Not what you're looking for?
Hello. I'm trying to do a principle component analysis of the following file of "good values" - to create a good data signature. I need to find the eigenvectors of each data series.
How do I derive the eigenvalues (or eigenvectors) and what are they from this data set? (If you could explain how to do it in matlab, that would be great - but it's not necessary for me to understand how it works)
"Does every line in the excel file represent a 16x16 matrix?"
I'm not sure. I would have to say yes, if it is the only way to get the eigenvalues. I was just given the data as a known good set of data and asked to do a principal component analysys (academic). To do a PCA, I need to find the eigenvalues, but my linear algebra book doesn't speak of how to do this with just a continuous stream of data.
In this case, are the eigenvalues just the averages, modes, or median values? Each line of data seems to represent one variable - so the matrix is a 60x1? If that's the case, is it even possible to derive eigen values? thanks.
--I'm willing to take an educated guess. Even if it's not the correct eigenvalues or the proper way to do principal component analysis, I'm open to ideas. I'm thinking about giving up and just using the mode of the data or the average as the characteristic values because I need to implement this into a nueral net. I'm trying to put together a (academic) prognostics presentation. Any opinion is greatly valued. Thanks again.
Purchase this Solution
The expert finds eigenvalues for linear algebra.
See attached. Hope this helps.
Since the total number of columns is 256, it seems quite likely that each row represents a 16 x 16 matrix. Eigenvalues are only possible for square matrices, so this seems to be quite logical. In a nutshell, you have 15 matrices now, each 16 x 16 in dimension.
The decomposition of a square matrix A into ...
Purchase this Solution
Free BrainMass Quizzes
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Some questions on probability
This quiz test you on how well you are familiar with solving quadratic inequalities.
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.