Keyword Stuffing Classifier, Cateogorize Paginated Documents and 51 More Google Search Iimprovement in April 2012

Google in April last month had launched 53+ search releated improvements. With out further ado, here's the list search impromvements for April:Categorize paginated documents [launch codename "Xirtam3", project codename "CategorizePaginatedDocuments"] change helps surface more diverse results in such cases.More language-relevant navigational results. [launch codename "Raquel"] This change takes into account language to help return the […]

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Google in April last month had launched 53+ search releated improvements. With out further ado, here's the list search impromvements for April:

  • Categorize paginated documents [launch codename "Xirtam3", project codename "CategorizePaginatedDocuments"] change helps surface more diverse results in such cases.
  • More language-relevant navigational results. [launch codename "Raquel"] This change takes into account language to help return the most relevant navigational results. "For navigational searches when the user types in a web address, such as [], we generally try to rank that web address at the top. However, this isn't always the best answer. For example, is a Dutch page, but many users are actually searching in Portuguese and are looking for the Brazilian email service,," explains Matt Cutts.
  • Country identification for webpages [launch codename "sudoku"] 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.
  • Anchors bug fix [launch codename "Organochloride", project codename "Anchors"] change fixes a bug related to our handling of anchors.
  • More domain diversity [launch codename "Horde", project codename "Domain Crowding"] change helps surface content from a more diverse set of domains.
  • Google released 53 Search improvements in April 2012More local sites from organizations [project codename "ImpOrgMap2"] change makes it more likely you'll find an organization website from your country (e.g. for Mexico rather than
  • Improvements to local navigational searches [launch codename "onebar-l"] "For searches that include location terms, e.g. [dunston mint seattle] or [Vaso Azzurro Restaurant 94043], we are more likely to rank the local navigational homepages in the top position, even in cases where the navigational page does not mention the location," Cutts said.
  • Improvements to how search terms are scored in ranking [launch codename "Bi02sw41"] One of the most fundamental signals used in search is whether and how your search terms appear on the pages you're searching. This change improves the way those terms are scored.
  • Disable salience in snippets [launch codename "DSS", project codename "Snippets"] change updates Google 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 [launch codename "solar", project codename "Snippets"] change makes it more likely Google will show text from the beginning of a page in snippets when that text is particularly relevant.
  • Smoother ranking changes for fresh results [launch codename "sep", project codename "Freshness"] change applies a more granular classifier, leading to more nuanced changes in ranking based on freshness.
  • Improvement in a freshness signal [launch codename "citron", project codename "Freshness"] change is a minor improvement to one of the freshness signals which helps to better identify fresh documents.
  • No freshness boost for low-quality content [launch codename "NoRot", project codename "Freshness"] Google modified a classifier we use to promote fresh content to exclude fresh content identified as particularly low-quality.
  • Tweak to trigger behavior for Instant Previews 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.
  • Sunrise and sunset search feature internationalization [project codename "sunrise-i18n"] Google internationalized the sunrise and sunset search feature to 33 new languages, so now you can more easily plan an evening jog before dusk or set your alarm clock to watch the sunrise with a friend.
  • Improvements to currency conversion search feature in Turkish [launch codename "kur", project codename "kur"] Google launched improvements to the currency conversion search feature in Turkish.
  • Improvements to news clustering for Serbian [launch codename "serbian-5"] change improves clustering in Serbian by better grouping articles written in Cyrillic and Latin. Google also has improved our use of "stemming" -- a technique that relies on the "stem" or root of a word.
  • Better query interpretation change helps Google better interpret the likely intention of your search query as suggested by your last few searches.
  • News universal results serving improvements [launch codename "inhale"] change streamlines the serving of news results on Google by shifting to a more unified system architecture.
  • UI improvements for breaking news topics [launch codename "Smoothie", project codename "Smoothie"] Google improved the user interface for news results when you're searching for a breaking news topic. You'll often see a large image thumbnail alongside two fresh news results.
  • More comprehensive predictions for local queries [project codename "Autocomplete"] change improves the comprehensiveness of autocomplete predictions by expanding coverage for long-tail U.S. local search queries such as addresses or small businesses.
  • Improvements to triggering of public data search feature [launch codename "Plunge_Local", project codename "DIVE"] launch improves triggering for the public data search feature, broadening the range of queries that will return helpful population and unemployment data.
  • Adding Japanese and Korean to error page classifier. [launch codename "maniac4jars", project codename "Soft404"] "We've signals designed to detect crypto 404 pages (also known as "soft 404s"), pages that return valid text to a browser, but the text only contains error messages, such as "Page not found." It's rare that a user will be looking for such a page, so it's important we be able to detect them. This change extends a particular classifier to Japanese and Korean," Cutts explains.
  • More efficient generation of alternative titles. [launch codename "HalfMarathon"] 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 [launch codename "kebmo"] change let you find more informative titles and/or more concise titles with the same information.
  • Fewer bad spell corrections internationally [launch codename "Potage", project codename "Spelling"] "When you search for [mango tea], we don't want to show spelling predictions like "Did you mean 'mint tea'?" We have algorithms designed to prevent these "bad spell corrections" and this change internationalizes one of those algorithms," explains Cutts.
  • More spelling corrections globally and in more languages. [launch codename "pita", project codename "Autocomplete"] "Sometimes autocomplete will correct your spelling before you've finished typing. We've been offering advanced spelling corrections in English, and recently we extended the comprehensiveness of this feature to cover more than 60 languages," Cutts informs.
  • More spell corrections for long queries. [launch codename "caterpillar_new", project codename "Spelling"] We rolled out a change making it more likely that your query will get a spell correction even if it's longer than ten terms.
  • More comprehensive triggering of "showing results for" goes international. [launch codename "ifprdym", project codename "Spelling"] In some cases when you've misspelled a search, say [pnumatic], the results you find will actually be results for the corrected query, "pneumatic." In the past, we haven't always provided the explicit user interface to say, "Showing results for pneumatic" and the option to "Search instead for pnumatic." We recently started showing the explicit "Showing results for" interface more often in these cases in English, and now we're expanding that to new languages.
  • "Did you mean" suppression goes international. [launch codename "idymsup", project codename "Spelling"] Sometimes the "Did you mean?" spelling feature predicts spelling corrections that are accurate, but wouldn't actually be helpful if clicked. For example, the results for the predicted correction of your search may be nearly identical to the results for your original search. In these cases, inviting you to refine your search isn't helpful. This change first checks a spell prediction to see if it's useful before presenting it to the user. This algorithm was already rolled out in English, but now we've expanded to new languages.
  • Spelling model refresh and quality improvements. Google refreshed spelling models and launched quality improvements in 27 languages.
  • Fewer autocomplete predictions leading to low-quality results. [launch codename "Queens5", project codename "Autocomplete"] Google rolled out a change designed to show fewer autocomplete predictions leading to low-quality results.
  • Improvements to SafeSearch for videos and images. [project codename "SafeSearch"] Google made improvements to our SafeSearch signals in videos and images mode, making it less likely you'll see adult content when you aren't looking for it.
  • Improved SafeSearch models [launch codename "Squeezie", project codename "SafeSearch"] change improves our classifier used to categorize pages for SafeSearch in 40+ languages.
  • Improvements to SafeSearch signals in Russian [project codename "SafeSearch"] change makes it less likely that you'll see adult content in Russian when you aren't looking for it.
  • Increase base index size by 15% [project codename "Indexing"] change increases the number of documents served by that index by 15%. "We're constantly tuning the size of our different indexes and changes may not always appear in these blog posts," Cutts said.
  • New index tier. [launch codename "cantina", project codename "Indexing"] "We keep our index in "tiers" where different documents are indexed at different rates depending on how relevant they are likely to be to users. This month we introduced an additional indexing tier to support continued comprehensiveness in search results," Cutts adds.
  • Backend improvements in serving. [launch codename "Hedges", project codename "Benson"]Google rolled out some improvements to its serving systems making them less computationally expensive and massively simplifying code.
  • "Sub-sitelinks" in expanded sitelinks [launch codename "thanksgiving"] improvement digs deeper into megasitelinks by showing sub-sitelinks instead of the normal snippet.
  • Better ranking of expanded sitelinks [project codename "Megasitelinks"] 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. [launch codename "Saralee-76"] 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. These updates happen frequently (on the order of weeks).
  • Less snippet duplication in expanded sitelinks. [project codename "Megasitelinks"] Google adopted a new technique to reduce duplication in the snippets of expanded sitelinks.
  • Movie showtimes search feature for mobile in China, Korea and Japan. Google expanded our movie showtimes feature for mobile to China, Korea and Japan.
  • No freshness boost for low quality sites. [launch codename "NoRot", project codename "Freshness"] Google modified a classifier they use to promote fresh content to exclude sites identified as particularly low-quality.
  • MLB search feature. [launch codename "BallFour", project codename "Live Results"] As the MLB season began, Google rolled out a new MLB search feature.
  • Spanish football (La Liga) search feature provides scores and information about teams playing in La Liga.
  • Formula 1 racing search feature. [launch codename "CheckeredFlag"] Google introduced a new search feature to help you find Formula 1 leaderboards and results.
  • Tweaks to NHL search feature. Google improved the NHL search feature so it's more likely to appear when relevant.
  • Keyword stuffing classifier improvement. [project codename "Spam"] This change made the Google's keyword stuffing classifiers which is designed to detect when a website is keyword stuffing better.
  • More authoritative results. Google tweaked a signal they use to surface more authoritative content.
  • Better HTML5 resource caching for mobile. Google improved caching of different components of the search results page, dramatically reducing latency in a number of cases.

Google has confirmed Panda algorithm refresh that took place on Friday, April 27th. This was an unusual update being that Panda 3.5 was released on April 19th on the day Google announced Penguin Update.

A Google Spokesperson said:

"We're continuing to iterate on our Panda algorithm as part of our commitment to returning high-quality sites to Google users. This most recent update is one of the over 500 changes we make to our ranking algorithms each year."