egg|nomz|egg changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer.
* egg|anbo|egg pokes UmbralRaptor with kozai
* UmbralRaptor collides with Sol,
<bofh> LOL
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<UmbralRaptor> ;choose Try to get useful RV information|visit the plateau of Leng
<kmath> UmbralRaptor: Try to get useful RV information
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<Iskierka> oh yey course using scipy/numpy/jupyter
<UmbralRaptor> Yay, \o/
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<kmath> <i2at7v> @rygorous @eggleroy https://t.co/BFvq297eBs
<egg|anbo|egg> !wpn bofh
* Qboid gives bofh an explicit base
<UmbralRaptor> grats?
<bofh> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a teledildonic ristretto
<UmbralRaptor> uhm
<egg|anbo|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a mercury hydra
<UmbralRaptor> !wpn egg|anbo|egg && bofh
* Qboid gives egg|anbo|egg && bofh a cat dæmon
* egg|anbo|egg pets ANBOcat
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<SnoopJeDi> huzzah for the scipy stack \o/
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<APlayer> Hi there!
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<UmbralRaptor> Ohai
<e_14159> SnoopJeDi: Imagine if py3.8 contained numpy by default...
<SnoopJeDi> e_14159, having any of the scipy stack in the stdlib would be pretty evil
<SnoopJeDi> but like, the neat kind of evil
<e_14159> The pretty kind? :P
<SnoopJeDi> e_14159, did you see that arxiv I posted in here about a white-box advesarial attack on Mozilla's DeepSpeech net?
<e_14159> I don't think I did
<SnoopJeDi> It's neato https://arxiv.org/abs/1801.01944
<e_14159> I'm quite distracted and busy (ICML deadline in 10d~4h)
<SnoopJeDi> Heh, relatable
<e_14159> Extremely interesting paper, thanks.
<e_14159> I'd slightly criticize their use of the L_inf norm, but it's an interesting attack from a not-quite expected direction.
<APlayer> But what sort of actual attack could this be?
<SnoopJeDi> I confess I've not done more than skim it, but the relative size of their δ is fairly shocking to me (as well as the fact that silence is a producible target)
<e_14159> APlayer: You mean in practice?
<APlayer> "Let's fool this Alexa device and play a tape that sounds like it orders a computer, while in reality, it orders a microwave!"
<SnoopJeDi> Or perhaps fool Messenger and its kin into not recording every gorram thing you say
<SnoopJeDi> (I mean, not *really*, but...)
<e_14159> Imagine an "AI program" (oh how I hate myself for saying that) listening to your communications for stuff somebody doesn't like. Instead, you change the signal such that it hears something else.
<APlayer> So, when Alexa orders a microwave and it arrives, you've got to file a lawsuit against Amazon and insist that you actually ordered a computer and were shipped the wrong item. Present them the Alexa recording as proof. Collect a free microwave with the computer you actually ordered.
<SnoopJeDi> The construction of the attack is not really specific to audio, mind
<SnoopJeDi> I've seen a paper or two on adversarial attacks on visual classifiers
<SnoopJeDi> Actually, this article on just that is what helped me get from "dafuq is a NN" to the precarious level of understanding I have now: https://codewords.recurse.com/issues/five/why-do-neural-networks-think-a-panda-is-a-vulture
<SnoopJeDi> It's a research topic moreso than a "look at this Very Useful Exploit" like you might see in e.g. the CVE database
<e_14159> SnoopJeDi: Well, it *did* start with visual classifiers
<SnoopJeDi> Makes sense
<e_14159> Although I did see the nice argument that, yes, NNs are vulnerable to such attacks. But so are linear classifiers.
<SnoopJeDi> The difference being that you're (on paper) more aware of your blind spots with very formal classification ,no?
<e_14159> Well, in principle, yes.
<e_14159> However, it's the same as with interpretable decision trees: They might be interpretable in theory. In practice, you get this: http://cfss.uchicago.edu/stat004_decision_trees_files/figure-html/titanic_tree_complicated-1.png
<APlayer> SneepJeDi: I very much appreciated this guy's videos on ANNs: https://www.youtube.com/playlist?list=PLZHQObOWTQDNU6R1_67000Dx_ZCJB-3pi
<APlayer> e_14159: I like how the title says "complicated"
<APlayer> Pretty much to the point, yes
<e_14159> And this is an extremely easy dataset (Titanic survivors)
<SnoopJeDi> e_14159, it's so weird/cool how data availability and splitting are such a big fraction of the problems to be addressed
<e_14159> And how, if you're wrong, you end up with what's supposed to be Wikipedia articles but look like "ASskda \ns91" :-)
<e_14159> APlayer: Check out https://colah.github.io/posts/2014-03-NN-Manifolds-Topology/ which I found quite nicely to explain how NNs roughly work.
<SnoopJeDi> ooh that looks very nice
<APlayer> Ugh, manifolds
<APlayer> Don't do this to me :P
<APlayer> Still the bermuda triangle of maths to me
<SnoopJeDi> !wpn -add:wpn Spivak
<Qboid> SnoopJeDi: Weapon added!
<SnoopJeDi> APlayer, if you can get your head around the idea that a flat piece of paper can be wound up into a cylinder, you already have a pretty good intuitive concept of manifolds :P
<e_14159> Anyway, I have to go to sleep.
<APlayer> SnoopJeDi: This seems to be one of the few cases where intuitive concepts are nowhere near enough for a semi-understanding of mathematical concepts
<SnoopJeDi> (and Spivak's book is seriously really good!)
<SnoopJeDi> APlayer, it seems that way but it's not
<SnoopJeDi> nn e_14159
<e_14159> "Pages to write before I sleep", or how did that song go again? :P
<SnoopJeDi> I just realized "nn" could be "night-night" OR "neural net"
<e_14159> I had assumed that to be intentional
<e_14159> But now, for actual sleep. Night!
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<UmbralRaptor> SnoopJeDi: recursive night-night? o_O
<SnoopJeDi> me_irl
<UmbralRaptor> Also convoluted because of how hard it is to get to sleep.
* UmbralRaptor opens up L&L vol 2, to see how they deal with E&M.
<UmbralRaptor> … why are they starting with relativity?
<egg|anbo|egg> UmbralRaptor: because that's much saner and easier?
<UmbralRaptor> uh
<SnoopJeDi> magnetism: funky relativity-electricity
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<UmbralRaptor> well, yes.
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* UmbralRaptor 🔪 OSX in the Preview rendering https://photos.app.goo.gl/yvk6hO3Pgp6P2owt1
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<UmbralRaptor> At least one of these can easily solve the other. https://twitter.com/Alex_Parker/status/958112009438056450
<kmath> <Alex_Parker> The lab is dark and full of lasers.
<egg|anbo|egg> UmbralRaptor: today in fun at ANBO: something that might be part of the damper fell into the fireplace
<UmbralRaptor> uh
<bofh> UM
<SnoopJeDi> bah, someone's already made the "...before I sleep" joke
<egg|anbo|egg> Sarbian: hm
<Sarbian> hm ?
<egg|anbo|egg> Sarbian: I'm in Normandy this week, considering spending a couple of days in Paris on the way back
<Sarbian> I work saturday but I am free otherwise
<egg|anbo|egg> I'll still be here with my cat saturday anyway
<Sarbian> I am not doing much outside of work currently so anytime you re around
<awang> !wpn -add:wpn triangle pusher
<Qboid> awang: Weapon added!
<awang> !wpn -add:wpn polygon pusher
<Qboid> awang: Weapon added!
<SnoopJeDi> what, no Boris pusher?
<awang> What's a Boris pusher?
<bofh> !won SnoopJeDi
<bofh> !wpn SnoopJeDi
* Qboid gives SnoopJeDi a flipped crystal
<bofh> typing is hard let's go shopping
<SnoopJeDi> awang, the typical choice for updating particle velocities/positions in plasma simulations
<SnoopJeDi> !wpn bofh
* Qboid gives bofh a promethium Moulton protractor
<awang> SnoopJeDi: This?
<awang> !wpn -add:wpn Boris pusher
<Qboid> awang: Weapon added!
<SnoopJeDi> yea
<awang> I see
<awang> ....That's waaayyyy over my head
<awang> :(
<awang> I wish I had enough time for a physics degree
<awang> And math degree
<egg|anbo|egg> awang: well, you dive into the Principia codebase, you'll end up learning *some* graduate mathematics by osmosis
<SnoopJeDi> it's true, Principia and infinite time is a set of sufficient conditions