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Relationship between SciPy and NumPy

...numpy as _num from numpy import oldnumeric from numpy import * from numpy.random import rand, randn from numpy.fft import fft, ifft from numpy.lib.scimath import * The log10 function you get in scipy comes from numpy.lib.scimath. Looking at that code, it says: """ Wrapper functions to more user-f...
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Java Delegates?

...same effect by using reflection to get Method objects you can then invoke, and the other way is to create an interface with a single 'invoke' or 'execute' method, and then instantiate them to call the method your interested in (i.e. using an anonymous inner class). You might also find this article ...
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Finding quaternion representing the rotation from one vector to another

I have two vectors u and v. Is there a way of finding a quaternion representing the rotation from u to v? 7 Answers ...
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What is an intuitive explanation of the Expectation Maximization technique? [closed]

... here. Suppose we have some data sampled from two different groups, red and blue: Here, we can see which data point belongs to the red or blue group. This makes it easy to find the parameters that characterise each group. For example, the mean of the red group is around 3, the mean of the blue...
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How to avoid “if” chains?

... You can use an && (logic AND): if (executeStepA() && executeStepB() && executeStepC()){ ... } executeThisFunctionInAnyCase(); this will satisfy both of your requirements: executeStep<X>() should evaluate only if the pre...
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What can you use Python generator functions for?

I'm starting to learn Python and I've come across generator functions, those that have a yield statement in them. I want to know what types of problems that these functions are really good at solving. ...
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What is the difference between float and double?

I've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the d...
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Why are there two kinds of functions in Elixir?

I'm learning Elixir and wonder why it has two types of function definitions: 8 Answers ...
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What is a software framework? [closed]

...o the measuring 1000 times; obviously, you would make a frame of 5m by 5m, and then with the help of it you would be able to cut 1000 pieces of paper in less time. So, what you did was make a framework which would do a specific type of task. Instead of performing the same type of task again and agai...
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What is the difference between Cygwin and MinGW?

I want to make my C++ project cross platform, and I'm considering using Cygwin/MinGW. But what is the difference between them ? ...