1,631 reputation
619
bio website linkedin.com/pub/eric-brown/…
location Skokie, Illinois
age
visits member for 2 years
seen 2 days ago

Jul
13
accepted Dataset with no members
Jul
12
comment Why does FindFit seem to have trouble fitting exponential data?
@RahulNarain I believe that FindFit minimizes, e.g. the least squares error, whereas NonlinearModelFit maximizes the value of the parameter values with respect to a likelihood function.
Jul
12
revised Dataset with no members
deleted 3 characters in body
Jul
11
asked Dataset with no members
Jul
2
awarded  Curious
Dec
15
awarded  Popular Question
Dec
2
accepted Is Mathematica an Implementation of the Wolfram Language?
Nov
27
awarded  Good Question
Nov
22
comment Is Mathematica an Implementation of the Wolfram Language?
@halirutan now i get it. :-)
Nov
21
awarded  Nice Question
Nov
21
asked Is Mathematica an Implementation of the Wolfram Language?
Sep
29
awarded  Yearling
Aug
30
comment How to send a function definition to MathLink from C/C++?
@Szabolcs I haven't been able to figure out how to round trip from C (I will keep trying.) Agreed, it will be a big performance hit over C or Fortran RNG, but if the RNG for exotic (or novel) distributions is not available, then Mathematica should be acceptable for an ad hoc RNG for development purposes. (Of course you know this, just letting you know that I know :-)
Aug
26
comment How to send a function definition to MathLink from C/C++?
@Szabolcs one reason to call Mathematica from C is if the C code already exists (and is kind of complicated to build/refactor). I have a case now where I wish I could shoe horn in Mathematica's random number generators into the C program, and I would be off to the races.
Aug
26
comment Write C/C++ programs calling Mathematica functions
If you could point me to the specific page that demonstrates the "round trip" in C that you have shown in Java, then I would be happy to eat crow. What I see on the Mathlink documentation is very high-level.
Aug
26
comment Write C/C++ programs calling Mathematica functions
I regret that I have to downvote this. The question asks about C/C++, but the solution is in Java! The link provided goes to the top level of MathLink, but the whole point of the question is that MathLink docs generally cover Mathematica -> C rather than the other way around. (I have a similar problem now, which brought me to this question.)
Jul
27
awarded  Good Question
Jul
17
comment How to save a web page in mathematica?
@Stefan For example, I could Import[ coolMMAStackExchangeURL, "WebArchive"] into a section, and then I could do some of my own calculations in a new section below. (It would be just like a Wolfram Alpha query). I could save the whole file in one convenient notebook. Could I just embed a hyperlink to the web page? Yes. But one could not guarantee the web page would always be there. (I like webarchives on Macintosh.) Also, the content would be available to me offline. How often am I offline? Seldom, but wireless is often spotty. Anyway, many people even want emacs to have an html renderer...
Jul
17
comment How to save a web page in mathematica?
I think it would be super-sweet if I could Import[ webpage ] and it would render the whole web page in an output cell of Mathematica.
Jul
12
comment How to fit 3 data sets to a model of 4 differential equations?
Also, is pfun even a function? Should it be pfun[{k1_,k2_…,k10_}]:= *definition* or something? I'm afraid I have to agree with the other comments that your task is almost impossible with the paucity of data and the number of parameters. (This would probably never survive a sensitivity analysis) But, I am interested in the general problem of fitting differential equation parameters to data sets...