Chernoff Faces | Clipmarks


	Chernoff Faces

kmcolo

5-1-2008 1:17 PM

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tags:

data, representation, graphics

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/672977e6-c799-469b-b5bc-d2cf24fdcb96/7F39887D-205F-48BC-8437-5DE51269B069/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm" href="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm" style="font-size: 11px;">kspark.kaist.ac.kr</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm"><table background="undefined" bgcolor=""><tr><TD width="20%" align="center"><APPLET width="100" height="100" code="ChernoffFaceApplet.class">
<PARAM value="#FFFFFF" name="backgroundcolor" />
<PARAM value="#0000ff" name="foregroundcolor" />
<PARAM value="0, 0, 0, 0, 0, 0, 0, 0, 0, 0" name="face" />
</APPLET>
 <BR />All 0. 
</TD></tr></table></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm">
In 1973, Herman Chernoff introduced a visualization technique to 
      illustrate trends in multidimensional data. His <EM>Chernoff Faces</EM> 
      were especially effective because they related the data to facial 
      features, something which we are used to differentiating between. 
      Different data dimensions were mapped to different facial features, for 
      example the face width, the level of the ears, the radius of the ears, the 
      length or curvature of the mouth, the length of the nose, etc.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm"><table background="undefined" bgcolor=""><tr><TD width="20%" align="center"><APPLET width="100" height="100" code="ChernoffFaceApplet.class">
<PARAM value="#FFFFFF" name="backgroundcolor" />
<PARAM value="#FF0000" name="foregroundcolor" />
<PARAM value="1, 1, 1, 1, 1, 1, 1, 1, 1, 1" name="face" />
</APPLET>
 <BR />All 1. 
  </TD></tr></table></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm">Here, the faces are described by 10 facial characteristic parameters: 1. head eccentricity, 2. eye eccentricity, 3. pupil size, 4. eyebrow slant, 5. nose size, 6. mouth shape, 7. eye spacing, 8. eye size, 9. mouth length, and 
10. degree of mouth opening. Each parameter is represented by a number between 0 and 1.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/kspark.kaist.ac.kr/img/97CEFDE5-B022-430B-A9B8-FD9F87D35B28" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm"><FONT color="gray">Herman Chernoff, "The use of faces to 
      represent points in k-dimensional space graphically," <I>J. 
      Am. Stat. Assoc.</I>, v68, 361-368 (1973).
</FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kspark.kaist.ac.kr/Human%20Engineering.files/Chernoff/Chernoff%20Faces.htm">The power of Chernoff face is its high condensation of data </blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/7F39887D-205F-48BC-8437-5DE51269B069/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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