Optimization matchup: R’s glpkAPI vs Julia’s JuMP
(This article was first published on R snippets, and kindly contributed to R-bloggers) tl;dr: although I use R every day and love it, doing mathematical programming using Julia is much simpler and...
View ArticleDeep learning in the cloud with MXNet
(This article was first published on R snippets, and kindly contributed to R-bloggers) Last Friday together with Przemysław Szufel and Wit Jakuczun we were giving a live demo on introduction to deep...
View ArticleR+H2O for marketing campaign modeling
(This article was first published on R snippets, and kindly contributed to R-bloggers) My last post about telco churn prediction with R+H2O attracted unexpectedly high response. It seems that R+H2O...
View ArticleTelco churn prediction with R+H2O
(This article was first published on R snippets, and kindly contributed to R-bloggers) Recently together with my friend Wit Jakuczun we have discussed about a blog post on Revolution showing...
View ArticleSequence generation in R, Python and Julia
(This article was first published on R snippets, and kindly contributed to R-bloggers) Recently I was comparing implementation of sequence generation functions in R, Python (numpy) and Julia....
View ArticleComparing localsolver with Rglpk on k-medoids example
(This article was first published on R snippets, and kindly contributed to R-bloggers) Recently I have coauthored a new localsolver package that can be used to solve large scale optimization problems...
View ArticleClik here to view.
R Scrabble: Part 2
(This article was first published on R snippets, and kindly contributed to R-bloggers) Ivan Nazarov and Bartek Chroł gave very interesting comments to my last post on counting number of subwords in...
View ArticleClik here to view.
RGolf: NGSL Scrabble
(This article was first published on R snippets, and kindly contributed to R-bloggers) It is last part of RGolf before summer. As R excels in visualization capabilities today the task will be to...
View ArticleRGolf: rolling window
(This article was first published on R snippets, and kindly contributed to R-bloggers) I have learned a lot from my last RGolf post. Therefore today I have another problem from practice.You have a...
View ArticleRGolf
(This article was first published on R snippets, and kindly contributed to R-bloggers) Its time for some fun today - because its Friday as David Smith says :).There are many code golf sites, even some...
View ArticleTuning optim with parscale
(This article was first published on R snippets, and kindly contributed to R-bloggers) I often get questions what is the use of parscale parameter in optim procedure in GNU R. Therefore I have decided...
View ArticleGNU R vs Julia: is it only a matter of devectorization?
(This article was first published on R snippets, and kindly contributed to R-bloggers) Recently I have read a post on benefits of code devectorization in Julia. The examples given there inspired me to...
View ArticleSpeeding up model bootstrapping in GNU R
(This article was first published on R snippets, and kindly contributed to R-bloggers) After my last post I have recurringly received two questions: (a) is it worthwhile to analyze GNU R speed in...
View ArticleClik here to view.
Simulatin speed: GNU R vs Julia
(This article was first published on R snippets, and kindly contributed to R-bloggers) Recently there is a lot of noise about Julia. I have decided to test its speed in simulation tasks on my toy Cont...
View ArticleClik here to view.
Calibration of p-value under variable selection: an example
(This article was first published on R snippets, and kindly contributed to R-bloggers) Very often people report p-values for linear regression estimates after performing variable selection step. Here...
View ArticleClik here to view.
Cont model – Part II
(This article was first published on R snippets, and kindly contributed to R-bloggers) In my last post I have investigated properties of Cont model (you can download the paper here). Today I would...
View ArticleClik here to view.
Cont model back after a year
(This article was first published on R snippets, and kindly contributed to R-bloggers) During ESSA2013 conference I had a discussion about Cont model I have commented a year ago.In original paper Cont...
View ArticleClik here to view.
Visualizing optimization process
(This article was first published on R snippets, and kindly contributed to R-bloggers) One of the approaches to graph drawing is application of so called force-directed algorithms. In its simplest...
View ArticleClik here to view.
Genetic drift simulation
(This article was first published on R snippets, and kindly contributed to R-bloggers) While preparing for the new teaching semester I have created an implementation of NetLogo GenDrift P local in GNU...
View ArticleClik here to view.
Solving 9-puzzle with GNU R
(This article was first published on R snippets, and kindly contributed to R-bloggers) During holiday break I have decided to solve 9-puzzle, which is 3x3 variant of a well known 15-puzzle. The...
View Article![BLACKPINK – DEADLINE – EP [iTunes Plus M4A]](http://is1-ssl.mzstatic.com/image/thumb/Video211/v4/de/b3/b1/deb3b1d4-ba28-22e8-2428-ef97617b2a4b/90d54d743002a6d66308f217cd867947_Preview_Image_Intermediate_nonvideo_sdr_426725135_2574858051.png/316x316bb.webp)
