FEB 27th 2008
Semantic Web Search Engine Roundup
Published 2 years ago by James Simmons
Unlike traditional search engines, which crawl the Web gathering Web pages, Semantic Web search engines index RDF data stored on the Web and provide an interface to search through the crawled data. Below is a list of Semantic Web search engines that are currently under development.
- Semantic Web Search Engine (SWSE)
- SWSE is a search engine for the RDF Web on the Web, and provides the equivalent services a search engine currently provides for the HTML Web. The system explores and indexes the Semantic Web and provides an easy-to-use interface through which users can find the information they are looking for. Because of the inherent semantics of RDF and other Semantic Web languages, the search and information retrieval capabilities of SWSE are potentially much more powerful than those of current search engines. SWSE indexes RDF data from many sources, including OWL, RDF and RSS files. RSS2 is converted to RDF and they will be adding GRDDL sources soon. Developed by DERI Ireland.
- Sindice
- Sindice is a lookup index for Semantic Web documents built on data intensive cluster computing techniques. Sindice indexes the Semantic Web and can tell you which sources mention a resource URI, IFP, or keyword, but it does not answer triple queries. Sindice currently indexes over 20 million RDF documents. Developed by DERI Ireland.
- Watson
- Allows you to search through ontologies and semantic documents using keywords. At the moment, you can enter a set of keywords (e.g. "cat dog old_lady"), and obtain a list of URIs of semantic documents in which the keywords appear as identifiers or in literals of classes, properties, and individuals. You can also use wildcards in the keywords (e.g., "ca? dog*"). Developed by KMi, UK.
- Yahoo! Microsearch
- Microsearch is Yahoo!'s stab at Semantic Web search and provides a richer search experience by combining traditional search results with metadata extracted from Web pages. Indexes RDF, RDFa and Microformats crawled from the Web. Microsearch will soon be adding support for GRDDL.
- Falcons
- Falcons is a keyword-based search engine for the Semantic Web, equipped with browsing capability. Falcons provides keyword-based search for URIs identifying objects and concepts (classes and properties) on the Semantic Web. Falcons also provides a summarization for each entity (object, class, property) for rapid understanding. Falcons currently indexes 7 million RDF documents and allows you to search through 34,566,728 objects. Developed by IWS China.
- Swoogle
- Searches through over 10,000 ontologies. 2.3 million RDF documents indexed, currently including those written in RDF/XML, N-Triples, N3(RDF) and some documents that embed RDF/XML fragments. Currently, it allows you to search through ontologies, instance data, and terms (i.e., URIs that have been defined as classes and properties). Not only that, it provides metadata for Semantic Web documents and supports browsing the Semantic Web. Swoogle also archives different versions of Semantic Web documents. Developed by the Ebiquity Group of UMBC.
- Semantic Web Search
- Powered by RDF Gateway, Intellidimension's proprietary platform for Semantic Web applications and agents. Developed by Intellidimension Inc.
- Zitgist Search
- The Zitgist Query Service simplifies the Semantic Data Web Query construction process with an end-user friendly interface. The user need not conceive of all relevant characteristics - appropriate options are presented based on the current shape of the query. Search results are displayed through an interface that enables further discovery of additional related data, information, and knowledge. Users describe characteristics of their search target, instead of relying entirely on content keywords.
About the author
It's my goal to help bring about the Semantic Web. I also like to explore related topics like natural language processing, information retrieval, and web evolution. I'm the primary author of Semantic Focus and I'm currently working on several Semantic Web projects.
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Post a comment
Posted by André Luís on March 17, 2008 at 8:09am
Yahoo! Microsearch is returning a 502 error. Is there any other place to try this out? I'm really looking forward to this... :)
Posted by James Simmons on March 18, 2008 at 3:56am
Working from my end, try it again.
James
Posted by Jerry Sheehan on April 22, 2008 at 1:46pm
Hey James,
Do you have any preference? I've used Swoogle and was impressed with the results, but I haven't used the others you mention here.
Great post by the way! Very informative
Posted by SWSFan on October 12, 2008 at 1:50am
Hey James,
Is there any search engine which searches semantic web services?
Do the above mentioned sites also discover web services?
Thanks
Posted by Paulino on November 10, 2008 at 1:54pm
Hello,
greetings from germany :)
Paulino
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Semantic is good eb search.
I have tried it.
It can be another alternative.
Posted by Ramesh on June 7, 2010 at 2:13am
james are working on semantic web mining.
can you share your experiences in exploring semantic web mining
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Posted by bob jones on July 26, 2010 at 2:20pm
Hey James until i had come across this article today i had never heard of these searches available.
I'm gonna spend som time playing with them now & see what they are all about.
Thanks alot for informing them to us all.
Bob
Posted by Peter on July 28, 2010 at 11:58pm
Hi James
Have no idea what you are talking about.lol
I did a search on "antioxidants" and your site came up. Weird!!
You techo guys certainly put the rest of us to shame.
Good Luck with your goals.
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Posted by Joe Rizzo on August 5, 2010 at 1:24pm
SWSFan, try Aardvark, I gave a try a few weeks ago, and it is just amazing..I believe that's the future of searching for information.
Posted by josh on August 10, 2010 at 8:45pm
Hey peter I also did a search for antioxidants and the site came up. lol Ill tell you what though semantic has got it going on. Lets hope swoogle can put google to shame, now that would be something
Posted by Ric Old on August 18, 2010 at 1:22pm
Good luck exploring related topics like natural language processing, information retrieval, and web evolution. Also thanks for the link.
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Out of curiosity, how do you think semantic web search will play in a not very distant world where search results based on data mined from the crowd (aka FaceBook) will rule.
Posted by Virility Ex on August 25, 2010 at 7:53pm
The search engine industry has really come down to 2 players: Bing and Gooogle, since Bing will now be providing search index information to Yahoo, I don't consider Yahoo a player in this industry anymore
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Posted by Herman, Seattle limo guy on August 26, 2010 at 8:07pm
I have used Swoogle and was impressed with the results, but I haven't used the others you mention here. Looks like I should to try.
Great article by the way! A lot of information.
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