Syntactic discovery is the discovery of resources based on the structure of the resources
Work on this concept is done in the following link:
Identify main issues in "keyword-based" discovery of data and services
Demonstrate how to discover over a catalogue service; and the discovery procedure in OGC CS-W
Perform discovery over some popular SDI (NSDI) portals like INSPIRE and GOS geoportals
Use "Full-text-based" discovery; open source and commercial search engines, its use in GI related applications
In progress (GI-N2K)