Swoogle Demo @ ISWC 2004

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Swoogle Demo _at_ ISWC 2004

• Presented by ebiqity group _at_ UMBC
• Nov, 2004

Swoogle is a research project being carried out
by the ebiquity research group in the CSEE
Department at the University of Maryland
Baltimore County. Partial research support was
provided by DARPA contract F30602-00-0591 and by
NSF by awards NSF-ITR-IIS-0326460 and
NSF-ITR-IDM-0219649.
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Swoogle Demo (Nov, 2004, ISWC)
About Swoogle Swoogle is a metadata and search
engine for the semantic web. It discovers,
digests, and analyzes semantic web documents. It
helps users to find, browse and use ontologies
in the Semantic Web.
Demo Plan
Find Ontologies (Swoogle Search)
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• Digest Ontology
• doc view
• term view

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Find Terms (Ontology Dictionary)
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• Digest Term
• Class Properties
• Instance properties

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Browse Term index

• Swoogle Statistics
• Swoogle Today
• SWD per website

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Figure 1. Swoogle architecture

• Issues
• Data Independence
• Mismatch namespace ontology
• Open ontology engineering env.

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• Ontology Rank
• Swoogles top 10

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Submit URL
Figure 2. Semantic Web Concepts
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Find Ontologies by keywords

1. Select Documents (it is selected by default)
2. Select ontology only (it is selected by
   default)
3. Type some keywords
4. Click search button

Search Semantics The vocabulary of an ontology O
is a set of local names of URI references used by
O. We search for ontologies whose vocabulary
contains all the keywords. Keyword should be
atomic, i.e. it can not be split, e.g. SeaFood
contains two keywords sea and food.
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Digest Ontology (Document view)
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Digest Ontology (Term view)
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Find Terms (Ontology Dictionary)
Search Semantics By default, we look for terms
local name exactly matches the query keyword.
More constraints can be specified with prefix.
Lowercased!
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Digest Term Person
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Term Metadata An integrated definition
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• A Term has two types of metadata
• Class Properties those properties that
  modifies/annotates a class/property and can not
  be inherited to subclasses.
• (Instance) Properties facets of a class, the
  properties used with instances.

• (instance) property P of class C can be collected
  by
• ontologies. triples like (P rdfsdomain C)
• Instances triples like (_X rdftype C) (_X
  P _Y)

• Class Definition
• rdfssubClassOf -- foafAgent
• rdfslabel Person

• Properties (from SWO)
• foafmbox
• foafname

• Properties (from SWI)
• foafname
• dctitle

foafPerson
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Digest Term Person
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Browse Term index
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Swoogle Statistics (Swoogle Today)
Swoogle Today summarizes the current status of
Swoogle database
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Swoogle Statistics (Semantic Web Document per
Website)
Google estimate shows the amount of URLs which
are highly possible SWDs reported by google
search. However, google only return the first
1000 results.
This report is dynamically generated based on the
latest data, and it will take 5 to 10 seconds.
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Swoogles Top 10 )
Swoogle use PageRank like algorithm to rank
semantic web documents. Well-known ontologies are
highly ranked.
This report is dynamically generated based on the
latest data, and it will take 5 to 10 seconds.
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Submit your ontology to Swoogle
When you cant find your ontologies in Swoogle,
it may be the case that your ontologies are not
indexed by swoogle yet. Please submit it and
increase its visibility.
When your query fails
From site map