Abstract
This work presents a use case of building a data visualization interface for open-access repositories. The case in the analysis is the Brazilian Digital Library of Theses and Dissertations (BDTD). From the almost 670,000 records of BDTD, one applies statistical methods using the language R. One of the visualization packages of R is called Shiny, which makes it easy to build interactive web applications straight from R. Through the app, a user can visualize data in a fast and customizable way. It could help to keep track of metadata and usage statistics over the repositories and also can be applied to discovering scientific information, such as bibliographic data and lists of specialists in a certain research domain. These data visualization tools can stimulate others to create open repositories and join either national, regional or international repositories networks.
Highlights
The Brazilian Digital Library of Theses and Dissertations (BDTD) is a network of repositories of theses and dissertations. It aggregates records of more than a hundred and ten Brazilian institutions that contribute with an amount of almost 670.000 documents [1]. This national consortium is the second largest presented in the Networked Digital Library of Theses and Dissertations (NDLTD) [2]
BDTD was created in 2002 with a small set of brazilian institutions. The foundations of this consortium included the development of a technological tool for the implementation of local libraries of theses and dissertations, named System of Electronic Publications of Theses and Dissertations (TEDE) [3], and a national metadata standard for description of theses and dissertations, named MTD-BR, based on the international Electronic Theses and Dissertations Metadata Standard (ETD-MS) [4]
A modern description of TDs based on Qualified Dublin Core was developed. It adopted the use of the LA Referencia Software [7] as metadata harvester and the Vufind meta-searcher software [8] as the national BDTD portal
Summary
The Brazilian Digital Library of Theses and Dissertations (BDTD) is a network of repositories of theses and dissertations. BDTD was created in 2002 with a small set of brazilian institutions The foundations of this consortium included the development of a technological tool for the implementation of local libraries of theses and dissertations, named System of Electronic Publications of Theses and Dissertations (TEDE) [3], and a national metadata standard for description of theses and dissertations, named MTD-BR, based on the international Electronic Theses and Dissertations Metadata Standard (ETD-MS) [4]. A modern description of TDs based on Qualified Dublin Core was developed It adopted the use of the LA Referencia Software [7] as metadata harvester (transformer and validator) and the Vufind meta-searcher software [8] as the national BDTD portal. R provides a package that is called Shiny, which makes it easy to build interactive web applications straight from R This allows to implement standalone apps on a webpage or embed graphs into R Markdown documents. The main functionality of Shiny is to build visualization dashboards [12]
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