[Push] PushGP Code Generation

[Patrik Kimmeswenger]

Hello,

my name is Patrik Kimmeswenger and I am studying Software Engineering at 
the University of Applied Sciences in Hagenberg 
<pen%20https://www.fh-ooe.at/en/hagenberg-campus/studiengaenge/master/software-engineering/>. 
Currently I am working on my master thesis with the title 
"Implementation and Ancestry Analysis of PushGP in HeuristicLab". 
Thereby I am advised by DI (FH) Miachel Kommenda MSc, a member of the 
HeuristicLab <http://dev.heuristiclab.com/> team.

My implementation of PushGP 3.0 written in C# is already able to parse 
and evaluate Push programs. At this point I want to thank you for the 
create language description. It is very detailed and easy to understand. 
However I have a question regarding Random Code Generation 
<http://faculty.hampshire.edu/lspector/push3-description.html#RandomCode>. 
I am not able to understand what is meant by the term "If this is an 
ephemeral random constant". I took a look at the Java implementation 
(Jsh) and noticed that a random number is used to determine which random 
generator should be used whereby a random generator for each data type 
(integer, float, boolean) exists and another one which is responsible 
for instructions. This seems to be a nice solution but I don't 
understand where an "ephemeral random constant" is used?

Sincerely,
Patrik Kimmeswenger



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