Animations
The following are various animations complementing
the tutorial.
Little background
material is provided here, so you should have the tutorial
on hand if you really want to understand what is going on. All
animations are in MPEG format, and should be viewable with either
Mosaic or Netscape browsers.
Section 1.2: Downhill Simplex on P1
The panel on the left shows an top view of the 2D landscape
defining P1 (see also Fig. 2 in tutorial). The blue-to-white scale
codes elevation. Two initial simplex are shown; the green one
will converge to a secondaey extremum, while the purple
one will converge globally. The
(x,y) location and correponding function value
of the best node of the purple simplex are listed
in the bottom right corner. The panel on the upper right shows
convergence curves (1-f(x,y) versus generation) for
the two simplex. The vertical axis is logarithmic.
From the fourth move onward the animation does a closeup on
the central peak, otherwise the purple simplex is too small
to remain visible.
Click on above image to start animation (size: 0.33Mb)
Section 3.4: GA2 on P1
The panel on the left shows an top view of the 2D landscape
defining P1 (see also Fig. 2 in tutorial). The blue-to-white scale
codes elevation. Green dots are individuals in the population, and
the large yellow dot is the current best of the generation. Its
(x,y) location and correponding function value are listed
in the bottom right corner. The panel on the upper right shows
convergence curves (1-f(x,y) versus generation) for
the best individual (yellow) and median-ranked (green). The vertical
axis is logarithmic. The green line tracks the variation
of the mutation rate in the course of the run (also listed in
green below the panel).
Click on above image to start animation (size: 1.1Mb)
Solutions to most Exercises
The following links give you access to small(ish) postscript
documents that give solutions to all exercises. One document
covers all Exercises in one section.
Data for Exercise 4.1
The following link lets you access the radial velocity data for
the star rho Corona Borealis, needed for exercise 4.1. The first
column is the Julian date, the second the radial velocity in m/s,
the third the estimated error on the radial velocities, also in
m/s.
To retrieve the data
Click Here. (Save as Plain Text)
