Alife Digest Number 040

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Alife Digest

 · 10 months ago

 
ALIFE LIST: Artificial Life Research List Number 40 Tuesday, September 18th 1990 

  
             ARTIFICIAL LIFE RESEARCH ELECTRONIC MAILING LIST 
    Maintained by the Indiana University Artificial Life Research Group 
Contents: 
  
                      release announcement: GENESIS 1.1ucsd 
                                Agar is available 

  
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Date: Wed, 12 Sep 90 10:49:39 PDT 
From: schraudo%cs@ucsd.edu (Nici Schraudolph) 
Subject: release announcement: GENESIS 1.1ucsd 

I am pleased to announce the release of GENESIS 1.1ucsd, a heavily modified 
and enhanced version of the original genetic algorithm simulator by John J. 
Grefenstette.  New features (since 1.0ucsd) include: 

- support of subdirectory structure for I/O files 
- application-specific parameters to the evaluation function 
- sigma scaling (a more robust alternative to window scaling) 
- stochastic decoding for searching continuous spaces 
- super-uniform population initialization option 
- support of Dynamic Parameter Encoding - cf. recent TR announcement 

Other major differences to standard GENESIS include the ability to use 
suitable C functions directly as evaluation functions, and to distribute 
a set of simulations to remote hosts.  GENESIS 1.1ucsd can be obtained 
via anonymous ftp from the Artificial Life archive server as follows: 

% mkdir GAucsd 
% cd GAucsd 
% ftp iuvax.cs.indiana.edu	(129.79.254.192) 
Login: anonymous 
Password: <anything> 
ftp> cd pub/alife/software/unix/GAucsd 
ftp> binary 
ftp> get GENESIS.1.Z 
ftp> get GENESIS.2.Z 
ftp> get GENESIS.3.Z 
ftp> get GENESIS.4.Z 
ftp> quit 
% uncompress GENESIS.?.Z 
% chmod +x GENESIS.? 
% GENESIS.1 
% GENESIS.2 
% GENESIS.3 
% GENESIS.4 
% lpr UsersGuide 
% view README 

A tech report describing the main new feature, Dynamic Parameter Encoding, 
is available in pub/alife/papers/schrau90-dpe.ps.Z on the same ftp server. 

If you don't have ftp access, I can honor requests for an e-mail copy 
of the source code.  I maintain a mailing list for bug reports, updates, 
and other issues pertaining to this simulator - send me a message if 
you wish to be added to this list.  Please feel free to send me your 
comments, suggestions and experiences regards 1.1ucsd. 

I have compiled and tested the code on Sun3, Sun4, Vax, Mips and Pyramid 
architectures - if you are installing 1.1ucsd on another system I'd like 
to hear whether you had any compatibility problems. 

Best regards, 
-- 
Nicol N. Schraudolph, C-014 
University of California, San Diego 
La Jolla, CA 92093-0114 

 
------------------------------ 
  
Date: Mon, 17 Sep 90 22:42 EDT 
From: Michael Travers <mt@MEDIA-LAB.MEDIA.MIT.EDU> 
Subject: Agar is available 

I've finally been allowed to make my Agar software package available to 
the public.  Agar is an Animal Construction Kit that has been used to 
model the collective behavior of ants, among other things.  It was 
demoed at the Second Artificial Life Workshop. 

Agar is written in Lisp.  To use it, you must already have a Lisp 
environment.  So far, Agar has been ported to Macintosh Allegro Common 
Lisp 1.3 and Symbolics Genera 7.  You can obtain the files for both of 
these versions by anonymous FTP from host cecelia.media.mit.edu.  The 
files to get are: 

  pub/agar-sans-pcl.sit.hqx 
  pub/PCL.sit.hqx 

Send me email for more details. 

 
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End of ALife Digest 
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