<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments on: Signaling Math</title>
	<atom:link href="http://www.overcomingbias.com/2009/02/signaling-math.html/feed" rel="self" type="application/rss+xml" />
	<link>http://www.overcomingbias.com/2009/02/signaling-math.html</link>
	<description>Overcoming Bias is economist Robin Hanson’s blog, on honesty, signaling, disagreement, forecasting, and the far future.</description>
	<lastBuildDate>Sat, 11 Feb 2012 23:03:19 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.1.3</generator>
	<item>
		<title>By: Overcoming Bias : Against Propaganda</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-429718</link>
		<dc:creator>Overcoming Bias : Against Propaganda</dc:creator>
		<pubDate>Mon, 06 Jul 2009 07:32:46 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-429718</guid>
		<description>[...] 12Feb: This post gives a concrete math model of low emotion as signaling [...]</description>
		<content:encoded><![CDATA[<p>[...] 12Feb: This post gives a concrete math model of low emotion as signaling [...]</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Overcoming Bias : Signals Are Forever</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-429258</link>
		<dc:creator>Overcoming Bias : Signals Are Forever</dc:creator>
		<pubDate>Tue, 23 Jun 2009 10:00:34 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-429258</guid>
		<description>[...] the signal needed to reassure her is also very small.  But in the simplest standard signaling models, the amount that each type must signal is independent of the distribution of types; it only depends [...]</description>
		<content:encoded><![CDATA[<p>[...] the signal needed to reassure her is also very small.  But in the simplest standard signaling models, the amount that each type must signal is independent of the distribution of types; it only depends [...]</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Cyan</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387297</link>
		<dc:creator>Cyan</dc:creator>
		<pubDate>Tue, 17 Feb 2009 14:57:59 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387297</guid>
		<description>The point isn&#039;t so much to tell &lt;i&gt;me&lt;/i&gt; the answers -- it&#039;s that until &lt;i&gt;someone&lt;/i&gt; does the study, the model is an hypothesis, and gives no particular support to the reality of any conclusions one might want to draw from it.
</description>
		<content:encoded><![CDATA[<p>The point isn&#8217;t so much to tell <i>me</i> the answers &#8212; it&#8217;s that until <i>someone</i> does the study, the model is an hypothesis, and gives no particular support to the reality of any conclusions one might want to draw from it.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Robin Hanson</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387296</link>
		<dc:creator>Robin Hanson</dc:creator>
		<pubDate>Tue, 17 Feb 2009 12:58:56 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387296</guid>
		<description>Wei, it seems to me that you are just saying that your intuition disagrees with my model.  Duly noted, but not exactly a stinging criticism.

Cyan, this wouldn&#039;t be much harder to test that most social science signaling hypotheses.  But since you don&#039;t seem to know much social science, I don&#039;t see the point in outlining to you how I&#039;d go about that if I had the funding and time to do so.

I continue to get this sort of flak when I post on social science; most commenters here seem to consider friendly AI theory more well established than social science.
</description>
		<content:encoded><![CDATA[<p>Wei, it seems to me that you are just saying that your intuition disagrees with my model.  Duly noted, but not exactly a stinging criticism.</p>
<p>Cyan, this wouldn&#8217;t be much harder to test that most social science signaling hypotheses.  But since you don&#8217;t seem to know much social science, I don&#8217;t see the point in outlining to you how I&#8217;d go about that if I had the funding and time to do so.</p>
<p>I continue to get this sort of flak when I post on social science; most commenters here seem to consider friendly AI theory more well established than social science.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Cyan</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387295</link>
		<dc:creator>Cyan</dc:creator>
		<pubDate>Tue, 17 Feb 2009 03:29:18 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387295</guid>
		<description>Robin, my questions aren&#039;t rhetorical -- if your model has the value you seem to ascribe to it, then there should be good answers for each one. (E.g., PCA can be a sound way of arguing that massively multidimensional quantities can be summarized by a small set of scalars.) I&#039;d be happy to have my queries answered because it would mean I could place some trust in your model to help me understand the world. As it stands, I can&#039;t.

&lt;blockquote&gt;...&lt;i&gt;every&lt;/i&gt; model is &quot;oversimplified&quot; in the sense of neglecting relevant details.&lt;/blockquote&gt;

The question is whether it&#039;s &lt;i&gt;too&lt;/i&gt; simplified to be of any practical use.

&lt;blockquote&gt;I don&#039;t know how I gave you the impression that I have &quot;blind reliance&quot; on my model as an &quot;accurate representation.&quot;&lt;/blockquote&gt;

You feel it&#039;s accurate enough to support the point you&#039;re making in the penultimate paragraph. I&#039;m not so sure.
</description>
		<content:encoded><![CDATA[<p>Robin, my questions aren&#8217;t rhetorical &#8212; if your model has the value you seem to ascribe to it, then there should be good answers for each one. (E.g., PCA can be a sound way of arguing that massively multidimensional quantities can be summarized by a small set of scalars.) I&#8217;d be happy to have my queries answered because it would mean I could place some trust in your model to help me understand the world. As it stands, I can&#8217;t.</p>
<blockquote><p>&#8230;<i>every</i> model is &#8220;oversimplified&#8221; in the sense of neglecting relevant details.</p></blockquote>
<p>The question is whether it&#8217;s <i>too</i> simplified to be of any practical use.</p>
<blockquote><p>I don&#8217;t know how I gave you the impression that I have &#8220;blind reliance&#8221; on my model as an &#8220;accurate representation.&#8221;</p></blockquote>
<p>You feel it&#8217;s accurate enough to support the point you&#8217;re making in the penultimate paragraph. I&#8217;m not so sure.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Wei Dai</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387294</link>
		<dc:creator>Wei Dai</dc:creator>
		<pubDate>Tue, 17 Feb 2009 02:00:10 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387294</guid>
		<description>Robin, your model has to compete with other tools that the reader has for understanding the world, including his or her own highly evolved native social intelligence. By &quot;oversimplified&quot; I meant that the initial model lacks enough relevant details that it seemed unlikely to perform well in practice relative to those other tools. If you were presenting the model as a starting point for further research or as a pedagogical tool, that would be one thing, but you were apparently applying it to a real world situation, and giving people (Eliezer) advice based on it.

As for economics modeling in general, I am more skeptical of it than I used to be. It&#039;s a lot of fun to do in the armchair, but can be pretty dangerous in the real world, where it&#039;s easy to miss a relevant detail with serious consequences, or have one&#039;s model misapplied by others in inappropriate settings. Generic disclaimer of course don&#039;t do much good (although given human nature I think they&#039;re still better than nothing). More useful would be specific disclaimers about what the model assumes, guidelines on when it is likely or not likely to give sensible results, and rationales behind any technical modeling choices such as the specific form of utility function and whether variables are continuous or discrete (e.g. whether there is reason to believe that the model is insensitive to these choices).

</description>
		<content:encoded><![CDATA[<p>Robin, your model has to compete with other tools that the reader has for understanding the world, including his or her own highly evolved native social intelligence. By &#8220;oversimplified&#8221; I meant that the initial model lacks enough relevant details that it seemed unlikely to perform well in practice relative to those other tools. If you were presenting the model as a starting point for further research or as a pedagogical tool, that would be one thing, but you were apparently applying it to a real world situation, and giving people (Eliezer) advice based on it.</p>
<p>As for economics modeling in general, I am more skeptical of it than I used to be. It&#8217;s a lot of fun to do in the armchair, but can be pretty dangerous in the real world, where it&#8217;s easy to miss a relevant detail with serious consequences, or have one&#8217;s model misapplied by others in inappropriate settings. Generic disclaimer of course don&#8217;t do much good (although given human nature I think they&#8217;re still better than nothing). More useful would be specific disclaimers about what the model assumes, guidelines on when it is likely or not likely to give sensible results, and rationales behind any technical modeling choices such as the specific form of utility function and whether variables are continuous or discrete (e.g. whether there is reason to believe that the model is insensitive to these choices).</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Robin Hanson</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387293</link>
		<dc:creator>Robin Hanson</dc:creator>
		<pubDate>Mon, 16 Feb 2009 23:26:54 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387293</guid>
		<description>Cyan and Wei, your complaints seem to be against the very idea of economics modeling; &lt;i&gt;every&lt;/i&gt; model is &quot;oversimplified&quot; in the sense of neglecting relevant details.  I don&#039;t know how I gave you the impression that I have &quot;blind reliance&quot; on my model as an &quot;accurate representation.&quot;  Perhaps you wanted a generic disclaimer, of the sort that could go on any model, that it may not exactly correspond to reality?
</description>
		<content:encoded><![CDATA[<p>Cyan and Wei, your complaints seem to be against the very idea of economics modeling; <i>every</i> model is &#8220;oversimplified&#8221; in the sense of neglecting relevant details.  I don&#8217;t know how I gave you the impression that I have &#8220;blind reliance&#8221; on my model as an &#8220;accurate representation.&#8221;  Perhaps you wanted a generic disclaimer, of the sort that could go on any model, that it may not exactly correspond to reality?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Wei Dai</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387292</link>
		<dc:creator>Wei Dai</dc:creator>
		<pubDate>Mon, 16 Feb 2009 23:18:41 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387292</guid>
		<description>Hal wrote: &lt;i&gt;And just as readers complain about the dryness of technical writing, so readers will complain about excessive use of equations.&lt;/i&gt;

I think people are complaining that there is too little, not too much, math. Robin&#039;s post gave the impression of blind reliance on an oversimplified model, which people are understandably wary of, given the recent news stories about how oversimplified risk modeling was a major cause of the current economic crisis.

Robin wrote: &lt;i&gt;Wei, I did not mean a zero chance of large noise.&lt;/i&gt;

Robin, in that case I&#039;m not sure what you mean. You can clear this up by giving us the model you have in mind, with noise and repetition, and its equilibrium solutions.
</description>
		<content:encoded><![CDATA[<p>Hal wrote: <i>And just as readers complain about the dryness of technical writing, so readers will complain about excessive use of equations.</i></p>
<p>I think people are complaining that there is too little, not too much, math. Robin&#8217;s post gave the impression of blind reliance on an oversimplified model, which people are understandably wary of, given the recent news stories about how oversimplified risk modeling was a major cause of the current economic crisis.</p>
<p>Robin wrote: <i>Wei, I did not mean a zero chance of large noise.</i></p>
<p>Robin, in that case I&#8217;m not sure what you mean. You can clear this up by giving us the model you have in mind, with noise and repetition, and its equilibrium solutions.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Cyan</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387291</link>
		<dc:creator>Cyan</dc:creator>
		<pubDate>Mon, 16 Feb 2009 05:48:41 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387291</guid>
		<description>&lt;blockquote&gt;But the complaints are not yet articulate enough to determine their source.&lt;/blockquote&gt;

Can this math-esque model be tested experimentally? How could one measure &lt;i&gt;e&lt;/i&gt; or &lt;i&gt;p&lt;/i&gt; in the wild? How can reducing inherently massively multidimensional quantities to two scalars be justified? Is there any reason to expect that such a reduction would yield an accurate description of what goes on in human brains to even first order?

I&#039;m not quite as skeptical as Brian Macker, but I can&#039;t uncritically adopt this math as an accurate representation for what actually goes on in the real world. Suggestive, sure -- conclusive, no. (Grant thinks it&#039;s not intended to be realistic, but I don&#039;t see anything in the post that would prompt that inference.)
</description>
		<content:encoded><![CDATA[<blockquote><p>But the complaints are not yet articulate enough to determine their source.</p></blockquote>
<p>Can this math-esque model be tested experimentally? How could one measure <i>e</i> or <i>p</i> in the wild? How can reducing inherently massively multidimensional quantities to two scalars be justified? Is there any reason to expect that such a reduction would yield an accurate description of what goes on in human brains to even first order?</p>
<p>I&#8217;m not quite as skeptical as Brian Macker, but I can&#8217;t uncritically adopt this math as an accurate representation for what actually goes on in the real world. Suggestive, sure &#8212; conclusive, no. (Grant thinks it&#8217;s not intended to be realistic, but I don&#8217;t see anything in the post that would prompt that inference.)</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Robin Hanson</title>
		<link>http://www.overcomingbias.com/2009/02/signaling-math.html#comment-387290</link>
		<dc:creator>Robin Hanson</dc:creator>
		<pubDate>Mon, 16 Feb 2009 03:06:45 +0000</pubDate>
		<guid isPermaLink="false">http://prod.ob.trike.com.au/2009/02/signaling-math.html#comment-387290</guid>
		<description>Hal, yes, one must use math excessively to credibly signal competence and rigor.  But the complaints are not yet articulate enough to determine their source.  It is not clear to me whether my point could have been made effectively with less math, and since it seemed I should give a fuller explanation if signaling at some point, this seemed a good opportunity.
</description>
		<content:encoded><![CDATA[<p>Hal, yes, one must use math excessively to credibly signal competence and rigor.  But the complaints are not yet articulate enough to determine their source.  It is not clear to me whether my point could have been made effectively with less math, and since it seemed I should give a fuller explanation if signaling at some point, this seemed a good opportunity.</p>
]]></content:encoded>
	</item>
</channel>
</rss>

<!-- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/

Page Caching using disk (enhanced)
Database Caching using disk
Object Caching 438/455 objects using disk
Content Delivery Network via Amazon Web Services: S3: overcomingbias-assets.s3.amazonaws.com

Served from: www.overcomingbias.com @ 2012-02-11 18:18:31 -->
