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In the previous experiments the
12Sin^{2}(X) identity was found as well as a close approximation to the
,
which was achieved by successive application of the Sin function to 1.0. This results in a constantly decreasing value that closely approximated ,
which shows that GE is effectively evolving a numerical constant.
On using the Steady State selection an improvement in performance was again achieved, increasing from 4% of runs being successful within 50 generations to 87% with the Steady State selection, see Figure 3.
Figure 3:
Finding Trigonometric Identities cumulative frequency measure.

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