Saturday, January 23, 2010

How Does Search Engine Identify Synonyms?

Recent post on Google Blog gives an overview in to how Google interprets synonyms in search queries and results.

The post offers a rare insight into Google’s algorithms and a deeper understanding into how system is understanding synonms. The post discuss about how the computer program understands synonyms and analysis about synonyms impact and quality.
According to the post, “Google measurements show that synonyms affect 70 percent of user searches across the more than 100 languages they supports". A test was conducted on a set of queries and analyzed how precise the synonyms were and the result was, For every 50 queries where synonyms significantly improved the search results, they had only one truly bad synonym.

Google has recently made changes to how synonyms are displayed. Historically, synonyms such as stemming variants were made bold — like the word "picture" for a search with the word "pictures." But Now, Google have extended this to words that their algorithms confidently think mean the same thing, even if they are spelled nothing like the original term. This helps you to understand why that result is shown, especially if it doesn't contain your original search term. Example: If you search [pictures developed with coffee] you can even see the result that has the word "photos" bolded in the title.

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