ivan_ah

20 ms·

121.
Least squares as springs: physics intuition for regression(joshualoftus.com)
1 points by ivan_ah 6y ago|0 comments
122.
by ivan_ah 6y ago
Math images are not loading for me. Here is an archive.org link where the images are loading correctly: https://web.archive.org/web/20200305180920/https://math.vand...
123.
by ivan_ah 6y ago
There is another project called JUMP math which has shown some great results, and is now getting adopted widely in Canada. Essentially the approach is to present concepts as bite-sized chunks (more scaffolded) and make students gradually wo
124.
by ivan_ah 6y ago
I have two books you might be interested in (written by me). If you want to review math fundamentals (high school math), the No Bullshit Guide to Mathematics will be good for you—condensed material for adult learners. Preview: https:/
125.
by ivan_ah 6y ago
> "I've killed more trees writing out the work for these problems than anyone should reasonably have to." Lol... so true. Some procedures take forever. Like finding the eigenvectors of a 3x3 matrix, for example. First the
126.
by ivan_ah 6y ago
This is pretty good. Found some "Nullable but not blank=True" errors which were hidden because using mostly as an API, but would have had to fix to use the Django admin or forms. Also suggested reordering of methods within the cla
127.
by ivan_ah 6y ago
Heh he eh, totally with you. The following kind of snippets appear a lot in my command line history (for music): youtube-dl -x --audio-format mp3 <mediaurl>
128.
by ivan_ah 6y ago
> It's not hard to know what a derivative and integral is. There is mathematical depth to being able to do something interesting with that. That's a very good point. In some sense learning of the material at level N, is only d
129.
by ivan_ah 6y ago
> If a software engineer enters industry without knowing linear algebra, odds are they'll never be a data engineer in a serious ML project, or even more so, work on serious ML themselves. Linear algebra is a lot to learn[1], but I
130.
by ivan_ah 6y ago
I highly recommend you look into SymPy, which offers symbolic math computations on top of standard Python programming capabilities. I checks all the boxes except for speed—since it is Python after all... What makes SymPy great for learning
131.
by ivan_ah 6y ago
Same question, but with minikube.
132.
by ivan_ah 6y ago
Mostly reviews of text edits on the books. I'll make some changes for a while, then add them to git, and review the changes `git diff --color-words --cached` before I commit. Both MATH&PHYS and LA books are about to get a point-rel
133.
by ivan_ah 6y ago
Oh cool. I just learned a new git verb today! (Previously I always used `git diff <commit-1> <commit>` but `git show <commit>` is much simpler.
134.
by ivan_ah 6y ago
An excellent tool that can be used in conjunction with this approach is the word-level diff option for git diffs: `git diff --color-words` Rather than processing entire lines (useful for code), it shows individual word changes, so it's
135.
by ivan_ah 6y ago
While on the topic of ODEs, I want to mention a really powerful ODE-solving system called Modelica. There was an excellent introductory article posted on HN earlier this summer: https://marcobonvini.com/modelica/2020&#x
136.
by ivan_ah 6y ago
sci-map sounds very interesting. Have you looked at metacademy.org before? They did a lot of good work on the data model (concepts, resources, learning pathways, etc), and also collected a lot of content, mostly on computer topics. https:
137.
by ivan_ah 6y ago
This is great. I didn't see a way to save the diagram "source" which would enable the user journey: edit-edit and save partial progress today, then load and continue editing tomorrow. Still even without save this is already v
138.
by ivan_ah 6y ago
this fork has a working py3 version https://github.com/mvaled/hask
139.
by ivan_ah 6y ago
I'm +1 about the use of Python, but I'd say ONLY when complexity gets higher than simply calling commands (e.g. cat/sed/etc). For basic commands, I'd say Makefile is the way to go, or scripts in a package.json. I fi
140.
by ivan_ah 6y ago
Yeah licensing sounds like heavily enforced CC BY-ND
141.
by ivan_ah 6y ago
Speaking of accessibility for math equations, there is some really good work done in MathJax 3: http://docs.mathjax.org/en/latest/basic/a11y-extensions.html... slides from presentation: https://mat
142.
by ivan_ah 6y ago
In case this helps, here is a mapping from Unicode ligature-->ascii for all the ligatures I know of (the ones supported by LaTeX fonts): https://github.com/ivanistheone/arXivLDA/blob/master/preproc...
143.
by ivan_ah 6y ago
The linked instructions cover PDF/A-1b (have plain text version of contents), but Tagged PDF is more than that -- it's about encoding the structure of the document. There is a POC package for producing Tagged PDF here https:&#x2F
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by ivan_ah 6y ago
Yes for a live call that would probably be the easiest. The USB camera use case is to send "table top" video input into OBS, mix with other sources, and record the lesson for offline async viewing (flipped classroom).
145.
by ivan_ah 6y ago
Another option (although requires more tech) is to use the camera from a mobile phone connected to the computer via USB. Requires app + USB cable + "drivers" installed on the host computer. My teacher friend recommended DroidCamX
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by ivan_ah 6y ago
Here is a video https://www.youtube.com/watch?v=tX4H_ctggYo and the associated HN thread https://news.ycombinator.com/item?id=22282452 that provide some more background on GA and its applications. I think y
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by ivan_ah 6y ago
The examples under the help menu, (?) icon, are pretty good: https://geometryexpressions.com/gxweb/help/ ... at least the ones I looked at in the Some Geometry Theorems category now. Very cool. Maybe I'll fin
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by ivan_ah 6y ago
For anyone interested in QM foundations, last year the IQOQI Vienna had a very interesting lecture series on Scientific Realism that many living philosophers and scientists to discuss the matter. Very interesting exposition + lots of differ
149.
by ivan_ah 6y ago
Focussing on synaptic connections seems rather simplistic. For full "emulation" they would probably need to emulate the electric fields and neurotransmitter concentrations, otherwise just-the-spikes simulation will probably captur
150.
by ivan_ah 6y ago
масив? I had a similar experience wondering what this thing is when I first heard this. I wonder what the etymology is. Python dicts seem to be „асоциативен масив“ but „речник“ is also acceptable, so at least that's understandable.

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