== Semantic Data Access by Aduna & DFKI ==


To extract data and fulltext from various datasources and store them in systems like gnowsis or Aduna Metadata Server.


== Sourceforge Project ==

Administrators: Christiaan Fluit & Leo Sauermann
Source Code: Interfaces and standard implementations of the SeDAF

The source will contain all relevant information about semantic data extraction, everything that is needed to get starting with a fulltext and metadata extraction framework. Our intent is that developers can download a single distribution file with a fully working environment, that also includes adapter and extractor implementations. Developers can use this package to fill their lucene-based applications or other data stores.

The features of the framework will be:

    * easy to use: easy to learn, easy to code, easy to deploy in industrial projects
    * Extract fulltext from many common file formats and information systems like IMAP email servers
    * Extract metadata like author, date, subject and more from the data sources
    * open the data objects for viewing
    * Fully configurable framework, storing and editing config files is done through a SWING gui.
    * Pluggable architecture: can be easily extended, can be easily integrated to other projects.
    * Architecture based on industry standard OSGI
    * Compatible with RDF, but not solely based on it

Components in the framework are:

    * DataSource Interface
    * TextExtractor Interface
    * DataSource implementation for Filesystem
    * DataSource implementation for IMAP mail servers
    * TextExtractor implementation for everything we know: PDF, Word, Fulltext, excel
    * OSGI bindings and connector code
    * Configuration gui
    * Sample appication showing how to use it, with gui (=either Autofocus or Sesame or Gnowsis)
    * Metadata format description (RDFS schema) and example file for the metadata

Right from the beginning we will support the following file types:

    * Plain text
    * HTML
    * XML
    * PDF (Portable Document Format)
    * RTF (Rich Text Format)
    * Microsoft Word 97+
    * Microsoft Excel 97+
    * Microsoft Powerpoint 97+
    * Microsoft Works
    * OpenOffice 1.0+: Writer, Calc, Impress, Draw
    * StarOffice 6.0+: Writer, Calc, Impress, Draw
    * WordPerfect 5.x
    * Emails
    * IMAP Servers


== credits ==

The following third party libraries have helped making the metadata framework
the success that it is. These freely available libraries deserve
a lot of credit for that, and we highly recommend them to others
as well!

    * Gnowsis: http://www.gnowsis.org/
    * HtmlParser: http://htmlparser.sourceforge.net/
    * Idmeta: http://www.geocities.com/marcoschmidt.geo/
    * Jakarta Commons FileUpload: http://jakarta.apache.org/commons/fileupload/
    * Jakarta Lucene: http://jakarta.apache.org/lucene/
    * Jakarta POI: http://jakarta.apache.org/poi/
    * Java Look and Feel Graphics Repository: http://java.sun.com/developer/techDocs/hi/repository/
    * JavaBeans Activation Framework: http://java.sun.com/products/javabeans/glasgow/jaf.html
    * JavaMail API: http://java.sun.com/products/javamail/
    * JGoodies Looks: http://www.jgoodies.com/freeware/looks/
    * NGramJ: http://ngramj.sourceforge.net/
    * PDFBox: http://www.pdfbox.org/
    * Sesame: http://www.openrdf.org/
    * WinLAF: https://winlaf.dev.java.net/
    * Xpdf: http://www.foolabs.com/xpdf/

license
The SeDAF is published under a BSD or CPL compatible license.