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	<title>SimHash - Revision history</title>
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	<updated>2026-05-15T16:00:27Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>http://en.zaoniao.it/index.php?title=SimHash&amp;diff=6841&amp;oldid=prev</id>
		<title>Admin: Created page with &quot;'''SimHash''' is a technique for quickly estimating how similar two sets are. The algorithm is used by the Google Crawler to fin...&quot;</title>
		<link rel="alternate" type="text/html" href="http://en.zaoniao.it/index.php?title=SimHash&amp;diff=6841&amp;oldid=prev"/>
		<updated>2019-07-16T08:46:03Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&amp;#039;&amp;#039;&amp;#039;SimHash&amp;#039;&amp;#039;&amp;#039; is a technique for quickly estimating how &lt;a href=&quot;/index.php?title=Similarity_measure&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Similarity measure (page does not exist)&quot;&gt;similar&lt;/a&gt; two sets are. The &lt;a href=&quot;/index.php?title=Algorithm&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Algorithm (page does not exist)&quot;&gt;algorithm&lt;/a&gt; is used by the &lt;a href=&quot;/index.php?title=Google&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Google (page does not exist)&quot;&gt;Google&lt;/a&gt; &lt;a href=&quot;/index.php?title=Web_crawler&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Web crawler (page does not exist)&quot;&gt;Crawler&lt;/a&gt; to fin...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;'''SimHash''' is a technique for quickly estimating how [[Similarity measure|similar]] two sets are. The [[algorithm]] is used by the [[Google]] [[Web crawler|Crawler]] to find near duplicate pages. It was created by [[Moses Charikar]].&lt;br /&gt;
&lt;br /&gt;
==Evaluation and benchmarks==&lt;br /&gt;
A large scale evaluation has been conducted by [[Google]] in 2006 to compare the performance of Minhash and [[Simhash]] algorithms. In 2007 Google reported using Simhash for duplicate detection for web crawling and using Minhash and [[Locality-sensitive hashing|LSH]] for [[Google News]] personalization.&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
*[[MinHash]]&lt;br /&gt;
*[[w-shingling]]&lt;br /&gt;
*[[Count-min sketch]]&lt;br /&gt;
&lt;br /&gt;
==Source==&lt;br /&gt;
&lt;br /&gt;
[http://wikipedia.org/ http://wikipedia.org/]&lt;br /&gt;
&lt;br /&gt;
[[Category:Cryptographic algorithms]]&lt;/div&gt;</summary>
		<author><name>Admin</name></author>
		
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