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		<title>HP's Information Aggregation Mechanism - Revision history</title>
		<link>https://pm.haifa.ac.il/index.php?title=HP%27s_Information_Aggregation_Mechanism&amp;action=history</link>
		<description>Revision history for this page on the wiki</description>
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		<lastBuildDate>Sun, 12 Apr 2026 11:56:51 GMT</lastBuildDate>
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			<title>Dorit.Geifman:&amp;#32;moved HP's IAM to HP's Information Aggregation Mechanism</title>
			<link>https://pm.haifa.ac.il/index.php?title=HP%27s_Information_Aggregation_Mechanism&amp;diff=90&amp;oldid=prev</link>
			<description>&lt;p&gt;moved &lt;a href=&quot;/index.php?title=HP%27s_IAM&quot; class=&quot;mw-redirect&quot; title=&quot;HP&amp;#039;s IAM&quot;&gt;HP&amp;#39;s IAM&lt;/a&gt; to &lt;a href=&quot;/index.php?title=HP%27s_Information_Aggregation_Mechanism&quot; title=&quot;HP&amp;#039;s Information Aggregation Mechanism&quot;&gt;HP&amp;#39;s Information Aggregation Mechanism&lt;/a&gt;&lt;/p&gt;

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		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 12:12, 12 May 2010&lt;/td&gt;
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			<pubDate>Wed, 12 May 2010 12:12:11 GMT</pubDate>			<dc:creator>Dorit.Geifman</dc:creator>			<comments>https://pm.haifa.ac.il/index.php?title=Talk:HP%27s_Information_Aggregation_Mechanism</comments>		</item>
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			<title>Dorit.Geifman at 12:04, 12 May 2010</title>
			<link>https://pm.haifa.ac.il/index.php?title=HP%27s_Information_Aggregation_Mechanism&amp;diff=89&amp;oldid=prev</link>
			<description>&lt;p&gt;&lt;/p&gt;

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		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 12:04, 12 May 2010&lt;/td&gt;
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		&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&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 colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;'''HP's Information Aggregation Mechanism (IAM)''' was initiated in 1996 by Caltech and Hewlett-Packard Laboratories in order to investigate the possibilities of implementing an information aggregation mechanism to ''[[:category:Predict|predict]]'' ''[[:Category:Business topics|product and sales related events]]'' in a ''[[:category:Corporate|corporate]]'' environment. The markets were ''[[:category:Small size markets|small]]'' and ''[[:category:Medium size markets|medium]]'', ranging from 7 to 26 traders, and were open for ''[[:Category:Medium duration|medium duration]]'' (one week). The marketplace employed the ''[[:Category:Continuous Double Auction (CDA)|Continuous Double Auction (CDA)]]'' market model, and operated with ''[[:Category:Real-money|real-money]]''. The traders received ''[[:Category:Initial capital endowment|initial capital endowment]]'' and ''[[:Category:Initial securities endowment|initial securities endowment]]'', and the final dividends were calculated based on a ''[[:Category:Winner-takes-all securities|winner-takes-all securities]]'' model. ''[[:Category:Off-platform interaction|Off-platform interaction]]'' was possible through casual meetings at company's premises.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;The participants were ''[[:Category:Invited traders|invited]]'' from different parts of the business operation. These employees were involved in building the official company's forecasts and therefore had ''[[:Category:Stakeholders|stakes]]'' in the outcome of the markets. Even though the participants were exposed to all the relevant information which was available to the company, they possessed ''[[:Category:Incomplete information|incomplete information]]'' about the event. At the end of the experiment the traders received a ''[[:Category:Monetary reward|monetary reward]]'' according to their ''[[:Category:Performance incentive|performance]]''.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;== Discussion ==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;== Discussion ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Aggregate information]]&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Business topics]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Business topics]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Complete information]]&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Continuous Double Auction (CDA)]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Continuous Double Auction (CDA)]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Corporate]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Corporate]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Incomplete information]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Initial capital endowment]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Initial capital endowment]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Initial securities endowment]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Initial securities endowment]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Invited traders]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Invited traders]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Markets]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Medium duration]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Medium duration]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Medium size markets]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Monetary reward]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Monetary reward]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Off-platform interaction]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Off-platform interaction]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Performance incentive]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Performance incentive]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Predict]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Real-money]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Real-money]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Small size markets]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Small size markets]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Stakeholders]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Stakeholders]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Winner-takes-all securities]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Winner-takes-all securities]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
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			<pubDate>Wed, 12 May 2010 12:04:30 GMT</pubDate>			<dc:creator>Dorit.Geifman</dc:creator>			<comments>https://pm.haifa.ac.il/index.php?title=Talk:HP%27s_Information_Aggregation_Mechanism</comments>		</item>
		<item>
			<title>Dorit.Geifman:&amp;#32;Created page with '== Discussion ==  == References == Chen, K. Y., &amp; Plott, C. R. (2002). [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1.7437&amp;rep=rep1&amp;type=pdf Information aggregation …'</title>
			<link>https://pm.haifa.ac.il/index.php?title=HP%27s_Information_Aggregation_Mechanism&amp;diff=62&amp;oldid=prev</link>
			<description>&lt;p&gt;Created page with &amp;#39;== Discussion ==  == References == Chen, K. Y., &amp;amp; Plott, C. R. (2002). [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1.7437&amp;amp;rep=rep1&amp;amp;type=pdf Information aggregation …&amp;#39;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;== Discussion ==&lt;br /&gt;
&lt;br /&gt;
== References ==&lt;br /&gt;
Chen, K. Y., &amp;amp; Plott, C. R. (2002). [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1.7437&amp;amp;rep=rep1&amp;amp;type=pdf Information aggregation mechanisms: Concept, design and implementation for a sales forecasting problem]. ''Lee Center Workshop''&lt;br /&gt;
&lt;br /&gt;
== External links ==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Aggregate information]]&lt;br /&gt;
[[Category:Business topics]]&lt;br /&gt;
[[Category:Complete information]]&lt;br /&gt;
[[Category:Continuous Double Auction (CDA)]]&lt;br /&gt;
[[Category:Corporate]]&lt;br /&gt;
[[Category:Initial capital endowment]]&lt;br /&gt;
[[Category:Initial securities endowment]]&lt;br /&gt;
[[Category:Invited traders]]&lt;br /&gt;
[[Category:Medium duration]]&lt;br /&gt;
[[Category:Monetary reward]]&lt;br /&gt;
[[Category:Off-platform interaction]]&lt;br /&gt;
[[Category:Performance incentive]]&lt;br /&gt;
[[Category:Real-money]]&lt;br /&gt;
[[Category:Small size markets]]&lt;br /&gt;
[[Category:Stakeholders]]&lt;br /&gt;
[[Category:Winner-takes-all securities]]&lt;/div&gt;</description>
			<pubDate>Sun, 09 May 2010 12:53:31 GMT</pubDate>			<dc:creator>Dorit.Geifman</dc:creator>			<comments>https://pm.haifa.ac.il/index.php?title=Talk:HP%27s_Information_Aggregation_Mechanism</comments>		</item>
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