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Wednesday, May 16, 2012

Search Listings

  • More domain diversity. Sometimes search returns too many results from the same domain. This change helps surface content from a more diverse set of domains.
  • Categorize paginated documents. Sometimes, search results can be dominated by documents from a paginated series. This change helps surface more diverse results in such cases.
  • Country identification for webpages. Location is an important signal we use to surface content more relevant to a particular country. For a while we've had systems designed to detect when a website, subdomain, or directory is relevant to a set of countries. This change extends the granularity of those systems to the page level for sites that host user generated content, meaning that some pages on a particular site can be considered relevant to France, while others might be considered relevant to Spain.
  • Disable salience in snippets. This change updates our system for generating snippets to keep it consistent with other infrastructure improvements. It also simplifies and increases consistency in the snippet generation process.
  • More text from the beginning of the page in snippets. This change makes it more likely we'll show text from the beginning of a page in snippets when that text is particularly relevant.
  • Tweak to trigger behavior for Instant Previews. This change narrows the trigger area for Instant Previews so that you won't see a preview until you hover and pause over the icon to the right of each search result. In the past the feature would trigger if you moused into a larger button area.
  • Better query interpretation. This launch helps us better interpret the likely intention of your search query as suggested by your last few searches.
  • News universal results serving improvements. This change streamlines the serving of news results on Google by shifting to more unified system architecture.
  • More efficient generation of alternative titles. We use a variety of signals to generate titles in search results. This change makes the process more efficient, saving tremendous CPU resources without degrading quality.
  • More concise and/or informative titles. We look at a number of factors when deciding what to show for the title of a search result. This change means you'll find more informative titles and/or more concise titles with the same information.
  • "Sub-sitelinks" in expanded sitelinks. This improvement digs deeper into megasitelinks by showing sub-sitelinks instead of the normal snippet.
  • Better ranking of expanded sitelinks. This change improves the ranking of megasitelinks by providing a minimum score for the sitelink based on a score for the same URL used in general ranking.
  • Sitelinks data refresh. Sitelinks (the links that appear beneath some search results and link deeper into the site) are generated in part by an offline process that analyzes site structure and other data to determine the most relevant links to show users. We've recently updated the data through our offline process.
  • Less snippet duplication in expanded sitelinks. We've adopted a new technique to reduce duplication in the snippets of expanded sitelinks.

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