Publications by jmount
Bilingual Data Science
I’d like to share a new talk on bilingual data science. It is limited to R and Python, so it is a bit of a “we play all kinds of music, both Country and Western.” It has what I feel is a really neat example how I used Jetbrains Intellij PyCharm to quickly translate an R .Rmd file to a Python Juptyter Lab .ipynb notebook. The translation is ...
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What is a Good Test Set Size?
Introduction Teaching basic data science, machine learning, and statistics is great due to the questions. Students ask brilliant questions, as they see what holes are present in your presentation and scaffolding. The students are not yet conditioned to ask only what you feel is easy to answer or present. They ask what is needed to further their u...
14444 sym R (2420 sym/10 pcs)
What is a Good Test Set Size?
Introduction Teaching basic data science, machine learning, and statistics is great due to the questions. Students ask brilliant questions, as they see what holes are present in your presentation and scaffolding. The students are not yet conditioned to ask only what you feel is easy to answer or present. They ask what is needed to further their u...
14444 sym R (2420 sym/10 pcs)
Please share! Math for Programmers Humble Bumble!!
Nina and I are excited our book is one of the 16 titles featured in the Math for Programmers bundle on @humble! This bundle delivers the critical #math and #algorithms skills needed for careers in #programming and #datascience. Pay what you want & support #charity. https://www.humblebundle.com/books/math-for-programmers-manning-publications-books...
749 sym
Please share! Math for Programmers Humble Bumble!!
Nina and I are excited our book is one of the 16 titles featured in the Math for Programmers bundle on @humble! This bundle delivers the critical #math and #algorithms skills needed for careers in #programming and #datascience. Pay what you want & support #charity. https://www.humblebundle.com/books/math-for-programmers-manning-publications-books...
749 sym
Introducing wrapr::bc()
The wrapr R package supplies a number of substantial programming tools, including the S3/S4 compatible dot-pipe, unpack/pack object tools, and many more. It also supplies a number of formatting and parsing convenience tools: qc() (“quoting concatenate”): quotes strings, giving value-oriented interfaces much of the incidental convenience of n...
1716 sym R (197 sym/1 pcs)
Introducing wrapr::bc()
The wrapr R package supplies a number of substantial programming tools, including the S3/S4 compatible dot-pipe, unpack/pack object tools, and many more. It also supplies a number of formatting and parsing convenience tools: qc() (“quoting concatenate”): quotes strings, giving value-oriented interfaces much of the incidental convenience of n...
1716 sym R (197 sym/1 pcs)
It Has Always Been Wrong to Call order on a data.frame
In R it has always been incorrect to call order() on a data.frame. Such a call doesn’t return a sort-order of the rows, and previously did not return an error. For example. d <- data.frame( x = c(2, 2, 3, 3, 1, 1), y = 6:1) knitr::kable(d) x y 2 6 2 5 3 4 3 3 1 2 1 1 order(d) ## [1] 5 6 12 1 2 11 3 4 10 9 8 7 Notice th...
1653 sym R (217 sym/6 pcs) 2 tbl
It Has Always Been Wrong to Call order on a data.frame
In R it has always been incorrect to call order() on a data.frame. Such a call doesn’t return a sort-order of the rows, and previously did not return an error. For example. d <- data.frame( x = c(2, 2, 3, 3, 1, 1), y = 6:1) knitr::kable(d) x y 2 6 2 5 3 4 3 3 1 2 1 1 order(d) ## [1] 5 6 12 1 2 11 3 4 10 9 8 7 Notice th...
1654 sym R (217 sym/6 pcs) 2 tbl
Kelly Thorp Betting
I demonstrate a Kelly/Thorp betting system for the simple card game of guessing if the next card from a standard deck is red or black. I have a video of the play here. And a derivation of the betting strategy in R is here. A derivation of the proof you can’t build this sort of system for fair coin flip games is introduced here: When Profitable...
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