GNOWSYS Studio

A collaborative workspace (studio) for constructing and publishing semantic knowledge networks and ontologies.

Features

The application is devided into two sub-apps. Gstudio and Objectapp. The former includes classes for organizing the network or constructing an ontology. The latter includes classes for holding the instances of object-types, process-types and system-types.

Gstudio Components

• Metatypes

  To hold Classes which have other classes as its members. e.g. "abstract noun", "adjective", "phylem", "class", "genus", "species" etc.

• Object types

  To hold Classes: e.g. "thing", "being", "living being", "animals", "cat", "place", "person" etc.

• Relation types

To define binary relations (object properties) between classes and objects. e.g., "part of", "friend of", "composed of", "located in" etc. * Attribute types

To define datatype properties for classes and objects. e.g., "population", "size", "length", "height", "first name", "phone number" etc.

• System types

  To bring together some of the classes into a system or an ontology, a collection of the types defined above for convenience. You can bring together the required classes, relations and attributes into

• Process types

  To define a process as prior and post states of classes or objects.

• Attributes

  To store attributes

• Relations

  To store binary relations

• Node Specification

  A node specified (described) by its relations or attributes or both.

• Relation Specification

  To create an expression using a relation with a subject, e.g., "friend of Tom", "components of a cell" etc.

• Attribute Specification

  To specify an attribute by a subject to say for example: population of India, color of a flower etc. These do not yeild a proposition but an expression, which can be used as a subject in another sentence.

• Expression

  Expression is more like a relation between two terms, but it does not yeild a proposition, e.g., "Researchers in India", "students residing in India" etc. It is modelled more like relation class, except that the result is not a proposition/triple.

• Union

  To define a class by a union relation between two or more classes.

• Complement

  To define a class as a compleemnt of two or more classes.

• Intersection

  To define a class as an intersection between two or more classes.

Objectapp Components

• Objects

  To hold the instances of Object types: "Mumbai", "Tom" etc.

• Systems

  To hold the instances of System types.

• Processes

  To hold the instances of processes.

Online Collaborative Platform

The application is built as a collaborative on line platform with the following features.

Version Control

All the changes by the users will be recorded. This feature is implemented using using django-reversion.

User Registration

Basic registration, authentication mechanism.

Network Navigation using SVG graphs

• neighbourhood graphs and concept graphs

Other Semantic Web features

• data in RDF format
• rdf feed to a triple store
• sparql endpoint

Features to be implemented

• export and import of standard knowledge representation languages: CL, OWL, XTM etc.

Features adopted from Django-Blog-Zinnia

The following features are adopted from django-blog-zinnia code base with a lot of gratitude. Thanks to an excellent codebase of django-blog-zinnia, which taught us best software development practices as well! After reviewing each feature for the purpose of semantic blogging, we will retain or extend the following features.

The features listed here are not thourougly tested. There is a likelyhood of misbehavior.

• Comments
• Sitemaps
• Archives views
• Related entries
• Private entries
• RSS or Atom Feeds
• Tags
• Advanced search engine
• Prepublication and expiration
• Editing in MarkDown, Textile or reStructuredText
• Widgets (Popular entries, Similar entries, ...)
• Spam protection with Akismet or TypePad
• Admin dashboard
• MetaWeblog API, xmlrpc
• Ping Directories
• Ping External links
• Bit.ly support
• Twitter support
• Gravatar support
• Django-CMS plugins
• Collaborative work
• Tags autocompletion
• Entry model extendable
• Pingback/Trackback support
• Blogger conversion utility
• WordPress conversion utility
• WYMeditor, TinyMCE and MarkItUp support
• Ready to use and extendables templates
• Windows Live Writer compatibility

Examples

A sandbox site will give you a preview of the application. Visit http://sbox.gnowledge.org/

Project Page

The project management is done from Savannah: https://savannah.gnu.org/projects/gnowsys/

Mailing list

Join this list if you are intersted in using or contributing as a hacker.

http://gnowledge.org/cgi-bin/mailman/listinfo/gnowsys-dev