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"Last night, Google announced a 50 changes they made to search over the past month or so.  Prior to this, 40 changes in February, then 17 changes in January of this year.Matt McGee summarized the most important changes, as he sees fit, which include anchor text changes, image search changes, indexing symbols, navigation query changes and more.One thing that I think really stands out is this one: Improvements to processing for detection of site quality. [launch codename \"Curlup\"] We\u2019ve made some improvements to a longstanding system we have to detect site quality. This improvement allows us to get greater confidence in our classifications.Here is the full list for the most recent updates:Autocomplete with math symbols.\r\nImprovements to handling of symbols for indexing.\r\nBetter scoring of news groupings.\r\nSitelinks data refresh.\r\nImprovements to autocomplete backends, coverage.\r\nBetter handling of password changes.\r\nBetter indexing of profile pages.\r\nUI refresh for News Universal.\r\nImprovements to results for navigational queries.\r\nHigh-quality sites algorithm data update and freshness improvements.\r\nLive results for UEFA Champions League and KHL.\r\nTennis search feature.\r\nMore relevant image search results.\r\nFresher image predictions in all languages.\r\nSafeSearch algorithm tuning.\r\nTweaks to handling of anchor text.\r\nSimplification to Images Universal codebase.\r\nBetter application ranking and UI on mobile.\r\nImprovements to freshness in Video Universal.\r\nFewer undesired synonyms.\r\nBetter handling of queries with both navigational and local intent.\r\nImprovements to freshness.\r\nImprovements to processing for detection of site quality.\r\nBetter interpretation and use of anchor text.\r\nBetter local results and sources in Google News.\r\nDeprecating signal related to ranking in a news cluster.\r\nFewer \"sibling\" synonyms.\r\nBetter synonym accuracy and performance.\r\nRetrieval system tuning.\r\nLess aggressive synonyms.\r\nUpdate to systems relying on geographic data.\r\nImprovements to name detection.\r\nUpdates to personalization signals.\r\nImprovements to Image Search relevance.\r\nRemove deprecated signal from site relevance signals.\r\nMore precise detection of old pages.\r\nTweaks to language detection in autocomplete.\r\nImprovements in date detection for blog/forum pages.\r\nMore predictions in autocomplete by live rewriting of query prefixes.\r\nExpanded sitelinks on mobile.\r\nMore accurate short answers.\r\nMigration of video advanced search backends.\r\n+1 button in search for more countries and domains.\r\nLocal result UI refresh on tablet.I count 44 updates here...There are several places this is being discussed such as at Google on Google+, Matt Cutts on Google+, HackerNews and WebmasterWorld.Lots of things here, some of them we covered previous in our April Google Webmaster report.Forum discussion at Google on Google+, Matt Cutts on Google+, HackerNews and WebmasterWorld."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-quality-changes-march-14969.html>