[IPython-dev] Widget idea: Global Parameters

[John Griffiths]

theres a tool called lancet that does stuff similar to sumatra and has been
specifically developed with notebooks in mind

http://www.ncbi.nlm.nih.gov/pubmed/24416014
On 6 Apr 2014 16:06, "Maximilian Albert" <maximilian.albert at gmail.com>
wrote:

> Hi all,
>
> somewhat complementary, but it might be useful to combine some of the
> ideas mentioned here with tools like Sumatra [1], which might be
> useful for further automization and/or reproducibility. I haven't
> thought about this deeply, but offhand I could imagine that it would
> help with some of the caching issues mentioned (because the outcome of
> different simulation/analysis runs is stored in a database, so it
> would be easy to get the data or plots corresponding to a specific
> parameter set).
>
> Cheers,
> Max
>
> P.S.: If anyone knows of tools similar to Sumatra, I'd be interested
> to hear about them (although it may be better to devote a separate
> thread to this).
>
> [1] http://pythonhosted.org/Sumatra/
>
> 2014-04-05 20:58 GMT-04:00 Fernando Perez <fperez.net at gmail.com>:
> > On Fri, Apr 4, 2014 at 9:01 AM, Jacob Biesinger <
> jake.biesinger at gmail.com>
> > wrote:
> >>
> >> What if we had a way to specify "report parameters", global variables
> you
> >> can modify using a widget interface (dropdown, slider, input box, etc
> but
> >> tied to multiple cells or possibly the whole notebook) and a caching
> >> mechanism to store notebook contents for each combination of report
> >> parameters? I'm imagining quickly switching the dataset for a series of
> >> graphs I'm looking at and having the graphs already cached for the ones
> I've
> >> looked at, or having the report run for any new combinations.
> >
> >
> > Paul Ivanov might chime in soon, he and I discussed this a while back
> and I
> > think he might even have some prototype code that could be a useful
> starting
> > point.
> >
> > This is both a really important problem, and one that I think a lot of
> > progress can be made on before we need to think about changes in IPython
> > itself.
> >
> > The direction Paul and I were considering was to annotate a cell with
> > metadata indicating that it contains parameters, and then have something
> > like runipy create new copies of the notebook varying each parameter over
> > the specified range.  I actually think it's better, for now, to
> explicitly
> > create copies of all notebooks, so it's a little easier to simply open
> one
> > and look at it. I would have the tool simply dump the 'children'
> notebooks
> > with names that make them all easy to later remove/clean up. But that
> makes
> > it possible to simply open any one of them and inspect it, re-execute it
> > manually with further tweaks, etc.
> >
> > And, it's the simplest thing that can possibly work, before thinking too
> > hard about building new GUIs or anything else. All you need is:
> >
> > - a note in the cell metadata.
> > - some markup syntax to specify in the cell the parameter ranges you
> want.
> > - a wrapper script that uses something like runipy and loops over the
> lot.
> >
> > That's what I'd do *first*, until I understood the use cases and problems
> > better...  And the nice thing is that you can do all that today, without
> > needing anything new whatsoever from upstream or having to mess with the
> > code in IPython itself.
> >
> > Cheers,
> >
> > f
> >
> >
> > --
> > Fernando Perez (@fperez_org; http://fperez.org)
> > fperez.net-at-gmail: mailing lists only (I ignore this when swamped!)
> > fernando.perez-at-berkeley: contact me here for any direct mail
> >
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> >
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