ivan_ah

29 ms·

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by ivan_ah 6y ago
Thx for plug. Indeed it would be a good book for any highschooler interested in more advanced topics. > I'm surprised it's expensive now. Yeah amazon pricing is weird. My intent is for the book to be sold ~$30, but if I tell th
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by ivan_ah 6y ago
Yey softcover. It's the best (only?) way to get real typesetting for print (LaTeX --> PDF), but also modern digital formats (ePub + mobi). I'm glad to hear more people are using it.
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by ivan_ah 6y ago
Gumroad has been pretty solid for all things I've tried. They have subscriptions, which is not exactly Patreon, but essentially the same kind of thing (recurrent payments).
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by ivan_ah 6y ago
Yeah me too. "Judging Books by Their Covers" = story about how committees sometimes select book that haven't even been written yet (just based on the book cover images)!
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by ivan_ah 6y ago
A very useful trick for copyediting and proofreading is to use a text-to-speech tool. The default voice on Mac is quite good. I use it all the time to proofread intros, and explanation sections in my books. For math-heavy or code-blocks, it
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by ivan_ah 6y ago
So, this is like Neonto Native Studio[1] but with less focus on looks and UI, and more on business worflows? I can see how this would be useful for many businesses with rag-tag processes, being able to combine on a easy-to-watch app that ev
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by ivan_ah 6y ago
When you work on your project, please consider including a "library" component with selected materials and resources on various topics. I know you can get all the info on the internet, but sometimes a smaller, local selection of b
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by ivan_ah 6y ago
Not the OP, but I've got some links for you: 1. https://en.wikipedia.org/wiki/Singular_value_decomposition#A... of which the "Low-rank matrix approximation" is the most important one (it's like look
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by ivan_ah 6y ago
Yeah. I don't know why LA courses focus so much on eigenvalues, and don't talk much about SVD. It seems like an obvious next step once you know how to compute eigenvalues, but SVDs are always covered in passing and superficially (
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by ivan_ah 6y ago
link to paper: https://www.sciencedirect.com/science/article/abs/pii/S12623... or https://sci-hub.tw/10.1016/j.diabet.2019.06.004
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by ivan_ah 6y ago
One thing to note is that there is no universally agreed upon convention for denoting math objects. Textbook and research paper start with a section on notation to clarify the symbols they will use. Notation often varies between fields, aca
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by ivan_ah 6y ago
Thx. Much better link than the "newswire" link. They also have a very nice "docs" site: https://silq.ethz.ch/overview
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by ivan_ah 6y ago
In case that's helpful, here is the code we use to generate waveforms using: .mp3 -(1)-> .wav -> numpy -> matplotlib: https://github.com/learningequality/pressurecooker/blob/mast... ffmpeg is us
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by ivan_ah 6y ago
I have been using the unofficial fork Fabric3 ( https://pypi.org/project/Fabric3/ == https://github.com/mathiasertl/fabric/ ) for many years with great success (completely automated the IT
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by ivan_ah 6y ago
To be honest, I think the book is used widely because of the title. There are many (hundreds, perhaps even thousands) of good math books out there with standard titles, and from what I have seen, most learners will not bother with them, e
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by ivan_ah 6y ago
Thanks for the plug elric! Anyone interested in seeing what the book is about can check the (slightly outdated) preview here: https://minireference.com/static/excerpts/noBSguide_v5_previ... (a more descriptive tit
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by ivan_ah 6y ago
Here are some tips/hacks/info that might be helpful: - Use a voice recorder (step a way from the computer an dictate to yourself what you want to say--ideally while walking), then come back to the computer and transcribe what you
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by ivan_ah 6y ago
I also use the printed medium for final proofreading a lot. I feel a good 10 to 20 IQ points smarter when reading on paper, and catch a lot of mistakes and spot sections that need fixing. It's a lot of work, but for important writing,
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by ivan_ah 6y ago
Nice article. In particular the -i flag seems really useful. I'd like to add two packages I learned about recently that I like A LOT: pyrasite and PySnooper. Use pyrasite to "attach" to an existing running Python process (i.e
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by ivan_ah 6y ago
+1 for Physics. It's not easy, but you'll be learning some very powerful tools for thought and modelling complex systems, so totally worth it. In case this is help, here is a short printable tutorial on mechanics fundamentals: ht
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by ivan_ah 6y ago
+1 for OBS. It's very easy to use (add different inputs and click record). External monitor is a must. A good (as in > $20) microphone is worth investing in to avoid annoying noises, in particular computer fan noise which is likely
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by ivan_ah 6y ago
Good luck with the LA book. It is a beautiful subject with so many applications, so a great opportunity to do an original take on it. In case this is might be helpful, here is a preview of the LA book I wrote[1] and the condensed four-page-
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by ivan_ah 6y ago
There was an excellent blog post recently on the inherence complexity of building software systems and how it boils down to understanding the problem, or "extracting requirements out of people" as you say: https://einar
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by ivan_ah 6y ago
You can easily get "invalid" circuits when using diodes (the standard assumption of 0.6V or 0.7V drop across didn't make sense). I once got one of those on a final exam and waster 40+ minutes trying to figure out why my solut
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by ivan_ah 6y ago
True that. After looking through the script in more details, I wouldn't recommend running without checking. I thought it was doing just basic ssh + firewall, but it does a lot more things, so probably better to run piecemeal even for n
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by ivan_ah 6y ago
Wow nice! This will be useful both for expert users who can go through and learn about various security options and apply manually, but also useful for non-expert users who can just run the script.
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by ivan_ah 6y ago
Some more info about columnar DBs here https://en.wikipedia.org/wiki/Column-oriented_DBMS for anyone not familiar with the idea.
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by ivan_ah 6y ago
> [...] let us know when it can be pre-ordered. Ah no, I'm very far from the "book draft" phase — I'm more at the "Hello world" stage ;) I've been scoping out the hands-on projects first (e.g. simulate
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by ivan_ah 6y ago
Thx. Very helpful TL;DR. I'm particularly excited about the "API access (coming soon)" part.
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by ivan_ah 6y ago
The best way to understand notion is as a relational database. You can build arbitrary collections (tables) of "cards" and choose structured properties (columns) on them. The "body" of the card itself is a standard markd

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