The Prajna Project

The Prajna Project is a collection of tools and utility classes designed to provide a greater understanding of data and information. While many tools focus on gathering information and presenting it to users, there is less emphasis on deriving a true understanding of the data and gleaning additional information from it.

The Prajna project provides several primary functions, each designed to fit into a cohesive whole. Each of the following technologies is further described in the Prajna User Manual:

Visualization: Prajna includes a wide variety of classes for representing and visualizing information. This includes node-link diagrams, trees, and other designs for arranging information.
Geographic Support: Prajna includes classes for common geographic functions, such as map displays, projections, and geographic filtering.
Data Access: Prajna includes powerful representation for accessing and representing data from a variety of data sources. Prajna can internally store this information in a conceptual graph, tree, or grid of information in addition to the typical Java collections
Ontologies and Semantic Web: Prajna includes a powerful set of java classes that support ontologies and semantic reasoning. These classes include support for RDF, OWL, SPARQL, and related technologies.
Text Analysis: Prajna includes interfaces and classes to assist with text analysis, including entity extraction, synonyms, and phrase chunking. It relies upon external information sources and applications for the computation, but provides a convenient interface to access these functions.
GUI Widgets: Prajna includes several lightweight Graphical User Interface widgets designed for easy use, and more advanced GUI components to support the other components of Prajna.

The Prajna project consists a main project, which contains the core classes and several implementations. It also includes several software bridges, each of which links Prajna to a commercial or another open source project.

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Publications and Awards

Prajna was presented at the IEEE Visualization Conference 2008, as part of the Knowledge Assisted Visualization workshop. It was also used in contest entries for the VAST 2008 Challenge, and the Cell Phone Mini-Challenge entry won an award for Effective Toolkit Integration. In 2009, it was used as the foundation for the VAST 2009 Challenge for internet traffic, winning an award for Excellent Analysis Facilitated by a Customizable Toolset.

Prajna: a Novel Architecture for Developing Applications for Knowledge Representation, Knowledge Assisted Visualization Workshop, IEEE Visualization Conference 2008. [PowerPoint Slides]
Solving the Cell Phone Calls Challenge with the Prajna Project, Proceedings of the IEEE Symposium on Visual Analytics Science and Technology, 2008.
Merging Visual Analysis with Automated Reasoning: Using Prajna to Solve the Traffic Challenge, Proceedings of the IEEE Symposium on Visual Analytics Science and Technology, 2009.
E. Swing, “Prajna: Adding Automated Reasoning to the Visual-Analysis Process”. IEEE Computer Graphics & Applications, 30(1), pp. 50-58. doi: http://doi.ieeecomputersociety.org/10.1109/MCG.2010.15

About this project:

The Prajna Project was registered on SourceForge.net on Oct 14, 2008. Prajna is a Java-based open source toolkit featuring knowledge representation, visualization, geographic displays, data fusion, ontologies, and semantic reasoning. It combines these diverse technologies into a cohesive toolkit for enhancing information discovery and reasoning.

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To join this project, please contact the project administrators of this project, as shown on the project summary page.

Get the Source Code:

Source code for this project may be available as downloads or through one of the SCM repositories used by the project, as accessible from the project develop page.