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Vivisimo clusters on the fly the snippets/titles returned by any kind of search engine and extracts cluster-annotations automatically from the text (in this respect it is completely different from NorthernLight).
It can be hooked up in ten minutes to any intranet/extranet/web search engine and runs in about 60ms for 100 documents (all the code is written in C).
Our main focus has been on generating short, crisp and understandable annotations and that's a key part of the clustering algorithm (the usual way is too create groups based on mathematical properties and then try to annotate them, our approach has been to create groups based on how well they can be described)
Yes it's still in Beta, mostly because of the Javascript used to represent the tree. It's hard to do some complex Javascript that runs on every browser/platform combination. Right now it's working on IE/Netscape on Unix and Windows... we dont have an easy access to Mac machines but it should work on Netscape/Mac soon (IE/Mac is a real problem...)... we didnt try on Opera. We'll also release a Javascript free as well as a frame free version very soon.
If you have any question, I'll be happy to give more details.
"world's largest manufacturers of mobile phones "
was all highlighted when I searched on Nokia. I can understand the "mobile phones" part of it, but not the "world's largest manufacturers" part.
-G
The theory is pretty much like Topic at the U of Toronto or the Web Page Reputation Calculator at a beloved site near you.
One possible way it could work:
You enter a search word:
They do the search on Alta under that word.
Alta returns 100-1000 or so results.
They "index" those results by looking at the keyword density of the the results and throwing out the fluff (stop) words.
They then turn around and search on those top words and sort the whole mess into something presentable for the user.
What is really new here is the presentation method. Although I am no fan of proprietary javascript, theirs is an excellent usage of a fresh technique.
This is my favourite search, soap [vivisimo.com].
BTW, don't forget us little people when you are rich and famous. ;)
vivisimo, check your local email, link at the top of the page.
Press Release [biz.yahoo.com]