@eddelbuettel

Data Science. Open Source. Quant Research. R. C++. Debian. Linux. Clinical Professor, University of Illinois. Lots of coffee. And some running. Dormant account.

 On bsky rather than here
dirk.eddelbuettel.com
Joined March 2007
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Lecture slides for my 'Data Science Programming Methods' course STAT 447 from this Fall 2021 at U of Illinois are now accessible via stat447.com covering shell (incl sed/awk), markdown, git(hub), sql, lots of #Rstats up to packaging, and Docker. Enjoy!
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dang 0.0.17: New Features, Plus Maintenance A collection of a few small helper functions dirk.eddelbuettel.com/blog/2… #rstats
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/18#dang_0.0.17 describing release 0.0.17 of CRAN package dang.

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/18#dang_0.0.17 describing release 0.0.17 of CRAN package dang.

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RcppArmadillo 15.2.3-1 on CRAN: Upstream Update R bindings to powerful and expressive C++ matrix library dirk.eddelbuettel.com/blog/2… #rcpp #rstats
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/17#rcpparmadillo_15.2.3-1 describing release 15.2.3-1 of CRAN package RcppArmadillo

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/17#rcpparmadillo_15.2.3-1 describing release 15.2.3-1 of CRAN package RcppArmadillo

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BH 1.90.0-1 on CRAN: New Upstream Boost C++ header goodness for R dirk.eddelbuettel.com/blog/2… #rstats #rcpp
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/14#bh_1.90.0-1 describing release 1.90.0-1 of CRAN package BH.

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/14#bh_1.90.0-1 describing release 1.90.0-1 of CRAN package BH.

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r^4 post #056: Running r-ci with R-devel Adding R-devel to r-ci is a one-liner dirk.eddelbuettel.com/blog/2… #rstats #continuousintegration
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/11#056_r-ci_with_r-devel descrining r-ci based continuous integration with R-devel as a one-line addition

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/11#056_r-ci_with_r-devel descrining r-ci based continuous integration with R-devel as a one-line addition

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duckdb-mlpack 0.0.5: Added kmeans, version helpers, documentation Bringing mlpack machine learning to duckdb SQL dirk.eddelbuettel.com/blog/2… #duckdb #datascience #mlpack Added kmeans, version helpers, documention
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/02#duckdb-mlpack_0.0.5 describing release 0.0.5 of duckdb extension mlpack

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/12/02#duckdb-mlpack_0.0.5 describing release 0.0.5 of duckdb extension mlpack

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tidyCpp 0.0.8 on CRAN: Maintenance Tidy C++ wrapping of the C API for R dirk.eddelbuettel.com/blog/2… #rstats Mostly maintenance but also keeping up with R-devel changes to the C API reducing its surface
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/26#tidycpp_0.0.8 describing release 0.0.8 of CRAN package tidyCpp

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/26#tidycpp_0.0.8 describing release 0.0.8 of CRAN package tidyCpp

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RcppQuantuccia 0.1.3 on CRAN: Micro Maintenance Self-containted QuantLib Calendar Library for R dirk.eddelbuettel.com/blog/2… #rstats #rcpp Exchange / business calendaring based on QuantLib: initial package, but now `qlcal` is preferred / recommended
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/24#rcppquantuccia_0.1.3 describing release 0.1.3 of CRAN package RcppQuantuccia

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/24#rcppquantuccia_0.1.3 describing release 0.1.3 of CRAN package RcppQuantuccia

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RcppArmadillo 15.2.2-1 on CRAN: Upstream Update, OpenMP Updates R bindings to powerful and expressive C++ matrix library dirk.eddelbuettel.com/blog/2… #rstats #rcpp New upstream bug fixes, updated OpenMP setup
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/22#rcpparmadillo_15.2.2-1 describing release 15.2.2-1 of CRAN package RcppArmadillo

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/22#rcpparmadillo_15.2.2-1 describing release 15.2.2-1 of CRAN package RcppArmadillo

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digest 0.6.39 on CRAN: Micro Update Compact hash representations of arbitrary R objects dirk.eddelbuettel.com/blog/2… #rstats Small incremental release addressing two SAN issues revealed only once 0.6.38 was released last week.
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/19#digest_0.6.39 describing release 0.6.39 of CRAN package digest

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/19#digest_0.6.39 describing release 0.6.39 of CRAN package digest

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r^4 post #055: More Frequent r2u Updates r2u builds fully at GitHub Actions, multiple runs per day dirk.eddelbuettel.com/blog/2… #rstats #r2u Internal updates allowing for more frequent builds of CRAN binaries for Ubuntu
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/19#055_more_frequent_r2u describing post #055 in the r^4 series about more frequent and automated r2u builds

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/19#055_more_frequent_r2u describing post #055 in the r^4 series about more frequent and automated r2u builds

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digest 0.6.38 on CRAN: Several Updates Compact hash representations of arbitrary R objects dirk.eddelbuettel.com/blog/2… #rstats With special thanks to Carl Pearson, Bill Denney, Thierry Onkelinx, and Sergey Fedorov for contributions to this release.
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/12#digest_0.6.38 describing release 0.6.38 of CRAN package digest.

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/12#digest_0.6.38 describing release 0.6.38 of CRAN package digest.

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duckdb-mlpack 0.0.4: Added random forest and logistic regression Bringing mlpack machine learning to duckdb SQL dirk.eddelbuettel.com/blog/2… Adds random forest + logistic regression, reworks interface, adds new state variable for verbosity, expands documentation and adds unit tests
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/11#duckdb-mlpack_0.0.4 describing release 0.0.4 of the duckdb community extension mlpack.

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/11#duckdb-mlpack_0.0.4 describing release 0.0.4 of the duckdb community extension mlpack.

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RcppCNPy 0.2.14 on CRAN: Minor Maintenance Read/write NumPy data from R dirk.eddelbuettel.com/blog/2… #rstats #rcpp
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/03#rcppcnpy_0.2.14 describing release 0.2.14 of CRAN package RcppCNPy

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/03#rcppcnpy_0.2.14 describing release 0.2.14 of CRAN package RcppCNPy

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duckdb-mlpack 0.0.3: macOS binaries, unit tests, more outputs Bringing mlpack machine learning to duckdb SQL dirk.eddelbuettel.com/blog/2… #duckdb #mlpack
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/03#duckdb-mlpack_0.0.3 describing release 0.0.3 of the duckdb community extension mlpack

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/11/03#duckdb-mlpack_0.0.3 describing release 0.0.3 of the duckdb community extension mlpack

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R^4 post #054: Faster r-ci Contimuous Integration via r2u Container Accelerating Continous Integration at GitHub Actions dirk.eddelbuettel.com/blog/2… #rstats
Screenshot one of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/27#054_faster_r-ci describing a container-based improvement for Continuous Integration at GitHub Actions

ALT Screenshot one of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/27#054_faster_r-ci describing a container-based improvement for Continuous Integration at GitHub Actions

Screenshot two of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/27#054_faster_r-ci describing a container-based improvement for Continuous Integration at GitHub Actions

ALT Screenshot two of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/27#054_faster_r-ci describing a container-based improvement for Continuous Integration at GitHub Actions

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duckdb-mlpack 0.0.2: mlpack is now a duckdb community extension Bringing mlpack machine learning to duckdb SQL dirk.eddelbuettel.com/blog/2…
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/26#duckdb-mlpack_0.0.2 announcing that mlpack is now a duckdb community extension

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/26#duckdb-mlpack_0.0.2 announcing that mlpack is now a duckdb community extension

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RcppArmadillo 15.2.0-0 on GitHub: New Upstream, Simpler OpenMP R bindings to powerful and expressive C++ matrix library dirk.eddelbuettel.com/blog/2… #rcpp #rstats GitHub-only release skipping CRAN to slow the update cadence per CRAN Policy
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/20#rcpparmadillo_15.2.0-0 describing GitHub (only, no CRAN this time) relase 15.2.0-0 of CRAN package RcppArmadillo

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/20#rcpparmadillo_15.2.0-0 describing GitHub (only, no CRAN this time) relase 15.2.0-0 of CRAN package RcppArmadillo

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ML quacks: Combining duckdb and mlpack dirk.eddelbuettel.com/blog/2… A 'minimally viable product / demo' of extending @duckdb with #mlpack
Screenshot one of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/17#ml_quacks_combining_duckdb_mlpack describing a duckdb extension connecting to mlpack

ALT Screenshot one of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/17#ml_quacks_combining_duckdb_mlpack describing a duckdb extension connecting to mlpack

Screenshot one of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/17#ml_quacks_combining_duckdb_mlpack describing a duckdb extension connecting to mlpack

ALT Screenshot one of two of blog post at https://dirk.eddelbuettel.com/blog/2025/10/17#ml_quacks_combining_duckdb_mlpack describing a duckdb extension connecting to mlpack

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qlcal 0.0.17 on CRAN: Regular Update QuantLib Business / Exchange Calendaring for R dirk.eddelbuettel.com/blog/2… #rstats #rcpp
Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/14#qlcal-r_0.0.17 describing release 0.0.17 of CRAN package qlcal

ALT Screenshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/14#qlcal-r_0.0.17 describing release 0.0.17 of CRAN package qlcal

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RcppSpdlog 0.0.23 on CRAN: New Upstream Modern C++ logging for R extension packages dirk.eddelbuettel.com/blog/2… #rcpp #rstats
Screeshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/12#rcppspdlog_0.0.23 describing release 0.0.23 of CRAN package RcppSpdlog

ALT Screeshot of blog post at https://dirk.eddelbuettel.com/blog/2025/10/12#rcppspdlog_0.0.23 describing release 0.0.23 of CRAN package RcppSpdlog

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