Purely functional interface to basic linear algebra and other numerical computations, internally implemented using GSL, BLAS and LAPACK.
Questions tagged [hmatrix]
35 questions
0
votes
2 answers
How much space does ridge regression require?
In Haskell, ridge regression can be expressed as:
import Numeric.LinearAlgebra
createReadout :: Matrix Double → Matrix Double → Matrix Double
createReadout a b = oA <\> oB
where
μ = 1e-4
oA = (a <> (tr a)) + (μ * (ident $ rows a))
oB =…
penkovsky
- 893
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1 answer
Trouble installing hmatrix through MSYS2 on Windows 10
I've been trying to install hmatrix on my (64-bit) Windows 10 computer; after searching through and trying many possible solutions (including the instructions under "Windows" and "Alternative Windows Build" given here), I decided to pursue the…
Christian Gorski
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0
votes
1 answer
How to parse multiple matrices from single file to hmatrix?
I have a txt file with several integer matrices with different dimensions that I want to parse into an hmatrix package representation, but I can't find any suitable functions. The text file contains the following form:
[single-value]
[single-row…
manews
- 340
- 2
- 12
0
votes
1 answer
hMatrix breaks in a file, what could be the cause?
I have been using the hMatrix package in the ghci environment, and all works fine (I can for instance import Numeric.LinearAlgebra.HMatrix). However, when I attempt to import and utilise the same things in a script, everything breaks (I truncated…
stian
- 1,947
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0
votes
1 answer
HMatrix Matrix Double - Double product
f1 :: Mesh -> Matrix Double
f1 me = knx where
hx :: Double
(hx , _) = h me
a, knx :: Matrix Double
a = fromLists [[1,2], [3,4]]
knx = hx * a
-- knx = 2 * a
I don't get why in the above function, mutliplying by 2 works whereas…
ocramz
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