Re: [Jprogramming] DataFrames in J

Hi Pascal, From your email examples this looks promising. I'll need to spend a bit of time with your repo though to get a better understanding of what is going on here & what I think about it. Thanks! On Mon, Feb 14, 2022 at 12:27 PM 'Pascal Jasmin' via Programming < [email protected]> wro

Re: [Jprogramming] DataFrames in J

Hi Bo, I've lightly followed previous discussions of these ideas before on the forum. Have you had a go at modelling them in J? Maybe being able to use them in practice will help others understand what you clearly believe is something of value? Thanks, On Mon, Feb 14, 2022 at 4:21 AM 'Bo Jacoby' v

Re: [Jprogramming] DataFrames in J

updated kv to support inverted tables. https://github.com/Pascal-J/kv/blob/main/kv.ijs output for these functions are near bottom of  https://raw.githubusercontent.com/Pascal-J/kv/main/README.md 'Id Name Job Status' kv ,.&.:>"1 |: maybenum each > ','cut each cutLF 0 : 0 NB. from your example

Re: [Jprogramming] Is j turing-complete without parentheses?

This may be the consensus nowadays but some time ago one person thought that halting (when applicable) was needed, at least to some degree, to make "Zuse's Z3 a Universal Computer" Universal_Computer.pdf (fu-berlin.de)

Re: [Jprogramming] Is j turing-complete without parentheses?

One can get the last row of (3 (0 1 1 1 0 1 1 0 {~ #.)\ 0 0 , ] , 0:)^:(<11) 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 1 1 1 0 0 1 1 0 0 0 0 1 1 0 1 0 1 1 1 0 0 0 1 1 1 1 1 1 1 0 1 0 0 1 1 0 0 0 0 0 1 1

Re: [Jprogramming] DataFrames in J

Ric wrote: "I thought I'd share in case anyone has any thoughts, suggestions or wants to help take the idea further." This link has thoughts and suggestions. https://www.academia.edu/10031088/ORDINAL_FRACTIONS_the_algebra_of_data Thanks! Bo. Den søndag den 13. februar 2022 14.49.06 CET skrev

[Jprogramming] test

test only. -- For information about J forums see http://www.jsoftware.com/forums.htm

[Jprogramming] DataFrames in J

Inspired by recent threads, I've started experimenting with a DataFrame structure in J. I began by building off the 'general/misc/inverted' utilities so that a DataFrame is just a 2-row table, where the first row is a list of labels & the 2nd is an inverted table. It can be installed as 'tables/da