basis of infromation retrival part 1 retrival tools
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This document discusses various tools for retrieving literature, including catalogs, indexes, registers, and online databases. It describes the purpose and format of each tool. Catalogs provide access to collections and contain descriptive metadata. Indexes arrange information alphabetically and by subject but do not provide location details. Registers function like catalogs for museum collections. Bibliographic databases contain searchable references to published works. Secondary publications abstract and index primary documents to help users find relevant information.
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basis of infromation retrival part 1 retrival tools
- 1. Chapter 4 Retrieval Tools for Literature
- 2. objectives Information retrieval Tools ◦ Catalogue ◦ Index ◦ Registers ◦ Online databases Medical Databases ◦ Secondary Publications Models of retrievals ◦ Keyword searching ◦ Boolean searching ◦ Proximity searching ◦ Citation searching Database and structure Knowledge
- 3. Information Retrieval Tools Are the Systems created for retrieval of information. Retrieval tools are essential as basic building blocks for a system that will organize recorded information that is collected by libraries, archives, museums, etc......
- 4. Basic Retrieval Tools Catalogs Indexes Bibliographies Registers Online Databases Secondary publications
- 5. Catalogue originating in ancient times also Catalogs provide access to individual items within collections of information sources (books, videocassettes, computer files, etc...... Contains physical description, classification, and subject analysis.
- 6. Access points are determined, subject headings are assigned, and authority control terms are applied. e.g. OPAC –(online Public Access Catalogue)of SMU Library, NLM- national Library of Medicine.
- 9. Book catalogue each publisher has its own set of ISBNs, ordering information, and relevant currency pricing
- 10. description of catalogue Format is constructed with predetermined standard format and rules ◦ AACR2 ◦ GILS. ◦ Dublin Core
- 11. AACR2(Anglo-American Cataloguing Rules) - Used in library, archives, and some museum collections. AACR and its allied products are published jointly by the American Library Association, the Canadian Library Association, and the Chartered Institute of Library and Information Professionals. .
- 12. GILS -Government Information Locator Service Used for some government information. Locators used for the linking ◦ Locator - an information resource that identifies other information resources, describes the information available in those resources, and provides assistance in obtaining the information.
- 13. It is typically modeled as a database of locator records, each of which is a set of related data elements descriptive of various characteristics of an information resource. Locator also called metadata, abstracts, meta-information, directories etc.....
- 14. Dublin Core for some internet information sources. Metadata, xml, rdfn formats and other models, The Dublin Core Metadata Initiative (DCMI) HTML or XHTML , RDF/XML RDF (Resource Description Framework
- 15. Forms of Catalogues Book Card COM (Computer Output Microform) OPAC (Online Public Access Catalog)
- 16. Arrangements of Catalogs Alphabetically Authors Titles Subject Numerically.(numerical and alfanumericals) According to published date/year
- 17. Subject analysis. Classification ◦ Subject analysis. ◦ Classification Scheme (i.e. Dewey Decimal Classification System of the Library of Congress Classification System.
- 18. Indexes Provide access to the analyzed contents of "bibliographic entities“ i.e. articles in a journal, short stories in a collection, etc...... Indexes are not limited to what is available in a local setting, and they do not usually give location information
- 19. Indexes are available in print, CD-ROM, or on- line. Indexes are arranged in alphabetical order with entries offered for authors, titles, and subjects. There is not a standard of arrangement, organization, or online searching. Index Medicus –well developed index journal.
- 20. Bibliographic databases contains references to published literature, Reference include journal and newspaper articles, conference proceedings and papers, reports, government and legal publications, patents, books, etc
- 21. Bibliographic databases are machine-readable form of indexes and abstracts. Basically computerized secondary (index) journals. started in early 60’s. Database contains bibliographic information ◦ title of article, journal name, author, date of publication, volume #, issue, page #, etc.) about various types of publications and formats (print, video, audio, software, etc.).
- 22. Advantages in Bibilographic database –searching instead of browsing, –searching through long periods of time instead of one issue. Index Medicus of the National Library of Medicine and the Scientific and Technical Aerospace Reports of the National Aeronautics and Space Administration (NASA
- 24. Registers The primary control tools for museums, also referred to as an accession log. Registers function like catalogs, although they have additional kinds of access points, such as the identification of the object, the donor, a history of association (i.e. where or with whom previously owned the item) and any insurance related information.
- 25. An identification number (accession number) is assigned. The accession record becomes one or more files that help to provide organization to a museum's collection.
- 26. Secondary publications •The oldest of “modern” information tools. •Designed to help users find primary documents. •“Pointers” to primary documents were bibliographic records.
- 27. Users were directed to bibliographic records ◦ –from abstracts of primary documents (abstract journals), ◦ –from subject description of primary documents with key-words or key- phrases (index journals).