the data base, indexing language, and file organization are reviewed. On accessing the files, search logic is illustrated with a sample MEDLINE search. NLM's development of a document delivery system to complement its bibliographic retrieval system is discussed.     

Bibliometric analysis of CiteSeer data for countries

This article describes the results of our analysis of the data from the CiteSeer digital library. First, we examined the data from the point of view of source top-level Internet domains from which the data were collected. Second, we measured country shares in publications indexed by CiteSeer and compared them to those based on mainstream bibliographic data from the Web of Science and Scopus. And third, we concentrated on analyzing publications and their citations aggregated by countries. This way, we generated rankings of the most influential countries in computer science using several non-recursive as well as recursive methods such as citation counts or PageRank. We conclude that even if East Asian countries are underrepresented in CiteSeer, its data may well be used along with other conventional bibliographic databases for comparing the computer science research productivity and performance of countries.     

A logic basis for information retrieval

This paper examines the potential of recent work in artificial intelligence for the development of more effective information retrieval systems. The primary task in this research has been to examine and define the role of an expert system in the domain of bibliographic retrieval. Once such a goal can be described the available knowledge representations and techniques can be evaluated. This paper examines the role of an expert bibliographic retrieval system, examines an artificial intelligence view of information retrieval, and then describes a prototype expert information retrieval system that has been designed and implemented.     

Derived search keys for government documents

The purpose of this study was to propose a design for a Superintendent of Documents (SuDocs) number search key to retrieve bibliographic records for United States Government documents from OCLC's On-Line Union Catalog. Experimentation with a test file of 25,000 records indicated that a search key derived from a maximum of the first 14 digits in the SuDocs number is sufficiently distinctive to obtain an expected average retrieval of 2.5 records per search. OCLC will implement a SuDocs number search key in the future. It is expected that this key will be a valuable tool for library catalogers and users.     

Teaching on-line retrieval systems at the University of California, Los Angeles

All library school students should be provided with an opportunity to obtain hands-on experience in using such bibliographic retrieval systems as ORBIT, DIALOG, OCLC, etc. Yet, such training is both costly and time consumming. Two key issues that must be resolved in order to make the training more efficient and more effective are: (1) the integration of training in the curriculum as a module in cataloging and reference courses or as a separate course; and (2) the method of training which may include the use of videotapes, demonstrations, training manuals, etc. The teaching program at UCLA provides for discussion and demonstration of on-line retrieval techniques in the basic courses and advanced search training in a separate course using a specially prepared training manual.     

关联规则与图书馆书目推荐

文章分析了现有的图书馆书目推荐系统和商务书目推荐系统存在的不足,介绍了数据挖掘中的关联规则及其在图书馆书目推荐的应用.最后以简单的图书借阅例子说明Apriori算法的应用,通过分析大量历史借阅记录,对读者的借阅提供个性化的推荐服务.     

A prototype of an intelligent system for information retrieval: IOTA

Recent results in artificial intelligence research are of prime interest in various fields of computer science; in particular we think information retrieval may benefit from significant advances in this approach. Expert systems seem to be valuable tools for components of information retrieval systems related to semantic inference. The query component is the one we consider in this paper. IOTA is the name of the resulting prototype presented here, which is our first step toward what we call an intelligent system for information retrieval.After explaining what we mean by this concept and presenting current studies in the field, the presentation of IOTA begins with the architecture problem, that is, how to put together a declarative component, such as an expert system, and a procedural component, such as an information retrieval system. Then we detail our proposed solution, which is based on a procedural expert system acting as the general scheduler of the entire query processing. The main steps of natural language query processing are then described according to the order in which they are processed, from the initial parsing of the query to the evaluation of the answer. The distinction between expert tasks and nonexpert tasks is emphasized. The paper ends with experimental results obtained from a technical corpus, and a conclusion about current and future developments.     

文献耦合网络与同被引网络比较实证研究——以Scientometrics载文为例

[目的/意义]已有研究对文献耦合关系和同被引关系比较的研究较少，本文比较两种关系在文献间建立联系的差异，并且比较耦合/同被引强度与文献相似度的相关性，分析耦合分析和同被引分析各自更适合哪些方面的应用。[方法/过程]根据复杂网络理论，构建文献耦合网络和同被引网络，实证比较文献耦合网络和同被引网络的拓扑性质。利用QAP关联分析，研究耦合关系、同被引关系与文献内容相似度的关系。[结果/结论]网络拓扑结构分析表明，耦合关系在文献之间建立的联系更普遍而且更稳定，更利于检索被引用次数较少的大多数文献；同被引关系在高被引文献之间建立的联系更紧密，利于检索和确定领域内的核心文献。QAP关联分析表明耦合强度和文献相似度的相关性更强，在文献聚类分析研究主题时，耦合强度更可靠。     

主题检索系统的优化技术研究

本文首先分析了传统主题检索系统的弊端,然后提出了针对这些弊端的优化技术,包括全文主题词标引、概念标引、检索式语义分析、模式匹配等相关技术,使用这些技术可以发挥主题检索语言和自然语言检索各自的优点,使传统主题检索系统成为智能化,高层次的检索系统.     

百度“知道”对数字图书馆书目检索的启示

依据百度＂知道＂的工作原理,结合现阶段图书馆书目检索系统对提供知识服务的不足之处,通过分析图书馆面临的一些读者信息知识需求不断增加、信息知识需求重复和文献老化等问题,为了给图书馆读者提供更方便的服务和提高图书馆图书利用率,提出建立图书＂知道＂系统,并从系统的工作原理、悬赏机制、用人机制和服务模式等方面加以阐述。对比分析图书＂知道＂系统比百度＂知道＂系统在大学图书馆知识服务提供方面的优势。     

EARS: An online bibliographic search and retrieval system based on ordered explosion

Ergonomics Abstracts Retrieval System (EARS) is an online bibliographic information search and retrieval system using the hierarchical subject classification of the Ergonomics Abstracts. EARS is designed using an inverted file organization and is implemented on CDC-Cyber. The data base of abstracts is organized using a fixed-length record format, where each logical record corresponds to a variable number of fixed-length physical records. Accordingly, an index for the identification of physical records from the logical records is used. The data base is inverted on a three-level hierarchical classification scheme and postings files are used for data base inversion. The data base is accessed after selectively traversing a 4-layer structure of indexes and postings files. EARS provides facilities to perform combinations of searches, limited searches, and certain editing functions. The system is currently used extensively by the Western New York Human Factors research community. The logical and physical designs of EARS, its interactive operational features, and its current expansions are described in this paper.     

利用分类法和主题法改善搜索引擎的性能

本文对Internet上的检索工具搜索引擎的工作机理和性能进行了全方位的探讨，指出了常见搜索引擎信息检索缺点。同时还指出了Meta搜索引擎、智能搜索引擎和代理搜索引擎虽然提高了网络信息检索的质量，但由于分类体系不统一，类目划分标准模糊，因而仍然未能从根本上改变搜索引擎主要以关键词（自然语言）作为检索入口的现状，不能实现分类检索与主题检索的一体化。要实现搜索引擎信息检索的突破，笔者认为有必要运用情报检索语言的理论和方法来完善因特网搜索引擎的性能，实现分类、主题一体化的检索机制，克服分类检索语言单纯以学科聚类、主题语言单纯以事物聚类的局限性。     

Matching MARC to a picture collection: Development of a computer format for medical illustrations

The national standard machine-readable bibliographic format for films was expanded and modified for use in cataloging a collection of medical illustrations at the University of California, San Francisco. SNOMED and MeSH subject terms are stored in the computer catalog records and used to produce precoordinated entry terms for an Anatomic Index and a Disease/Procedures Index to the collection.     

Towards an information retrieval language based on a relational view of data

Among the problems associated with modern information retrieval systems is the lack of any systematic approach to the design of query language interfaces. In this paper we attempt to show how a relationally organised data base is well suited to bibliographic data management, and how, given such a relational organisation it is possible to construct an interface which separates the query language from the physical representation of the data base. It is also shown how such a query language organisation may be usefully interfaced to existing retrieval systems. Finally a query language for retrieval applications is proposed.     

基于开源软件的全文搜索型OPAC系统设计与实现——以ILAS的集成开发为例

利用Lucene的全文索引和搜索技术,开发了与ILAS III集成的全文搜索型OPAC系统Bookle。介绍了Bookle的体系结构以及参数管理器、索引器、搜索器、用户接口等的设计与实现。Bookle系统实现了扩展书目信息的自动抓取并使之本地化,扩展了书目检索点,为读者提供了书目记录及其扩展书目信息的任意词全文搜索等服务,弥补了ILAS III OPAC的不足。     

古籍书目数据库的设计与开发

针对北京林业大学图书馆馆藏古籍面临的一些问题,提出了建设古籍书目数据库,并进行了系统功能和流程的设计及开发,阐述了部分特色功能的具体实现,并对系统实施后的运行情况进行了讨论。通过古籍书目数据库的建设,解决了存在的问题,便利了读者,加强了读者与图书馆的互动沟通。