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	<id>https://help18.whiz.me/index.php?action=history&amp;feed=atom&amp;title=Glossary%3ARetention</id>
	<title>Glossary:Retention - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://help18.whiz.me/index.php?action=history&amp;feed=atom&amp;title=Glossary%3ARetention"/>
	<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;action=history"/>
	<updated>2026-07-21T16:54:17Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=10926&amp;oldid=prev</id>
		<title>AlexL: Secure outbound links from glossary pages</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=10926&amp;oldid=prev"/>
		<updated>2020-08-14T07:02:58Z</updated>

		<summary type="html">&lt;p&gt;Secure outbound links from glossary pages&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 03:02, 14 August 2020&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;http&lt;/del&gt;://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Toolkit menu|Toolkit]] : [[Calendar]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;https&lt;/ins&gt;://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Toolkit menu|Toolkit]] : [[Calendar]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>AlexL</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9919&amp;oldid=prev</id>
		<title>SuperMemoHelp: Tools -&gt; Toolkit</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9919&amp;oldid=prev"/>
		<updated>2019-03-03T09:53:30Z</updated>

		<summary type="html">&lt;p&gt;Tools -&amp;gt; Toolkit&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 05:53, 3 March 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Tools &lt;/del&gt;menu|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Tools&lt;/del&gt;]] : [[Calendar]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Toolkit &lt;/ins&gt;menu|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Toolkit&lt;/ins&gt;]] : [[Calendar]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9699&amp;oldid=prev</id>
		<title>SuperMemoHelp at 00:12, 1 April 2017</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9699&amp;oldid=prev"/>
		<updated>2017-04-01T00:12:32Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 20:12, 31 March 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Tools menu|Tools]] : [[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Workload&lt;/del&gt;]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Tools menu|Tools]] : [[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Calendar&lt;/ins&gt;]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9295&amp;oldid=prev</id>
		<title>SuperMemoHelp at 08:41, 1 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9295&amp;oldid=prev"/>
		<updated>2016-06-01T08:41:09Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 04:41, 1 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;retention&lt;/del&gt;&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Retention&lt;/ins&gt;&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &amp;#039;&amp;#039;&amp;#039;Retention&amp;#039;&amp;#039;&amp;#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &amp;#039;&amp;#039;&amp;#039;retention&amp;#039;&amp;#039;&amp;#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &amp;#039;&amp;#039;&amp;#039;retention&amp;#039;&amp;#039;&amp;#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &amp;#039;&amp;#039;&amp;#039;Retention&amp;#039;&amp;#039;&amp;#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &amp;#039;&amp;#039;&amp;#039;[[Tools menu|Tools]] : [[Workload]]&amp;#039;&amp;#039;&amp;#039;)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:proportion of knowledge retained in memory at any given time. &amp;#039;&amp;#039;&amp;#039;Retention&amp;#039;&amp;#039;&amp;#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &amp;#039;&amp;#039;&amp;#039;retention&amp;#039;&amp;#039;&amp;#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &amp;#039;&amp;#039;&amp;#039;retention&amp;#039;&amp;#039;&amp;#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &amp;#039;&amp;#039;&amp;#039;Retention&amp;#039;&amp;#039;&amp;#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &amp;#039;&amp;#039;&amp;#039;[[Tools menu|Tools]] : [[Workload]]&amp;#039;&amp;#039;&amp;#039;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9047&amp;oldid=prev</id>
		<title>SuperMemoHelp at 17:58, 26 May 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=9047&amp;oldid=prev"/>
		<updated>2016-05-26T17:58:28Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 13:58, 26 May 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;&amp;lt;span id=&quot;retention&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039; - &lt;/del&gt;proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Tools menu|Tools]] : [[Workload]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;;&lt;/ins&gt;&amp;lt;span id=&quot;retention&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/ins&gt;proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the [[Glossary:Forgetting_index|forgetting index]] and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://super-memory.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the [[Glossary:Forgetting_index|forgetting index]] only when measured on [[Glossary:Item|items]] repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Tools menu|Tools]] : [[Workload]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=7648&amp;oldid=prev</id>
		<title>SuperMemoHelp at 19:36, 3 April 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=7648&amp;oldid=prev"/>
		<updated>2016-04-03T19:36:26Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 15:36, 3 April 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;&amp;lt;span id=&quot;retention&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&#039;&#039;&#039; - proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;forgetting index&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;]]. The &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;forgetting index&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039; &lt;/del&gt;refers to the probability of forgetting at the moment of a [[Glossary:Repetition|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;repetition&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;repetition&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;. For an exact formula linking the &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;forgetting index&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039; &lt;/del&gt;and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;supermemo&lt;/del&gt;.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039;&lt;/del&gt;forgetting index&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039; &lt;/del&gt;only when measured on items repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Tools menu|Tools]] : [[Workload]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;&amp;lt;span id=&quot;retention&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&#039;&#039;&#039; - proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[Glossary:Forgetting_index|forgetting index]]. The forgetting index refers to the probability of forgetting at the moment of a [[Glossary:Repetition|repetition]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next repetition. For an exact formula linking the &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Glossary:Forgetting_index|&lt;/ins&gt;forgetting index&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/ins&gt;and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;super-memory&lt;/ins&gt;.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Glossary:Forgetting_index|&lt;/ins&gt;forgetting index&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/ins&gt;only when measured on &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Glossary:Item|&lt;/ins&gt;items&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/ins&gt;repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Tools menu|Tools]] : [[Workload]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=1532&amp;oldid=prev</id>
		<title>WikiSysop: Fixing broken link(s) to the Glossary namespace</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=1532&amp;oldid=prev"/>
		<updated>2009-09-05T14:55:52Z</updated>

		<summary type="html">&lt;p&gt;Fixing broken link(s) to the Glossary namespace&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 10:55, 5 September 2009&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;&amp;lt;span id=&quot;retention&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&#039;&#039;&#039; - proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;#forgetting_index&lt;/del&gt;|&#039;&#039;&#039;forgetting index&#039;&#039;&#039;]]. The &#039;&#039;&#039;forgetting index&#039;&#039;&#039; refers to the probability of forgetting at the moment of a [[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;#repetition&lt;/del&gt;|&#039;&#039;&#039;repetition&#039;&#039;&#039;]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next &#039;&#039;&#039;repetition&#039;&#039;&#039;. For an exact formula linking the &#039;&#039;&#039;forgetting index&#039;&#039;&#039; and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://supermemo.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the &#039;&#039;&#039;forgetting index&#039;&#039;&#039; only when measured on items repeated on a single day (e.g. as displayed in &#039;&#039;&#039;[[Workload]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;&amp;lt;span id=&quot;retention&quot;&amp;gt;retention&amp;lt;/span&amp;gt;&#039;&#039;&#039; - proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Glossary:Forgetting_index&lt;/ins&gt;|&#039;&#039;&#039;forgetting index&#039;&#039;&#039;]]. The &#039;&#039;&#039;forgetting index&#039;&#039;&#039; refers to the probability of forgetting at the moment of a [[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Glossary:Repetition&lt;/ins&gt;|&#039;&#039;&#039;repetition&#039;&#039;&#039;]] while &#039;&#039;&#039;retention&#039;&#039;&#039; refers to the average recall probability between the last and the next &#039;&#039;&#039;repetition&#039;&#039;&#039;. For an exact formula linking the &#039;&#039;&#039;forgetting index&#039;&#039;&#039; and the &#039;&#039;&#039;retention&#039;&#039;&#039; see: [http://supermemo.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &#039;&#039;&#039;Retention&#039;&#039;&#039; equals 100% minus the &#039;&#039;&#039;forgetting index&#039;&#039;&#039; only when measured on items repeated on a single day (e.g. as displayed in &#039;&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Tools menu|Tools]] : &lt;/ins&gt;[[Workload]]&#039;&#039;&#039;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>WikiSysop</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=1182&amp;oldid=prev</id>
		<title>WikiSysop: Created page with &#039;&#039;&#039;&#039;&lt;span id=&quot;retention&quot;&gt;retention&lt;/span&gt;&#039;&#039;&#039; - proportion of knowledge retained in memory at any given time. &#039;&#039;&#039;Retention&#039;&#039;&#039; is greater than 100% minus the [[#forgetting_index|&#039;&#039;&#039;…&#039;</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Retention&amp;diff=1182&amp;oldid=prev"/>
		<updated>2009-06-18T10:00:48Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;#039;&amp;#039;&amp;#039;&amp;#039;&amp;lt;span id=&amp;quot;retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&amp;#039;&amp;#039;&amp;#039; - proportion of knowledge retained in memory at any given time. &amp;#039;&amp;#039;&amp;#039;Retention&amp;#039;&amp;#039;&amp;#039; is greater than 100% minus the [[#forgetting_index|&amp;#039;&amp;#039;&amp;#039;…&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;&amp;lt;span id=&amp;quot;retention&amp;quot;&amp;gt;retention&amp;lt;/span&amp;gt;&amp;#039;&amp;#039;&amp;#039; - proportion of knowledge retained in memory at any given time. &amp;#039;&amp;#039;&amp;#039;Retention&amp;#039;&amp;#039;&amp;#039; is greater than 100% minus the [[#forgetting_index|&amp;#039;&amp;#039;&amp;#039;forgetting index&amp;#039;&amp;#039;&amp;#039;]]. The &amp;#039;&amp;#039;&amp;#039;forgetting index&amp;#039;&amp;#039;&amp;#039; refers to the probability of forgetting at the moment of a [[#repetition|&amp;#039;&amp;#039;&amp;#039;repetition&amp;#039;&amp;#039;&amp;#039;]] while &amp;#039;&amp;#039;&amp;#039;retention&amp;#039;&amp;#039;&amp;#039; refers to the average recall probability between the last and the next &amp;#039;&amp;#039;&amp;#039;repetition&amp;#039;&amp;#039;&amp;#039;. For an exact formula linking the &amp;#039;&amp;#039;&amp;#039;forgetting index&amp;#039;&amp;#039;&amp;#039; and the &amp;#039;&amp;#039;&amp;#039;retention&amp;#039;&amp;#039;&amp;#039; see: [http://supermemo.com/articles/theory.htm#Retention Theoretical aspects of SuperMemo]. &amp;#039;&amp;#039;&amp;#039;Retention&amp;#039;&amp;#039;&amp;#039; equals 100% minus the &amp;#039;&amp;#039;&amp;#039;forgetting index&amp;#039;&amp;#039;&amp;#039; only when measured on items repeated on a single day (e.g. as displayed in &amp;#039;&amp;#039;&amp;#039;[[Workload]]&amp;#039;&amp;#039;&amp;#039;)&lt;/div&gt;</summary>
		<author><name>WikiSysop</name></author>
	</entry>
</feed>