Searching Digital Libraries
نویسنده
چکیده
HISTORICAL BACKGROUND The initial efforts to standardize and facilitate searching of digital libraries date back to the 1970s, when the development of the Z39.50 protocol started. The Z39.50 protocol is an ANSI standard and defines how to search and retrieve items from a remote database catalog. The Z39.50 protocol was widely deployed within library environments, allowing users to perform searches to remote libraries. With the advent of the Web, libraries started digitizing and making contents available on the Web, and the Z39.50 protocol started losing its importance. Many libraries made their content “searchable” through standard Web forms, allowing users to search and retrieve content using simply a Web browser. However, due to the lack of a link structure, the contents of the libraries remained “hidden” from the modern search engine crawlers, forming part of the “Hidden-Web” (also known as Deep Web, or Invisible Web). Searching across multiple Hidden Web databases, despite the tremendous progress since 2000, is still an open research problem. However, achieving interoperability across all Web databases is inherently harder than achieving interoperability across library databases, which are relatively more homogeneous. Therefore, a set of efforts focused on introducing protocols to facilitate integrating and searching digital libraries. The Open Archives Initiative focused on defining a protocol for exporting metadata about the objects in the collections hosted by each library. The SRU protocol aims to modernize the Z39.50 by making it similar to modern Web services. Such efforts allow programmers to leverage their existing skills and develop easier tools for the library market.
منابع مشابه
Using Interactive Search Elements in Digital Libraries
Background and Aim: Interaction in a digital library help users locating and accessing information and also assist them in creating knowledge, better perception, problem solving and recognition of dimension of resources. This paper tries to identify and introduce the components and elements that are used in interaction between user and system in search and retrieval of information in digital li...
متن کاملContext-aware systems: concept, functions and applications in digital libraries
Background and Aim Among the places that context-aware systems and services would be very useful, are libraries. The purpose of this study is to achieve a coherent definition of context aware systems and applications, especially in digital libraries. Method: This was a review article that was conducted by using Library method by searching articles and e-books on websites and databases. Results:...
متن کاملA Systematic Review of Data Mining Applications in Digital Libraries
Purpose: Study aimed to identify the applications of data mining in the provision of services, collection and management of digital libraries. Methodology: This is an applied study in terms of purpose and in terms of method is qualitative research that have been done by systematic review method. For this purpose, articles have been obtained by searching databases of Springer, Emerald, ProQuest,...
متن کاملSearching digital music libraries 1 Running head: SEARCHING DIGITAL MUSIC LIBRARIES Searching digital music libraries
There has been a recent explosion of interest in digital music libraries. In particular, interactive melody retrieval is a striking example of a search paradigm that differs radically from the standard full-text search. Many different techniques have been proposed for melody matching, but the area lacks standard databases that allow them to be compared on common grounds—and copyright issues hav...
متن کاملDesign of a Search Engine for Cross-Library Search Based on Metalogy Metadata
Searching information across digital libraries is important for digital library utilization. With such functionality, users can find related information in a more comprehensive manner. In this paper, we present the design of a search engine providing a uniform user interface for crosslibrary searching. The design of the search engine is based on a XML/DTD mapping approach to facilitate cross-li...
متن کامل