218 reputation
17
bio website
location New Zealand
age 27
visits member for 3 years, 11 months
seen Dec 10 '13 at 10:03
Interested in machine learning techniques for motion control, especially the CMAC network.

Jul
2
awarded  Curious
Sep
12
awarded  Yearling
Jul
2
awarded  Tumbleweed
Mar
18
comment 'Squashing' a graph of data?
I tried this by taking the numerical derivative in MATLAB, scaling the derived vector by decreasing values over time, then integrating back with cumtrapz. The peaks do remain in the same place, however, an effect of this is that a constant offset has been introduced such that the data converges on a non-zero value, and I don't know why. Any ideas?
Mar
17
comment 'Squashing' a graph of data?
Thanks, this could work, i'll give it a go in the morning. Any hints on how to do this in code/MATLAB?
Mar
17
comment 'Squashing' a graph of data?
I have data from a control system. There is no function that directly generates this data. The graphic is just for illustration of what a divergent oscillation looks like. Thanks!
Mar
17
asked 'Squashing' a graph of data?
Jan
4
comment Sparse matrix inverse multiplied by sparse matrices
But is there no way to exploit the fact that it is being pre and post multiplied by the sparse matrix Y, to produce a sparse E?
Jan
4
asked Sparse matrix inverse multiplied by sparse matrices
Dec
11
accepted Matrix Decomposition
Nov
29
asked Matrix Decomposition
Jul
25
accepted Maximum-Minimums Identity Modification Help
Jul
25
revised Maximum-Minimums Identity Modification Help
edited tags
Jul
25
comment Maximum-Minimums Identity Modification Help
Just wasn't sure what other tag I could use, seemed to be the closest match I could think of. Any suggestions?
Jul
25
asked Maximum-Minimums Identity Modification Help
Jul
22
accepted Why does this Combinatorics Algorithm work?
Jul
22
comment Why does this Combinatorics Algorithm work?
Thanks for pointing me to the inclusion-exclusion principle, looks like I can explain it with that, as then my formula is equivalent to taking the union or maximum value per selected combinations containing 'a' per k layer.
Jul
22
asked Why does this Combinatorics Algorithm work?
Jul
11
accepted Combinations Help
Jul
9
comment Combinations Help
True, but my application actually goes a little deeper. Basically, to generate the data for say layer 3, index 0, I use the data already generated at indices 0,1&3 in layer 2. (Only a maximum of 3 indices will need to be selected, even for larger combinations).So to do this I created a big LUT which would map layer 3 index 0 to indices (0,1,3) in layer 2. So to recreate this LUT each time would be very slow.