Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Also, don't forget the variant on that that is evolutionary programming. An evolutionary algorithm takes a result, usually a string, and manipulates it so that it gets progressively better over time based on some scoring system.

Evolutionary programming does a similar thing, but with the program code itself.
An example of this is in the game GridWars, the team that came in second used a program that was all evolutionarily built. Interestingly enough, in that particular competition, speed matters very much, and that is one drawback of evolutionary programming - it tends to make bulky code that isn't always as fast as it could be.

I haven't yet tried it myself with eval, but I suspect it would be relatively easy to implement in Perl.

The idea is that you have your desired result, and instead of manipulating your string as the desired output - you manipulate the code that generates your output. Usually this means adding if/then statements and adjusting the values that they compare, and perhaps nesting them as well.
I haven't ever written in Lisp, but I have read that it is relatively easy to implement in Lisp.

This is a good way to let a program design a program for you. Then later on it usually benefits the speed of the program for a human to go over the final result and look for areas that it could be changed to optimize various parts of it.


-------------------------------------------------------------------
There are some odd things afoot now, in the Villa Straylight.

In reply to Re: A Beginning Guide To Evolutionary Algorithms by AssFace
in thread A Beginning Guide To Evolutionary Algorithms by blokhead

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (7)
As of 2021-05-14 13:58 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Perl 7 will be out ...





    Results (150 votes). Check out past polls.

    Notices?