Browsing by Author "Pal, Jiban K"

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    Practical Framework for Harvesting Standard Metadata in DigitalRepository
    (INFLIBNET Center, 2009-02-25) Pal, Jiban K
    Metadata research drastically improved the resource discovery mechanism in accessing information from a large distributed environment. Even technological capabilities permit multiple metadata schemas for standardizing the structure and content of indexing information towards an efficient resource discovery. This paper presents the issues on standard metadata in order to pursue digital repositories and dynamic web pages. It proposes various means of harvesting metadata using optimum standards and protocols. It also enumerates inherent mechanisms for metadata harvesting in DSpace enabled repositories through various harvesting tools; and evaluates XML as current popular choice for metadata harvesting (OAI-PMH) and exchange. System support to multiple metadata formats in DSpace has been discussed thoroughly. Finally it recognizes interoperability and extensibility functions that are being realized increasingly towards a long-term management and preservation of digital objects. However the glimpses of metadata production tools (newer & developed) could accelerate the digital repository initiatives with an increasing popularity of open access movement in real world.
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    Progress in Web-Cataloguing Using Standard Metadata Schemas
    (INFLIBNET Centre, 2006-11-09) Pal, Jiban K; Pal, Falguni
    Web cataloguing’ or ‘metadata creation’ is an effective strategy to enhance the resource- discovery on digital collection that can be accomplished by standard metadata schema. Technological capabilities now allow multiple metadata schemas for discovering web resources. This paper aims to present the progress of web-cataloguing using ‘metadata’ and its impact on precision of search results, in discovering web resources. It also proposes various means of creating metadata in order to pursue with the large databases and/or dynamic web pages. Several metadata initiatives provide glimpses of recent activities on ‘metadata’. Here, an attempt has been made to discuss about different metadata schemas of which Dublin Core (DC) & MAachine Readable Cataloguing (MARC) seem to be widely accepted and used in cataloguing web resources. It also seems imperative to make a few modifications of the existing crosswalk between the DC & MARC-21 elements to be used in conversion of metadata from one into another. This discussion brings out the idea of OAI-PMH to make the metadata available to harvesters and attempts to explore the mechanism of DSpace for exposing metadata in a digital repository.
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    Search Algorithms – An Aid to Information Retrieval in Digital Libraries
    (INFLIBNET Centre, 2007-02-08) Pal, Jiban K; Pal, Falguni
    Information growth trends are global issues and are common to all. This paper presents the concept of ‘digital library’ emerged as a leading edge technological solution to the persistent problems in modern libraries. Convergence of digital library with the Internet phenomenally increases the availability of digital resources, across the globe. It examines the real situation, where the morass of web resources presents a formidable hurdle to effectively accessing the relevant information. However, in digital libraries it is more acute, as the documents in digital library environment are free-formatted, voluminous and multiple media types; virtually the situation demands for the efficient and effective indexing/ retrieval mechanism. This problem has led to the rise of efficient search algorithms, as a powerful tool for search and retrieval. Over the last few decades, a considerable number of search algorithms have been devised addressing the requirement of different applications in IR systems – like soundex, metaphone, phonex, stemming, and many more. These algorithms are deeply concerned with the process of sorting and searching, which provides an ideal framework for the application to information retrieval in digital collections as well as Internet. Here an attempt has been made to discuss about the most popular and useful search algorithms and their impact on precision of search results, in searching the digital archives.