Semantic Search



(web site still in construction ...)


1 Searching in Semantic Portals


Semantic Portal is the next generation of web portals that are powered by Semantic Web technologies for improved information sharing and exchange for a community of users. Current methods of searching in Semantic Portals are limited to keyword-based search using information retrieval (IR) techniques, ontology-based formal query and reasoning, or a simple combination of the two. We propose an enhanced model that tightly integrates IR with formal query and reasoning to fully utilize both textual and semantic information for searching in Semantic Portals. The model extends the search capabilities of existing methods and can answer more complex search requests. The ideas in a fuzzy description logic (DL) IR model and a formal DL query method are employed and combined in our model. Based on the model, a semantic search service is implemented and evaluated. The evaluation shows very large improvements over existing methods.

Related Paper: An Enhanced Model for Searching in Semantic Portals. in WWW2005.
Corresponding Presentation slides.

Downloads :
  • Our Lab's Intranet Portal Ontology/KB in OWL/RDF: Apex_Portal_0.99.owl (~700KB)
  • The Experiment System (including the above ontology and documents full text). (~15MB)
    • We have run it on RedHat Linux 9. Should be able to run in other Linux distro.
    • System requirement: Java 1.4.1; a LISP interpreter; Perl installed
Demo of the SPortS Semantic Portal:
Both of the portals are automatically generated from their corresponding ontology and knowledge base in OWL format without any manual customization (that is, the web page is quite raw). The ontology and knowledge base of AIFB SEAL portal is obtained from their web page: http://www.aifb.uni-karlsruhe.de/about.html

SPortS Related Papers: