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May
2
comment Second derivative of SmoothKernelDistribution PDF?
You might try KernelMixtureDistribution to avoid the piecewise linear limitation
Apr
20
answered Is this behavior of DistributionFitTest together with StableDistribution a bug?
Apr
19
comment Why do EstimatedDistribution and DistributionFitTest work this way
I recommend reading the following en.m.wikipedia.org/wiki/Lilliefors_test
Apr
19
comment Why do EstimatedDistribution and DistributionFitTest work this way
In one case the parameters are estimated internally. The null distribution for the tests assume the parameters are known apriori and so a correction to the p-value must be applied to account for the estimation. If you provide a fitted distribution the test assumes known parameters and makes no correction.
Mar
16
comment Generate a sample from a multivariate Cauchy distribution
Why not use MultivariateTDistribution with v = 1?
Feb
26
awarded  Notable Question
Feb
24
comment Creating Identification/Classification trees
mathematica.stackexchange.com/questions/19285/… may help
Feb
5
comment Is there a convenient way to sum TimeSeries objects in Mathematica?
You can also set the missing data method on the TimeSeries objects to None. Not sure if that will work, I don't have M in front of me to try it.
Feb
4
comment Is there a convenient way to sum TimeSeries objects in Mathematica?
TimeSeriesThread is what you want I think
Jan
17
awarded  Yearling
Jan
17
comment What is the purpose of Internal`LocalizedBlock?
@Mr.Wizard just a little tidbit, if I recall correctly this was added for the purpose of fitted models being able to work with subscripted variables so I think Dan is right on here.
Jan
16
comment Why does TimeSeriesShift is just adding a fixed number of days?
That's probably why TimeSeriesShift does what it does. Both TimeSeries and TemporalData require unique time stamps. Also many algorithms are particular About uniform vs irregular spacing which is only preserved by a uniform shift.
Jan
15
comment Why does TimeSeriesShift is just adding a fixed number of days?
What should it do for January 29th?
Jan
14
comment Periodogram for irregularly spaced data
@Verbeia you should definitely file a suggestion with WRI for Periodogram to take TemporalData (and TimeSeries). This was on my todo list before I left I just didn't get to it.
Jan
9
comment Why is my data 10 times slower than random data when doing matrix multiplication
Computing the following Tally[ByteCount /@ Flatten[tb]] shows that some of your numbers have different byte counts due to large exponents. I doubt the data can be packed.
Jan
4
awarded  Enlightened
Jan
4
awarded  Nice Answer
Jan
4
revised Rapid density estimation and rendering of decision regions
deleted 1 character in body
Jan
4
comment Rapid density estimation and rendering of decision regions
I'm glad to help.
Jan
4
answered Rapid density estimation and rendering of decision regions