BASE (search engine)
BASE (Bielefeld Academic Search Engine) is a multi-disciplinary search engine to scholarly internet resources, created by Bielefeld University Library in Bielefeld, Germany. It is based on free and open-source software such as Apache Solr and VuFind. It harvests OAI metadata from institutional repositories and other academic digital libraries that implement the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH), and then normalizes and indexes the data for searching. In addition to OAI metadata, the library indexes selected web sites and local data collections, all of which can be searched via a single search interface.
Type of site
|Academic Internet search engine|
|Available in||Chinese (simplified), German, English, French, Spanish (Castilian), Polish, Greek, Ukrainian|
|Owner||Bielefeld University Library|
|Slogan(s)||More than 100 M documents!|
|Launched||June 24, 2004|
Users can search bibliographic metadata including abstracts, if available. However, BASE does not currently offer full text search. It contrasts with commercial search engines in multiple ways, including in the types and kinds of resources it searches and the information it offers about the results it finds. Results can be narrowed down using drill down menus (faceted search). Bibliographic data is provided in several formats, and the results may be sorted by multiple fields, such as by author or year of publication. Non-commercial services can integrate BASE search for free using an API. BASE becomes an increasingly important component of open access initiatives concerned with enhancing the visibility of their digital archive collections.
On 6 October 2016, BASE surpassed the 100 million documents threshold having indexed 100,183,705 documents from 4,695 content sources.
- Dirk Pieper: BASE Migration. In: InetBib. 18 May 2011. Retrieved 27 August 2013.
- Lochman, Martin (March 23, 2017). "Open Archives Initiative service providers: Enhancing the visibility of research in Malta". OpenScience. Retrieved 13 April 2017.
- Lossau, Norbert. 2004. "Search Engine Technology and Digital Libraries: Libraries Need to Discover the Academic Internet," D-Lib Magazine, Volume 10, Number 6, June 2004. doi:10.1045/june2004-lossau
- Summann, Friedrich and Norbert Lossau. 2004. "Search Engine Technology and Digital Libraries: Moving from Theory to Practice," D-Lib Magazine, Volume 10, Number 9, September 2004. doi:10.1045/september2004-lossau