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# matthieubulte

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Created Apr 30, 2021
Saddlepoint viz
View explore_saddlepoint.jl
 ### A Pluto.jl notebook ### # v0.12.21 using Markdown using InteractiveUtils # This Pluto notebook uses @bind for interactivity. When running this notebook outside of Pluto, the following 'mock version' of @bind gives bound variables a default value (instead of an error). macro bind(def, element) quote local el = \$(esc(element))
Created Apr 24, 2021
Symbolic expression from a string
View main.jl
 using MacroTools using Symbolics function parse(strexpr) expr = Meta.parse(strexpr) freevars = Set() expr = MacroTools.postwalk(x -> begin if isa(x, Symbol) && !isdefined(Base, x) push!(freevars, Variable(x)) Expr(:call, Variable, QuoteNode(x))
Created Apr 2, 2021
Using Symbolics.jl to compile sparse matrix operations
View main.jl
 using LinearAlgebra, BenchmarkTools, SparseArrays, SymbolicUtils, Symbolics ## Problem setup const z = zeros; wx = Float64[ 0 -1 0; 1 0 0; 0 0 0;]; Ak_1 = [ wx -I zeros(3,12);
Created Mar 26, 2021
Compiling sparse matrix multiplication
View main.jl
 using LinearAlgebra using BenchmarkTools using SparseArrays # To exploit the sparsity of the matrix as much as possible, pre-compile the multiplication operation # to skip the matrix entries look-up. Since the matrix is sparse this might generate only a few operations # which are all inlined. # Note that this only works with small matrices since otherwise the size of the function will just be to # large. # Note that this could also be avoided, but this is another topic.
Created Jul 16, 2019
View benchmark.ipynb
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Created Jun 7, 2019
View Removing collinearity via SVD-QR.ipynb
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Created Jun 6, 2019
View BBVI vs MLE for Logistic Regression.ipynb
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Last active Jun 4, 2019
Automatic MLE of a covariance matrix via Cholesky factorization
View Estimating a covariance.ipynb
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Last active Jun 1, 2019
RandomRDD with custom PRNG.ipynb
View RandomRDD with custom PRNG.ipynb
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Last active May 26, 2019
Removing collinearity via SVD (maybe?)
View Removing collinearity via SVD.ipynb
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