== Aperture: Semantic Data Access by Aduna & DFKI ==

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

[wiki:ApertureLicense License]

[wiki:ApertureCredits Credits]


== 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