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Company/University

The MathWorks

Personal Profile

I'm a Senior Usability Specialist here at MathWorks, supporting our internal teams--helping design the software that our own developers use. This means any coding I do is strictly amateur stuff, and my comments should NOT be considered the "voice of the MathWorks".

In a past life, I got a doctorate analyzing how people talk and work together via computers, and have worked on projects for various sponsors including ONR, NASA, AFOSR, and AFRL.

Professional Interests: Programming languages and environments; ethnographic analysis; statistics; visualization; NLP; audio processing; image processing

Professional Interests

Usability; ethnographic analysis; statistics; visualization; NLP; audio processing; image processing

1137Rank

6Badges

470Score

Alex Feinman submitted Solution 39697 to Problem 10. Determine whether a vector is monotonically increasing

on 15 Jan 2013

Alex Feinman submitted Problem 1132. Create a recurrence matrix for a vector of data to Community

on 21 Dec 2012

Alex Feinman submitted Solution 163257 to Problem 19. Swap the first and last columns

on 16 Nov 2012

Alex Feinman submitted a Comment to Solution 116396

You really want a larger test suite, but how would it work?

on 20 Jul 2012

Alex Feinman submitted Solution 116398 to Problem 189. Sum all integers from 1 to 2^n

on 20 Jul 2012

Alex Feinman submitted Solution 116396 to Problem 855. How many monitors are connected ?

on 20 Jul 2012

Alex Feinman submitted Solution 94164 to Problem 157. The Hitchhiker's Guide to MATLAB

on 31 May 2012

Alex Feinman submitted a Comment to Problem 651. Functional inputs

I'd like to include the test case listed below, but I'm stumped as to why it doesn't work:
%%
x1 = [ 1 2 3 ]
x2 = [ 10 20 ]
y_correct = [9 19; 8 18; 7 17]
y_actual = gridit(@minus, x1, x2);
assert(isequal(y_actual, y_correct));

on 2 May 2012

Alex Feinman submitted a Comment to Problem 594. "Look and say" sequence

Sorry about that. Cut and paste fail.

on 17 Apr 2012

Alex Feinman submitted Solution 39977 to Problem 158. Is my wife right? Now with even more wrong husband

on 13 Feb 2012

Alex Feinman submitted a Comment to Solution 39915

I can't believe I used a trick I learned from Javascript...

on 13 Feb 2012

Alex Feinman submitted Solution 39697 to Problem 10. Determine whether a vector is monotonically increasing

on 13 Feb 2012

Alex Feinman submitted Solution 35399 to Problem 3. Find the sum of all the numbers of the input vector

on 9 Feb 2012

Alex Feinman submitted a Comment to Problem 288. Construct a string from letters and counts

Now with improved tests, and reference solution (which I'm sure you can beat).

on 8 Feb 2012

Alex Feinman submitted Solution 34125 to Problem 30. Sort a list of complex numbers based on far they are from the origin.

on 8 Feb 2012

Alex Feinman submitted Problem 288. Construct a string from letters and counts to Community

on 8 Feb 2012

Alex Feinman received Creator badge for Problem 288. Construct a string from letters and counts

on 8 Feb 2012

Alex Feinman submitted Solution 831 to Problem 17. Find all elements less than 0 or greater than 10 and replace them with NaN

on 25 Jan 2012

Alex Feinman submitted Solution 815 to Problem 17. Find all elements less than 0 or greater than 10 and replace them with NaN

on 25 Jan 2012

Alex Feinman submitted a Comment to Solution 797

Persistent server error trying to evaluate this solution...

on 25 Jan 2012

Alex Feinman submitted a Comment to Problem 23. Finding Perfect Squares

Another of the classic "check if MATLAB has a function that does this already" problems...

on 25 Jan 2012