Viewing profile — marcle

Answering my own question: Umbra and PostgreSQL include "#" as an operator for bitwise xor, whereas DuckDB does not.

This is very interesting code that uses Umbra v0.2-957, PostgreSQL 17.2, and DuckDB v1.1.3. One minor point: some of the problems could not be implemented in DuckDB due to a missin…

Nice childhood memories: "Thunderbirds are go!" I always wondered how the palm trees were able to be flattened:).

This is a very interesting IDE to support data science. Has anyone tried using the Eclipse Theia IDE for data science? One of these IDEs may finally entice me away from ESS, magit …

"PSA" can also be probabilistic sensitivity analysis. I do health economic evaluations for prostate cancer screening -- which leads to interesting ambiguities:).

The article references the SSJ Java package which is developed by the author and his colleagues. This provides implementations for many RNGs -- and some nice tools for simulations:…

And see the discussion at https://discuss.ocaml.org/t/owl-project-concluding/14117

See also some discussion at https://www.reddit.com/r/ocaml/comments/1au329z/owl_project_...

ErgoAI is as "an enterprise-level extension of the Flora-2 system" which was recently open-sourced: https://github.com/ErgoAI . It seems to be well documented.

See https://fricas.github.io/ , which includes a 990 page book and detailed documentation.

This is a nicely balanced discussion of the two languages - with much food for thought.

I wrote a purely functional AD library in Mercury [0], which adapts a general approach from [1]. I believe that Owl provides a similar approach [2]. [0] https://github.com/mclement…

The following homage to Aphyr’s "Typing the technical interview" solves the N-queens problem using types in Typescript. This is both funny and insightful. https://www.richard-tower…

Waldek Hebisch, who is the maintainer for the Fricas computer algebra software, also maintains a 64-bit version of Poplog for amd64/x86_64: https://github.com/hebisch/poplog https:…

This is a free book on Owl. I have only looked at the chapter on automatic differentiation - and it looks good.

I find the solutions from https://github.com/qobi/AD-Rosetta-Stone/ to be very helpful, particularly for representing forward and backward mode automatic differentiation using a fu…

My go-to projects have varied over time: 1. An implementation of Fisher's exact test for 2x2 tables. This adapts the algorithm from R's fisher.test() function, which was implemente…

Another relevant software category is the statistical analysis languages, including SAS, Stata and SPSS. Old-school SAS included only two data types (floats and character strings),…

This is a very interesting article. The author notes: "There is a compiler for KL1 to C available [2], which seems to work, but suffers from bit rot." Note that Ueda and colleagues…