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Because they say they've improved it: Until this week, we relied exclusively on the relevance algorithms provided by our partner Picsearch, which provides the roughly 500 million-image index for Ask Jeeves.

Now we've added some of our own search flavor to the mix. Picture/Image Search is what computer science types like to call a "hard problem." With pictures, as compared to web pages, there's a lot less textual information to go on when it comes to matching the best images to a user's query. So we spent a lot of time in our labs working on some new algorithms for delivering substantially better picture results than before.

I've never tried Ask for image search, im enjoying Yahoo's new enhancements though, and out of curiosity and fairness i'll give Jeeves a bash later today...

Ask Jeeves blog post: Gettin' the Picture, AJ Style

Nick Wilson is the publisher and founder of Threadwatch.org.

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