All Questions
Tagged with dimensional-analysis statistics
5
questions
1
vote
1
answer
108
views
What are the dimensions/units in the kernel density estimate?
I've been reading about the kernel density estiamte and the dimensions/units don't make sense to me.
Let $x$ have the dimensions of distance/length (L), i.e.
$$[x] = L,$$
where I am using square ...
- 1,027
0
votes
2
answers
538
views
Am I Misunderstanding Principal Component Analysis (PCA)?
Principal Component Analysis (PCA) has routinely caused me to question my understanding of mathematics, particularly linear algebra. Once again, PCA is present and I would like to engage to the ...
- 103
0
votes
0
answers
250
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Why does sparseness result in NMF solution?
I am having trouble understanding the interpretation of a sparse matrix: I am studying Non Negative Matrix Factorization, and I noticed that, even without specifying any constraint, I often obtain ...
8
votes
1
answer
1k
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What are the measurement units of Fisher information? (Dimensional Analysis)
I know that there is a strong relationship between Shannon entropy and thermodynamic entropy -- they even have the same units and differ only by a constant factor. This suggests that they both ...
- 21.3k
0
votes
1
answer
169
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Loss of information while projecting multidimensional data
I'm interested in the evaluation of the loss of information after projecting multidimensional data. Since the dimensional reduction is a common tool to analyse data,a question about the loss of ...
- 1