Ontology Development Tools

In order to support use of community based approach to building experimental ontologies and generation of supporting testbed resources applied to OMF based testbeds, ORBIT is using ​Tasor based server from ​Virtuona. Basic architecture of this proof-of-concept service is shown in Figure 1.

The service currently supports;

1. Importing XML service description and generating the corresponding set of resources.
2. Browsing the set of resources.
3. Loading new domain (NDL) and application specific ontologies.
4. Context and domain adaptation of the GUI.
5. Resolving semantic conflicts within the loaded services.
6. Semantic annotation of services.
7. Publishing the created semantics as an ontology as well as Rubi source code.
8. Command line access to the RESTful API.

Primary interraction with the service is through WEB browsers as shown in Figure 2.

Lifting

Lowering

Brief tutorial

Choosing working data set

DARPA Spectrum Challenge

ORBIT was chosen to host the ​DARPA Spectrum Challenge - a competition in designing radio systems that work well in (heavily) interference limited communication environments. These pages are used to disseminate information regarding the arena and various technical aspects of the challenge.

The desgins will be implemented in a software defined radio platform centered around radio development kit (RDK) that is based on ​Ettus Research ​USRP N210 and ​SBX RF Front-end. Each RDK is attached to one of the generation 3 nodes in the ORBIT main grid which is the main venue for the competition. In addition, number of sandboxes are available for code development. The actual spectrum challenge matches will be administered through use of ​OMF and OML frameworks.

Hurdles

First step in Spectrum Challenge is a three step qualification process that will be used to determine the Challenge contestants. The three hurdles are intended to demonstrate:

• Hurdle 1 - Understanding of basic ORBIT operation
• Hurdle 2 - Understanding of basic USRP/SDR radio operation
• Hurdle 3 - Design of radio systems capable of handling noisy environments

Wildcard tournament

The step is for the 24 wildcard teams that have opted to compete for three remaining positions in the DARPA Spectrum Challenge. The teams are competing against house bots by using the actual competition framework for both competitive and cooperative matches.

Preliminary round

Final round

AAAAA

a) Drag-and-drop semantic statements builder with auto-complete. b) Hierarchical browsing of services’ resources: All resources are clickable, draggable, and context sensitive. Knowledge pane presents convenient set of resources relevant for the last clicked resource. c) …