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fun chess idim = 
  let val dim = Real.fromInt idim
      fun rep3 v = (v,v,v)
      fun chess' (ii, ij) =
          let val (i,j) = (Real.fromInt ii,
                           Real.fromInt (idim-ij))
              val s = 3.0/(j+99.0)
          in (Real.round((i+dim)*s+j*s) mod 2 + 
              Real.round((dim*2.0-i)*s+j*s) mod 2)*127
          end

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; Hide certain messages from channel tracking
(setq erc-track-exclude-types '("JOIN" "NICK" "PART" "QUIT" "MODE"))

; Hide these messages from all buffers
(setq erc-hide-list '("JOIN" "PART" "QUIT"))

(defun set-empty-hide-list-eggsml ()
  (if (equal "#eggsml" (buffer-name))
      (set (make-local-variable 'erc-hide-list) '())))

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<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd">
  <channel>
<title>PGM videos</title>

<item><title>1.1.1-Intro-overview.mp4</title><link>http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.1-Intro-overview.mp4</link><enclosure type="video/mp4"  url="http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.1-Intro-overview.mp4" /></item>
<item><title>1.1.2-intro-distributions.mp4</title><link>http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.2-intro-distributions.mp4</link><enclosure type="video/mp4"  url="http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.2-intro-distributions.mp4" /></item>
<item><title>1.1.2-intro-distributions.mp4</title><link>http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.2-intro-distributions.mp4</link><enclosure t

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http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.1-Intro-overview.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.2-intro-distributions.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.3-intro-indep.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.4-intro-factors.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.1-Repn-BN-semantics.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.2-Repn-BN-patterns.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.3-Repn-BN-activetrails.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.4-Repn-BNs-dsep.mp4
http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.5-Repn-B

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• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.1-Intro-overview.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.2-intro-distributions.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.3-intro-indep.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/1.1.4-intro-factors.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.1-Repn-BN-semantics.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.2-Repn-BN-patterns.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.3-Repn-BN-activetrails.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphicalModels/videos/2.1.4-Repn-BNs-dsep.mp4
• http://openclassroom.stanford.edu/MainFolder/courses/ProbabilisticGraphica