Hi Muhammad,
This is an excellent question and something I've been meaning to try to
answer in the Ptolemy II faq.
I just added something to the Ptolemy II faq about this:
http://ptolemy.eecs.berkeley.edu/ptolemyII/ptIIfaq.htm#parameterSweeps
says:
*4.11 How do a do a parameter sweep?*
A Parameter Sweep is when a model is run a number of times with
different parameters to perhaps find an optimal solution. For
details, see
http://chess.eecs.berkeley.edu/ptexternal/wiki/Main/ParameterSweeps
<http://chess.eecs.berkeley.edu/ptexternal/wiki/Main/ParameterSweeps#in_browser>.
http://chess.eecs.berkeley.edu/ptexternal/wiki/Main/ParameterSweeps
says:
Parameter Sweeps
A Parameter Sweep is when a model is run a number of times with
different parameters to perhaps find an optimal solution.
These two articles in Wikipedia might be of interest.
* Design of Experiments (DoE)
<https://en.wikipedia.org/wiki/Design_of_experiments> (Wikipedia)
* Monte Carlo Simulation
<https://en.wikipedia.org/wiki/Monte_carlo_simulation> (Wikipedia)
One way to do optimization in Ptolemy II would be to do a parameter
sweep on a model by using the higher order component (HOC) actors such
as ModelReference.
See the ModelReference actor:
* Docs:
http://sisyphus.eecs.berkeley.edu:8079/hudson/job/ptII/javadoc/ptolemy/actor/lib/hoc/ModelReference.html
* Demo: ptolemy/actor/lib/hoc/demo/ModelReference/ModelReference.xml
and RunCompositeActor
*
http://sisyphus.eecs.berkeley.edu:8079/hudson/job/ptII/javadoc/ptolemy/actor/lib/hoc/RunCompositeActor.html
Tests:
* ptII/ptolemy/actor/lib/hoc/test/auto/DEInPNInRunCompositeActor.xml
* ptII/ptolemy/actor/lib/hoc/test/auto/RunCompositeActor.xml
* ptII/ptolemy/actor/lib/hoc/test/auto/RunCompositeActor2.xml
* ptII/ptolemy/actor/lib/hoc/test/auto/RunCompositeActor3.xml
* ptII/ptolemy/actor/lib/hoc/test/auto/RunCompositeActor4.xml
It is also possible to use a state machine:
* $PTII/ptolemy/domains/modal/demo/MultipleRuns/MultipleRuns.xml
Another way is to invoke the model multiple times from the command
line and pass in different command line arguments. Properly escaping a
string can be tricky.
* See
http://ptolemy.eecs.berkeley.edu/ptolemyII/ptIIfaq.htm#invoking%20Ptolemy%20II?
Ptolemy/Kepler papers that cover Parameter Sweeps
* Jianwu Wang, "Distributed Execution Architectures in Ptolemy II
<http://chess.eecs.berkeley.edu/pubs/806/>," 9th Biennial Ptolemy
Miniconference, February 16, 2011
* Jianwu Wang, Altintas, I., Hosseini, P.R., Barseghian, D., Crawl,
D., Berkley, C., Jones, M.B., "Accelerating Parameter Sweep
Workflows by Utilizing Ad-hoc Network Computing Resources: an
Ecological Example
<http://users.sdsc.edu/%7Ejianwu/JianwuWang_files/Accelerating%20Parameter%20Sweep%20Workflows%20by%20Utilizing%20Ad-hoc%20Network%20Computing%20Resources%20-%20an%20Ecological%20Example%20%28SWF%202009%29.pdf>,"
Services - I, 2009 World Conference on, 6-10 July 2009. DOI
<http://dx.doi.org/10.1109/SERVICES-I.2009.9>
* David Abramson, Blair Bethwaite, Colin Enticott, Slavisa Garic,
Tom Peachey, "Parameter Space Exploration Using Scientific
Workflows
<http://link.springer.com/chapter/10.1007%2F978-3-642-01970-8_11>,"
Computational
Science -- ICCS 2009, Lecture Notes in Computer Science Volume
5544, 2009, pp 104-113.
Ptolemy/Kepler Mailing List mentions of Parameter Sweeps
* Monte Carlo Simulation In BCVTB
<https://groups.google.com/forum/#%21msg/bcvtb/O0yofsqczOs/lNK1skgh5iQJ>
October, 2012.
* Re: [kepler-users] System Dynamics Actor?
<https://lists.eecs.berkeley.edu/sympa/arc/ptolemy-hackers/2008-01/msg00007.html>
Jan. 2008.
On 9/18/13 6:14 AM, Muhammad Usama wrote:
Is there any way I can automate workflows? e.g. set the range of
results which are required and then the workflow executes in loop and
on each iterations some parameters are adjusted until the results meet
the defined criteria?
Is there anyway I can do that in kepler? or is there any other system
where I can do that?
--
Muhammad Usama
2011-NUST-MS-CS-009
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--
Christopher Brooks, PMP University of California
Academic Program Manager & Software Engineer US Mail: 337 Cory Hall
CHESS/iCyPhy/Ptolemy/TerraSwarm Berkeley, CA 94720-1774
c...@eecs.berkeley.edu, 707.332.0670 (Office: 545Q Cory)
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