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New Google algorithm may speed up indexing

The search engine Google could soon be cataloguing the world wide web up to five times faster, thanks to new software tweaks developed by Stanford University computer scientists.

At the heart of Google's software is the Page Rank algorithm. It ranks how important a web page is by counting the number of links that lead to it, with links from a page that itself receives a lot of links weighing more heavily. Its fast, high-quality results have made Google the world's most popular search engine.

Ranking the more than three billion web sites now online can currently take days with PageRank. An individually customised ranking "would now take 5000 computers five days to do. It's not feasible," says Stanford researcher Sepandar Kamvar.

But even speeding up the process enough to allow ranking based on broad topics could be useful, he says. For example, a comedy buff looking for Marx would find much more about Groucho than Karl, making the search even more accurate than before.

Source: New Scientist