The Array Cast

Array Cast - July 21, 2023 Show NotesThanks to Bob Therriault, Conor Hoekstra, and Adam Paszke for gathering these links:[01] 00:01:49 J on AWS https://code.jsoftware.com/wiki/System/Installation/Cloud              KXcon '23 videos https://kx.com/kx-con-23-recordings/              KXcon '23 ArrayCast review episode https://www.arraycast.com/episodes/episode54-kxcon23[02] 00:04:10 PyTorch https://pytorch.org/              Dex Programming Language https://github.com/google-research/dex-lang/              Coursera https://www.coursera.org/[03] 00:07:48 Torch7 https://github.com/torch/torch7              Torch https://en.wikipedia.org/wiki/Torch_(machine_learning)              Lua Programming Language https://www.lua.org/              Python Programming Language https://www.python.org/              Alpha Go documentary https://en.wikipedia.org/wiki/AlphaGo_(film)              Tensorflow Programming Language https://www.tensorflow.org/              LuaJIT interpreter  https://luajit.org/[04] 00:15:43 Automatic differention https://en.wikipedia.org/wiki/Automatic_differentiation[05] 00:18:25 GPU https://en.wikipedia.org/wiki/Graphics_processing_unit              TPU ht

Ken Iverson, a renowned figure in the field of array programming, discusses learning and teaching array programming languages. The speakers explore different approaches to learning array languages and the challenges involved in transitioning from other programming paradigms. They emphasize the importance of mentorship and mention various educational resources. The chapter also delves into the advantages and disadvantages of different teaching methods, including tutorials, videos, and diagrams. The speakers highlight the excitement of working with QV code and the benefits of interpreted array languages. They also touch upon the challenges of working with fixed recordings and the process of choosing between different approaches to problem-solving.

Array Cast - June 23, 2023 Show NotesThanks to Bob Therriault for gathering these links:Opening ‘cow sheep cat dog’Conor Hoekstra ‘Algorithms as a Tool of Thought’Alan Perlis ‘In Praise of APL’KeyUnderNuvoc - J VocabularyHome SitesAPL J k BQN qGetting startedAPL J k BQN qStephen Taylor ‘Discovering APL’

Array Cast - June 9, 2023 Show NotesThanks to Bob Therriault, Adám Brudzewsky, and Marshall Lochbaum for gathering these links:[01] 00:01:35 APL Show https://apl.show/2023/06/02/Terminology-Files-and-Array-Theory.html              U-Net CNN in APL: Exploring Zero-Framework, Zero-Library Machine Learning https://dl.acm.org/doi/10.1145/3589246.3595371              Tokyo Meetup https://www.meetup.com/en-US/apl-j-k-meetup/events/kkzgdtyfcjbzb/              Northern California APL ACM Meetup https://apl.wiki/SIGAPL#APL_BUG[02] 00:03:16 Robert Bernecky https://en.wikipedia.org/wiki/Robert_Berneckyhttps://aplwiki.com/wiki/Bob_Bernecky              I.P. Sharp Associates https://en.wikipedia.org/wiki/I.P._Sharp_Associates              PERT https://en.wikipedia.org/wiki/Program_evaluation_and_review_technique[03] 00:06:57 Bernecky Zoo Story Dyalog https://dyalog.tv/Dyalog16/?v=1N_oYD-ZkX80              Ian Sharp https://www.dyalog.com/blog/2021/07/thank-you-ian-sharp/              Roger Moore https://en.wikipedia.org/wiki/Roger_Moore_(computer_scientist)              Speeding up Dyadic Iota and Dyadic Epsilon, 1973 Copenhagen Conference https://www.researchgate.net/publication/242359964_Speeding_up_dyadic_iota_and_dyadic_epsilon[04] 00:10:49 Replicate https://aplwiki.com/wiki/Replicate              Partitioned Enclose https://aplwiki.com/wiki/Partitioned_Enclose#Non-Bool

Array Cast - May 26, 2023 Show NotesThanks to Bob Therriault, Marshall Lochbaum, Conor Hoekstra, Adám Brudzewsky and Nick Psaris for gathering these links:[01] 00:02:15 Eric's post J Programming Language http://www.jsoftware.com/pipermail/programming/2023-May/062524.html              J wiki https://code.jsoftware.com/wiki/Main_Page[02] 00:03:23 Programming language design on StackOverflow  https://languagedesign.stackexchange.com/[03] 00:05:04 Phineas Porter's blog post https://iabdb.me/2021/05/28/idempotent-moving-window-is-simply-a-reduction/[04] 00:08:00 ArrayCast Episode 3 https://www.arraycast.com/episodes/episode-02-challenges-facing-the-array-languages              ArrayCast Episode 4 https://www.arraycast.com/episodes/episode-03-what-is-an-array              ArrayCast Episode 5 https://www.arraycast.com/episodes/episode-04-responding-to-listeners-email              ArrayCast Episode 42 https://www.arraycast.com/episodes/episode42-nick-psaris-q              "Q Tips" by Nick Psaris https://www.goodreads.com/book/show/25221469-q-tips              "Fun Q" by Nick Psaris https://www.goodreads.com/book/show/54656615-fun-q[05] 00:09:40  PyKX https://kx.com/pykx/              Python Programming Language https://en.wikipedia.org/wiki/Python_(programming_language)[06] 00:12:27 peach in q https://code.kx.com/q/basics/peach/[07] 00:16:10 Z compression https://en.wikipedia.org/wiki/Zstd            &nb

Array Cast - May 12, 2023 Show NotesThanks to Bob Therriault, Marshall Lochbaum and Rich Park for gathering these links:[01] 00:01:45 Decker https://beyondloom.com/decker/index.html              John Earnest Episode 41 https://www.arraycast.com/episodes/episode41-john-earnest              John Earnest Episode 43 https://www.arraycast.com/episodes/episode43-john-earnest-decker[02] 00:03:40 Gordon Hoekstra Award https://twitter.com/Gordon_Hoekstra/status/1654667681709056000/photo/1              J Wiki Browser Video  https://code.jsoftware.com/wiki/Wiki/Report_of_Meeting_2023-05-04[03] 00:05:43 APL Show https://apl.show/2023/05/02/Primitives-Extravaganza-Continued.html              Array Notation for APL https://aplwiki.com/wiki/Array_notation[04] 00:07:50 1010 Data k developers https://www.1010data.com/company/careers/#Openpositions[05] 00:08:58 Kadane's Algorithm https://en.wikipedia.org/wiki/Maximum_subarray_problem[06] 00:14:13 Troels Henriksen Episode on ArrayCast https://www.arraycast.com/episodes/episode37-futhark              Futhark https://en.wikipedia.org/wiki/Futhark_(programming_language)              Carnegie Mellon Parlay https://dl.acm.org/doi/pdf/10.1145/3350755.3400254              Guy Steele Fortress https://en.wikipedia.org/wiki/Fortress_(programming_language)[07] 00:19:47 Stevan Apter Episode https://www.arraycast.com/episodes/episode26-stevan-apter              No Stinking Loops (Stevan's blog) https://www.nsl.com/[08] 00:21:42 Combinators https://en.wikipedia.org/wiki/Combinatory_logic[09] 00:23:28 Nothing in BQN https://mlochbaum.github.io/BQN/doc/expression.html#nothing[10] 00:24:49 Sliding Subarray Beauty https://leetcode.com/problems/sliding-subarray-beauty/[11] 00:29:50 Big O Notation https://en.wikipedia.org/wiki/Big_O_notation[12] 00:37:35 peach q https://code.kx.com/q/basics/peach/              SV in Dyalog APL https://aplwiki.com/wiki/APL.SV              sv in q https://code.kx.com/q/ref/sv/              vs in q https://code.kx.com/q/ref/vs/[13] 00:49:05 aplcart https://aplwiki.com/wiki/APLcart[14] 00:55:33 Dyalog Peach http://docs.dyalog.com/14.0/Dyalog%20APL%20PEACH%20Reference%20Guide.pdf              Futures and isolates https://docs.dyalog.com/latest/Parallel%20Language%20Features.pdf[15] 01:07:25 Henry Rich TPL Episode https://www.arraycast.com/episodes/episode50-fold

Array Cast - April 28, 2023 Show NotesThanks to Bob Therriault, Marshall Lochbaum, and Adám Brudzewsky for gathering these links:[01] 00:01:35 J903 on iOS https://code.jsoftware.com/wiki/Guides/iOS              J9.5 https://code.jsoftware.com/wiki/System/Installation#J9.5_BETA              m. Modular arithmetic https://code.jsoftware.com/wiki/Vocabulary/mdot[02] 00:02:53 Suggestions for Stephen's book  SJT@5jt.com[03] 00:06:31 Rich's Problem Solving video https://www.youtube.com/watch?v=O73HYH0p8eo[04] 00:07:49 Henry Rich Fold Episode https://www.arraycast.com/episodes/episode48-henry-rich              Kadane's Algorithm https://en.wikipedia.org/wiki/Maximum_subarray_problem[05] 00:11:20 J Under (Dual) Conjunction  https://code.jsoftware.com/wiki/Vocabulary/ampdot              Fold in q https://code.kx.com/q/ref/accumulators/#while              Fold in BQN https://mlochbaum.github.io/BQN/doc/fold.html              Fold(Reduce) in APL https://aplwiki.com/wiki/Reduce              Fold in J  https://code.jsoftware.com/wiki/Vocabulary/fcap[06] 00:15:07 Taylor Series https://en.wikipedia.org/wiki/Taylor_series[07] 00:22:10 J Prefixes https://code.jsoftware.com/wiki/Vocabulary/bslash              J Suffixes https://code.jsoftware.com/wiki/Vocabulary/bslashdot[08] 00:28:02 q Scan Iterator https://code.kx.com/q/ref/iterators/[09] 00:36:49 Tom McGuire's Kadane Tutorial https://code.jsoftware.com/wiki/Essays/Kadane_Algorithm;_J_Tutorial              Will Gajate's J-k Fold equivalents https://code.jsoftware.com/wiki/User:Will_Gajate/FoldVariants[10] 00:46:09 Guy Steele's Fortress https://en.wikipedia.org/wiki/Fortress_(programming_lang

Array Cast - April 14, 2023 Show NotesThanks to Bob Therriault and Adám Brudzewsky for gathering these links:[01] 00:01:37 APLSeeds 2023: https://dyalog.tv/APLSeeds23              APL Germany Spring meeting: https://apl-germany.de/apl-germany-fruehjahrstagung-2023/              APL Show Episode "Change the Way You Think - Part 1": https://apl.show/2023/03/09/Reaction-to-Change-the-way-you-write-Change-the-way-you-think-part-1.html              APL Show Episode "Change the Way You Think - Part 2": https://apl.show/2023/03/30/Reaction-to-Change-the-way-you-write-Change-the-way-you-think-part-2.html              Fold and Other Conjunctions ArrayCast Episode: https://www.arraycast.com/episodes/episode50-fold[02] 00:10:05 Perlis "A programming language is low level when it demands attention to the irrelevant" https://www.brainyquote.com/quotes/alan_perlis_177161[03] 00:11:25 Smalltalk Programming Language: https://en.wikipedia.org/wiki/Smalltalk              Lisp Programming Language: https://en.wikipedia.org/wiki/Lisp_(programming_language)              Haskell Programming Language: https://en.wikipedia.org/wiki/Haskell[04] 00:21:30 J forums: https://code.jsoftware.com/wiki/System/Forums[05] 00:35:40 J Incunabulum: https://code.jsoftware.com//wiki/Essays/Incunabulum              Inuit Number System: https://www.scientificamerican.com/article/a-number-system-invented-by-inuit-schoolchildren-will-make-its-silicon-valley-debut/[06] 00:39:10 Roman Numerals: https://en.wikipedia.org/wiki/Roman_numerals              A History of Mathematical Notations: https://www.amazon.com/History-Mathematical-Notations-Dover-Mathematics/dp/0486677664[07] 00:43:10 Danish Vigesimal System: https://en.wikipedia.org/wiki/Numeral_(linguistics)#20:_vigesimal[

Array Cast - March 31, 2023 Show NotesThanks to Bob Therriault, Conor Hoekstra and Marshall Lochbaum for gathering these links:[01] 00:01:45 Luther J. Woodrum Obituary https://www.fraryfuneralhome.com/obituaries/Luther--J.-Woodrum?obId=27482014#/celebrationWall                                         https://www.linkedin.com/in/luther-woodrum-b5775a4a?trk=public_profile_browsemap              Lenore Mullin Mathematics of Arrays https://www.linkedin.com/in/lenore-mullin-268b0a13[02] 00:03:46 Episode 6 https://www.arraycast.com/episodes/episode-06-henry-richs-deep-dive-into-j              Episode 18 https://www.arraycast.com/episodes/episode18-henry-rich-presents-j903              Episode 48 https://www.arraycast.com/episodes/episode48-henry-rich[03] 00:04:40 Command to run Fold using J Playground - install 'github:jsoftware/dev_fold'              J Fold https://code.jsoftware.com/wiki/Vocabulary/fcap              APL Reduce / https://aplwiki.com/wiki/Reduce              APL Scan \ https://aplwiki.com/wiki/Scan              J Scan /\ https://code.jsoftware.com/wiki/Vocabulary/bslash                        https://code.jsoftware.com/wiki/Vocabulary/slash              J Grade /: or \: https://code.jsoftware.com/wiki/Vocabulary/slashco[04] 00:10:02 Functional Programming Language  https://en.wikipedia.org/wiki/Functional_programming              C Programming Language  https://en.wikipedia.org/wiki/C_(programming_language)[05] 00:12:30 Iverson Notation  https://www.jsoftware.com/papers/APL.htm    &n

Array Cast - March 17, 2023 Show NotesThanks to Bob Therriault, Richard Park, Conor Hoekstra and Adám Brudzewsky for gathering these links:[01] 00:01:55 APL problem solving competition https://contest.dyalog.com/              Kattis online competition https://open.kattis.com/              APL Seeds '23 https://www.dyalog.com/apl-seeds-user-meetings/aplseeds23.htm              Linux Format Magazine https://linuxformat.com/linux-format-300.html              The APL Show - Reaction to "Change the Way You Think" https://apl.show/2023/03/09/Reaction-to-Change-the-way-you-write-Change-the-way-you-think-part-1.html              The APL Campfire - Norman Thomson https://www.youtube.com/watch?v=jPujK-GvHGQ&list=PLYKQVqyrAEj91hZHbJiWOENHZP4JT8VFv[02] 00:06:16 Ed Gottsman's Wiki Gui https://www.youtube.com/watch?v=j17E_KUgKxk[03] 00:07:09 Why I Love BQN So Much https://www.youtube.com/watch?v=mRT-yK2RTdg              J software https://www.jsoftware.com/#/              Dyalog APL https://www.dyalog.com/[04] 00:08:12 Adám's APL Quest https://www.youtube.com/@abrudz/playlists[05] 00:09:50 q download https://kx.com/kdb-personal-edition-download/[06] 00:13:10 Shakti https://shakti.com/[07] 00:14:10 Emery Berger "Performance Really Matters" https://www.youtube.com/watch?v=7g1Acy5eGbE[08] 00:17:14 Three consecutive odds ADSP 'scanductions' episode https://adspthepodcast.com/2023/03/03/Episode-119.html[09] 00:19:40 Rich Park's "A Programming Language for Thinking About Algorithms" https://www.dyalog.com/uploads/files/presentations/ACCU20210520.pdf[10] 00:21:00 Windows function in BQN https://mlochbaum.github.io/BQN/doc/windows.html[11] 00:27:22 Fold in J https://code.jsoftware.com/wiki/Vocabulary/fcap              Scan https://aplwiki.c