Juliaup release channel now points to v1.12.6โ€ผ๏ธ

Don't forget to do

$ juliaup self update && juliaup update

#JuliaLang 

OK, So progress on getting my son ready to learn Quarto for his term paper project. I have the quarto tar.gz distribution and julia via juliaup. Set up a manifest. Included typst in the manifest, and a number of other things. Then outside the container running codium. using the manifest #guix shell --emulate-fhs allows #julialang and quarto to run just fine. So he can edit his document and then at the terminal type #quarto render document.qmd and it runs julia and renders to pdf via typst.

RE: https://floss.social/@rdnielsen/116365121149129752

The third and last of the series on unmixing using NMF is now posted at

https://dblog.vitumbre.tech/dart/unmixing-using-nmf-part-3-assessing-accuracy-of-end-members/

Part 3 illustrates the variability of results that can occur when repeatedly unmixing the same data set, and presents approaches to addressing the resultant uncertainty.

#DataAnalysis #DataExploration #Unmixing #NMF #Python #JuliaLang #RStats

RE: https://floss.social/@rdnielsen/116363795536617194

Part 2 of this series on unmixing is now available:

https://dblog.vitumbre.tech/dart/unmixing-using-nmf-part-2-evaluating-the-number-of-end-members/

Part 2 addresses the challenge of deciding how many end members are in a data set, recommends algorithms for Python, Julia, and R, and illustrates how several factors affect that determination.

#DataAnalysis #DataExploration #Unmixing #NMF #Python #JuliaLang #RStats

I just posted part 1 of a 3-part series on unmixing of data sets using non-negative matrix factorization.

https://dblog.vitumbre.tech/dart/unmixing-using-non-negative-matrix-factorization-nmf-part-1-introduction-and-implementation/

Part 1 contains implementations in Python, Julia, and R, and includes an assessment of the relative accuracy of these implementations.

Parts 2 and 3 will follow shortly, and will contain more detail on the identification of, and accurate characterization of, unmixing end members.

#DataAnalysis #DataExploration #Python #JuliaLang #RStats #Unmixing #NMF

Unmixing Using Non-negative Matrix Factorization (NMF). Part 1: Introduction and Implementation

Data sets that can be represented as a matrix of cases (rows) and variables (columns) often have structure within them that is not immediately apparent. There are a number of techniques for identifying and characterizing hidden structure in data sets. Unmixing is a method that is appropriate when the data

Stones in my Shoe

This study investigates the possibilities of applying classical MCDM methods to grey numbers by leveraging operator overloading and multiple dispatch features of Julia programming language.

https://dx.doi.org/10.26650/acin.1714210

#julialang 

Istanbul University Press

Implication: #python #c et al were not designed with science and math in mind? โ€œArray indices in #julialang, as in Fortran and many other languages designed with scientific and mathematical work in mind, start at 1.โ€
Coming from the comfort of RStudio #Rstats, learning package and environment management via #julialang has been informative. 1/4