size 5 3.1 ! A discussion of this diagram can be found in: ! "Pattern Recognition and Machine Learning" by Christopher M. Bishop include "shape.gle" ! draw noise variance parameter amove 0.9 1 set color red fill red labeled_circle "$\sigma^2$" 0.05 langle 180 name "sigma" ! draw center plate begin box add 0.2 round 0.2 ! draw t_n node rmove 1.5 0 set fill thistle labeled_circle "$t_n$" 0.35 lradius 0.05 langle 240 name "tn" ! draw label "N" on plate gsave set just tl color black pmove 0.6 -45 tex "$N$" grestore ! draw x_n node rmove 0 1.5 set fill red labeled_circle "$x_n$" 0.05 langle 90 name "xn" set color purple end box ! draw omega node rmove 1.75 -1.5 set fill thistle color red labeled_circle "$w$" 0.35 langle 45 name "w" ! draw alpha node rmove 0 1.5 set fill red labeled_circle "$\alpha$" 0.05 langle 90 name "alpha" ! connect with arrows join sigma -> tn join w -> tn join alpha -> w join xn -> tn