jxy

35 ms·

361.
by jxy 9y ago
Some people hate statistics for a reason, and this is the exact reason. It is outrageous how the author conveniently manipulated the data to support the claim in their paper. For those of you who want to do your own analysis, assuming thei
362.
by jxy 9y ago
LIGO is really the 21st century telescope. Instead of receiving electromagnetic waves / photons, it receives spacetime waves / (gravitons???). As we have been building larger and larger telescopes, we would certainly build large
363.
by jxy 9y ago
Point 1, we know. Just look at all kinds of the insects. Point 2, this reads as some advantages compared to our current computers.
364.
by jxy 9y ago
I've been doing the following for my keynote slides. 1. Write in emacs org-mode code blocks 2. Export to html (requires htmlize) 3. Copy and paste the html from safari to keynote The Emacs theme determines the syntax high
365.
by jxy 9y ago
If your EDITOR is already emacs, just use 'wdired'. https://www.gnu.org/software/emacs/manual/html_node/emacs/Wd...
366.
by jxy 9y ago
Looks nice. Would there be a native version, for which data are only stored locally? You would certainly have some professional market with that. I would pay for it just to replace LaTeXiT.
367.
by jxy 9y ago
Are there any programs that can render unicode maths correctly? Looks like we don't need MathML anymore.
368.
by jxy 9y ago
Where do you get the information that Aurora is canceled?
369.
by jxy 9y ago
I like it that they are adding more and more functionalities from J, probably because Roger Hui is involved in this. The namespace system in Dyalog APL works far better than J's locale, IMHO. The only problem is that you can't ge
370.
by jxy 9y ago
Since when did people start to label C implementation as "Unix shell"?
371.
by jxy 9y ago
> * I want to be able to simulate GR. > * I want to understand QFT > * I want to be able to simulate atoms and molecules from first-principles. With the current technology, assuming standard model of particle physics
372.
by jxy 9y ago
For those of you complaining about infrequent updates here, why do you need frequent update for a GTD/TODO management system? I would prefer a relative stable system that I don't have to readapt myself to. Disclaimer: I use a comb
373.
by jxy 9y ago
Nice. I was just looking at PR#5677 yesterday. Good job!
374.
by jxy 9y ago
Am I reading it correctly? They want people to optimize their code without directly accessing their hardware. This is not how it should be done. Is it really from NASA? Are they lacking HPC programmers? Or any one knows HPC? Either the
375.
by jxy 10y ago
Reinventing Prolog?
376.
by jxy 10y ago
It seems have no improvement for badly conditioned problems, i.e. k >> 1. The convergence rate is 1 with or without the damped momentum.
377.
by jxy 10y ago
I always like comparing coding with writing. Depending on your proficiency, you might want to write a pulp fiction, a news article, a PhD thesis, or Shakespeare. You might write in English, American English, Chinese, classical Chinese, Ja
378.
by jxy 10y ago
APL had 50 years. Julia had 5.
379.
by jxy 10y ago
RIDE is already quite good. It is simple and effective and in a sense better than jupyter. Throw in some D3 they would get the graphical capabilities, just like how jhs does it. A comercial example? Mathematica. Imagine a Mathematica clo
380.
by jxy 10y ago
Open source is a chicken-and-egg problem. If you want success stories, look at c/c++/fortran/perl/python/R/julia, old and new. I don't have a solution. I just blame IBM and all others who monetized on A
381.
by jxy 10y ago
I would be sold if Dyalog had a graphical environment equivalent to J's jqt, something you can at least plot the data. Everything I can find with Dyalog is .Net and Windows. RIDE seems to be the right step forward, but still much inf
382.
by jxy 10y ago
Hitting each representable floating point number with an equal probability does not generate an approximately uniform distribution of [0,1). For a sufficiently small positive number, eps, you have to have equal probabilities of numbers fal
383.
by jxy 10y ago
gnuplot is very nice in working like this. I've been using a script [0] to pipe data directly. [0] https://gist.github.com/jxy/88f2972d3994dfea06fd2d3833b7ac8a
384.
by jxy 10y ago
For people who love python here, do you use python 2 or python 3? 2.7? 2.8? 3.5?
385.
by jxy 10y ago
Google photos does this through their server. Apple Photos does this through your phone, or your laptop. (Data from these two are not synced???)
386.
by jxy 10y ago
The article shows an excellent example of 'moving fast and breaking things': < In comparison, Python started on CVS, moved to Subversion < in 2004, then to Mercurial in 2009, and is now moving < over to GitHub.
387.
by jxy 10y ago
> their main drawback: k/q (like clever regexes) are often write-only code This depends on the code reader's mentality. One line of k (or q or j or apl) would do what 10 lines of verbose languages do. For verbose lan
388.
by jxy 10y ago
For a columnar database, that's a continuous chunk of memory. Assuming 32bit q defaults to 32bit int, 1.1 billion integers across four machines means each 64-core (with 4 threads/core) KNL chip is averaging over 275M elements of
389.
by jxy 10y ago
I have a feeling that when paper came out, parchment had probably been praised as "the real 'killer surface'". By the way, writing in sand is really much better than writing with a chunk of graphite. Clean hands!
390.
by jxy 10y ago
Since you are using ¨, ⍵ is a scalar, so you don't need the ∘. Translated back to J ((;'Buzz';'Fizz';'FizzBuzz'"_){~2#.0=3 5|])"0>:i.100 The boxed list in J feels a bit cumbersome compa

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