Monday 16 May 2016

Universiteit van Amsterdam (2016, May 12): Better search engine results thanks to new method



"How does Google decide which search results to display? Doctoral candidate Anne Schuth developed a new method by which dozens or even hundreds of search algorithms can be compared with each other simultaneously. This means that the best search algorithm can be selected faster than was previously possible. Schuth will obtain his PhD from the UvA on 27 May.
A search query can turn up many webpages – often in the millions – with possible answers. Search engines such as Google are continually developing new algorithms to sort through all of those pages. In his research, Anne Schuth focused on developing methods to compare these search algorithms efficiently.
Interleaving vs. multileaving
One of the methods currently being used for this purpose is called ‘interleaving’. In this method, two algorithms are compared by displaying their search results alternately in a single list of results intended for the search engine’s user. The user, who is then unable to see where the results came from, merely clicks on the result which gives the preferred answer. With interleaving, it is possible to determine which of the two search algorithms led to the desired answer and thus to conclude which was the better algorithm. By repeating this process with millions of users, a reliable conclusion can be drawn as to the more effective algorithm. [...]" READ MORE

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