matrix

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What is the difference between a Confusion Matrix and Contingency Table?

I\'m writting a piece of code to evaluate my Clustering Algorithm and I find that every kind of evaluatio开发者_运维问答n method needs the basic data from a m*n matrix like A = {aij} where aij is the[详细]

2023-04-10 08:04 分类：问答
Change Screen Origin Of PrintEventArgs.Graphics in C#

I been messing around with drawing 3D Objects in C# using PaintEventArgs.Graphics and the following code[详细]

2023-04-10 01:42 分类：问答
Expression for summing all the entries of a logical matrices expressions in Matlab?

To sum all the elements in a 开发者_开发问答matrix you usually do A = sum ( B(:) ); which is nice and short. However assume that we have a logical expression like this[详细]

2023-04-09 21:16 分类：问答
COLLADA: Inverse bind pose in the wrong space?

I\'m working on writing my own COLLADA importer. I\'ve gotten pretty far, loading meshes and materials and such. But I\'ve hit a snag on animation, specifically: joint rotations.[详细]

2023-04-09 12:05 分类：问答
How to get the fatest way of getting the maximum values element-wised of "n" matrices in Python/Numpy?

I had like to know the best 开发者_JS百科fatest/optimized way of getting the maximum values element-wised of "n" matrices in Python/Numpy.[详细]

2023-04-09 09:52 分类：问答
Get rank of matrix entries?

Assume a matrix: > a <- matrix(c(100, 90, 80, 20), 2, 2) > a [,1] [,2] [1,]10080 开发者_如何学JAVA[2,]9020[详细]

2023-04-09 07:48 分类：问答
Clip matrix for 3D Perspective Projection

I am trying to create a simple 3D graphic开发者_运维问答s engine and have found and used the equations I found here: http://en.wikipedia.org/wiki/3D_projection#cite_note-0. (I have calculations for Dx[详细]

2023-04-09 05:03 分类：问答
Minimisation problem in Python, fmin_bfgs won't work but fmin will, 'Matrices not aligned'

I have a function in python which takes a vector and returns a real number.I am using the scipy.optimize fmin and fmin_bfgs functions to find the argument which gives the function its approx minimum v[详细]

2023-04-08 20:47 分类：问答
Android: How can I resize an image to be automatically fitted with the View

I have png floor map images. I am using the below code to set the default image size to fit with the view.[详细]

2023-04-08 09:51 分类：问答
Xna ModelBones - How to move them away from eachother?

Hello I know th开发者_StackOverflow中文版at one can get absolute transforms of bones in a model.. But how to move them away (like inflating) ? I think to do so, I need to move them forward to their lo[详细]

2023-04-07 21:09 分类：问答