UmbralRaptor 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> … one of the other grad students just compared me to nomal O_o | <ferram4> I shall beat my problems to death with an engineer.
<UmbralRaptor> egg|zzz|egg: Galaxies!
<egg|zzz|egg> UmbralRaptor: galaxies \o/
<egg|zzz|egg> UmbralRaptor: well, they're the same galaxy :-p
<soundnfury> hmmm. Should I skip sleep tonight and wrap my circadian rhythm?
* UmbralRaptor hands soundnfury a ☕
<soundnfury> !u ☕
<Qboid> U+2615 HOT BEVERAGE (☕)
<soundnfury> yikes! I'm being mugged!
<soundnfury> either that, or it's Java, which is even worse :P
<UmbralRaptor> Reminder that TOPCAT uses Java.
* egg|zzz|egg puts filter, stares through eyepiece
<egg|zzz|egg> UmbralRaptor: I guess we're making a release in 2 weeks
* egg|zzz|egg has no idea what's going to be in that release
<egg|zzz|egg> haven't done much since the previous one :-p
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<egg|zzz|egg> oh, phl added JD/MJD literals
<UmbralRaptor> Changes: Better dating
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<egg|zzz|egg> UmbralRaptor: hah
<soundnfury> xD
<egg|zzz|egg> UmbralRaptor: anything to stare at in particular on the moon?
<egg|zzz|egg> admittedly it's a bit dull when it's full, no terminator to highlight the topography...
<egg|zzz|egg> meanwhile tuco is sleeping
<soundnfury> egg|zzz|egg: I need your crater, your clothes and your mohtəcycle
<egg|zzz|egg> moo
<UmbralRaptor> Full moons are rather too dull =\
<soundnfury> On the other hand, +1 Luck in NetHack ;)
<UmbralRaptor> Spring tides!
<egg|zzz|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a scandium table
<egg|zzz|egg> UmbralRaptor: that's a weird terminology
<egg|zzz|egg> UmbralRaptor: in french they're called "marées de vive eau" (vs. "marées de morte eau"), tides of lively water (vs. of dead water)
<soundnfury> !wpn -add:adj neap
<Qboid> soundnfury: Adjective added!
<soundnfury> !wpn egg|zzz|egg
* Qboid gives egg|zzz|egg a calcium snake
<UmbralRaptor> !wpn -add:adj spring
<Qboid> UmbralRaptor: Adjective added!
<UmbralRaptor> !wpn -add:adj summer
<Qboid> UmbralRaptor: Adjective added!
<UmbralRaptor> !wpn -add:adj fall
<Qboid> UmbralRaptor: Adjective added!
<UmbralRaptor> !wpn -add:adj autumn
<Qboid> UmbralRaptor: Adjective added!
<UmbralRaptor> !wpn -add:adj winter
<Qboid> UmbralRaptor: Adjective added!
<UmbralRaptor> English is a silly language. >_>
<soundnfury> UmbralRaptor: yeah, but American's sillier. I mean, "fall"? :P
<soundnfury> !wpn -add:wpn soliton
<Qboid> soundnfury: Weapon added!
<soundnfury> !wpn -add:adj Peregrine
<Qboid> soundnfury: Adjective added!
<UmbralRaptor> !wpn -stats
<Qboid> UmbralRaptor: Total weapons: 555. Total adjectives: 719. Total possible combinations: 638120840955.
<soundnfury> !wpn -add:adj statistical
<Qboid> soundnfury: Adjective added!
<soundnfury> !wpn -add:wpn statistic
<Qboid> soundnfury: Weapon added!
<soundnfury> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a positive denormal
<UmbralRaptor> !wpn -add:adj frequentist
<Qboid> UmbralRaptor: Adjective already added!
<soundnfury> ooh, an actual thing!
<UmbralRaptor> !wpn -add:adj Bayesian
<Qboid> UmbralRaptor: Adjective already added!
<UmbralRaptor> !wpn soundnfury
* Qboid gives soundnfury a ytterbium Principia
<soundnfury> !wpn -add:adj baize
<Qboid> soundnfury: Adjective added!
<egg|zzz|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a mass-driver prepromorphism/Hamiltonian hybrid
<UmbralRaptor> !wpn egg|zzz|egg
* Qboid gives egg|zzz|egg a Lovecraftian ☣
<UmbralRaptor> !u ☣
<Qboid> U+2623 BIOHAZARD SIGN (☣)
<UmbralRaptor> Yeah, that works.
<UmbralRaptor> ?
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<UmbralRaptor> .hat
<SnoopJeDi> ô
<UmbralRaptor> os
<soundnfury> maybe this was a mistake. I'm so going to fall asleep at my desk at some point today :/
<UmbralRaptor> soundnfury: coffee?
<UmbralRaptor> call it a day?
<soundnfury> UmbralRaptor: I don't drink coffee.
<soundnfury> I did just have a square of high-density polychocolatene
<soundnfury> hopefully that will help
* UmbralRaptor isn't sure what that is. Has Derek Lowe blogged about it?
<soundnfury> UmbralRaptor: I don't think so. Though it does involve percentages which, if they were peroxide concentrations, would be cause for alarm.
<soundnfury> ooh, sun's up
<soundnfury> (and very orange)
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<kmath> <michael_nielsen> From a review of geometric algebra: https://t.co/Ntwy9AALqy
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<egg> !wpn Iskierka
* Qboid gives Iskierka a Grothendieck thyratron
<egg> !wpn Ellied
* Qboid gives Ellied a life
<egg> !wpn whitequark
* Qboid gives whitequark a ?/Hamiltonian hybrid
<egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a bit-addressable Bolzano-Weierstraß cocycle/squirrel hybrid
<egg> !wpn bofh
* Qboid gives bofh a statistical frangible triangle with a slug attachment
<egg> !u CP
<Qboid> U+0043 LATIN CAPITAL LETTER C (C)
<Qboid> U+0050 LATIN CAPITAL LETTER P (P)
<soundnfury> !wpn egg
* Qboid gives egg a polonium scale
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* egg|work|egg pokes Technicalfool with a stick
<Technicalfool> eek?
<egg|work|egg> Technicalfool: I think there's a post on the principia thread waiting for mod approval
<egg|work|egg> !wpn
* Qboid gives egg|work|egg a pulsed scale
<egg|work|egg> !wpn Technicalfool
* Qboid gives Technicalfool a pyramid
<Technicalfool> heh
<Technicalfool> just peeking
<Technicalfool> oh man, so many posts
<Technicalfool> there we go. Pleroy's post approved :P
<egg|work|egg> thanks :-)
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<kmath> <michael_nielsen> From a review of geometric algebra: https://t.co/Ntwy9AALqy
<UmbralRaptor> !wpn egg|work|egg
* Qboid gives egg|work|egg a Newtonian array
<egg|work|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a just-in-time javelin
<SnoopJeDi> an LLVM of Longinus?
Thomas|AWAY is now known as Thomas
<egg|work|egg> !wpn TheKosmonaut
* Qboid gives TheKosmonaut a trigonometric thagomizer
<egg|work|egg> !wpn Thomas
* Qboid gives Thomas a Norman prime
<egg|work|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a polynomial transformer which strongly resembles a bot
* UmbralRaptor gives Qboid a quadratic equation.
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<egg|afk|egg> !wpn regex
* Qboid gives regex an abstract Bucket O' Nitrogens™
<regex> Oooooh, I like that one.
<kmath> YouTube - history of the entire world, i guess
<egg|afk|egg> !wpn i
* Qboid gives i a Lambert platypus
<egg|afk|egg> !wpn Iskierka
* Qboid gives Iskierka a fuse
<egg|afk|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a reactive cardinal
<SnoopJeDi> so it turns out that at least locally, the FCI assessment is not hard enough to actually assess "advanced" students
<SnoopJeDi> I predict this is a conclusion that will go over in the established literature about as well as a fart in church
<kmath> <hikari_no_yume> ~@0xabad1dea what's the CVE
<UmbralRaptor> SnoopJeDi: FCI?
<egg|afk|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a charm birb
<SnoopJeDi> "force concepts inventory," it's the gold standard for Physics I conceptual assessment in the physics education research (PER) field
<UmbralRaptor> hrm
<SnoopJeDi> for...a long time.
<UmbralRaptor> What counts as advanced?
<SnoopJeDi> Developed in 1985, and I think I might've taken it in my PER-savvy course
<SnoopJeDi> UmbralRaptor, if you plot the question difficulty against the fraction correct, there's a noticeable bump in the "hardest" questions. It's basically a bimodal distribution and the second clump is "advanced"
<SnoopJeDi> (the work we saw today actually splits the population into "at risk", "novice" and "advanced")
<SnoopJeDi> The prof was pretty actively trying to recruit me and a grad student I sat next to, but I don't think it'd happen unless I could get fractional support out of it
<egg|afk|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a radioactive pogonip
<egg|afk|egg> !cat UmbralRaptor
* UmbralRaptor meows at egg|afk|egg
<UmbralRaptor> SnoopJeDi: er, as in I don't know what questions count as hard, etc. And correct answer rates.
<egg|afk|egg> UmbralRaptor: meow
* egg|afk|egg hasn't seen any cats today
<egg|afk|egg> UmbralRaptor: live diapsids https://www.youtube.com/watch?v=X8YRJKTuIOc
<kmath> YouTube - Bella Hummingbird Live Stream
<SnoopJeDi> UmbralRaptor, it's uh, squishy.
<SnoopJeDi> the main model under the hood is this one: https://en.wikipedia.org/wiki/Rasch_model
<SnoopJeDi> you have a parameter θ that captures personal knowledge/ability, and a parameter β that captures the difficulty of a question, and the probability p that you answer correctly is expressed as p/(1-p) = exp(θ)/exp(β)
<SnoopJeDi> which leads to a happy logit expression: log(p/(1-p)) = θ-β (which means you can plot probability on one axis, and the combined contribution of θ, β on another)
<SnoopJeDi> everything gets subscripts for each question, but you can put some pretty formal dressing on the process
<egg|afk|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a supersaturated variety
Thomas is now known as Thomas|AWAY
<egg|afk|egg> !wpn UmbralRaptor
* Qboid gives UmbralRaptor a plutonium semimetal
<SnoopJeDi> !wpn egg|afk|egg
* Qboid gives egg|afk|egg a continuous LED with a ? attachment
<egg|afk|egg> UmbralRaptor: it's halfway between Helium and the rest of the periodic table? >_>
egg|afk|egg is now known as egg
* egg writes unit tests
<egg> !seen nomal
<Qboid> egg: I haven't seen the user nomal yet.
<egg> !seen nomal*
<Qboid> egg: I last saw NomalRaptor on [05.05.2017 16:31:30] in #kspacademia saying: "≡ 0"
<SnoopJeDi> egg, do you happen to know of any English-language biographies of Galois?
* egg stares at the sign of NaNs
<SnoopJeDi> strange question I'm sure, since you'd just read it in the French I assume :P
<egg> I don't think I've actually read a biography of him
<SnoopJeDi> He's always been one of those historical figures I'd like to learn a bit more about
<SnoopJeDi> In no small part due to how romantic a figure he is, particularly posthumously
<egg> the wikipedia page has quite a bit of detail already, have you poked at its references?
<SnoopJeDi> A bit, I just figured I'd ask
<SnoopJeDi> Wikipedia is very well and good for quick broad-strokes information but I've never been fond of biographical content there
<SnoopJeDi> to properly contextualize anything you have to click through to so many other things :/
* egg pokes a NaN in the sign bit
<SnoopJeDi> ...huh. Apparently Alexandre Astruc (who appears to have authored one of the definitive French biographies), wrote and directed a short film about Galois
<SnoopJeDi> https://www.youtube.com/watch?v=BAmhQle-uvA appears to be the full thing
<kmath> YouTube - Évariste Galois (Alexandre Astruc 1965)
<egg> whitequark: https://twitter.com/whitequark/status/862759725426933766 << I misread the first one as blocking some nitrogen compound somehow
<kmath> <whitequark> small brain: blocking HN via /etc/hosts large brain: blocking twitter expanding brain: blocking wikipedia cosmic brain: blocking pubmed․com
<egg> !wpn whitequark
* Qboid gives whitequark a graded adjective
<egg> UmbralRaptor: the "in the era of JWST" stuff sounds like DF book titles
<UmbralRaptor> ^_^
<egg> UmbralRaptor: have you tried galfitting a cat
<egg> UmbralRaptor: have you tried galfitting Ellied
<UmbralRaptor> I think we'd need a multicomponent fit.
<kmath> <Alex_Parker> I'm on a meeting agenda to discuss strategies for wobble mitigation. I am a wobble mitigator. #ThisIsWhyIGotMyPhD
* UmbralRaptor hasn't touched galfit in something like 9 months =\
* egg pets UmbralRaptor with a galaxy
<egg> !wa +7.47989353500000000e+10 m in au
<Qboid> egg: convert +(7.4798935350000000×10^10) meters to astronomical units: 0.5 au (astronomical units)
<egg> !wa 0.75 / (1+.5)
<Qboid> egg: 0.75/(1 + 0.5) = 0.5
<egg> !wa 0.75 / (1-.5)
<Qboid> egg: 0.75/(1 - 0.5) = 1.5
<egg> UmbralRaptor: we have JD literals in principia now
<egg> UmbralRaptor: but for reasons that are unlikely to become clear again they only work on dates after 1583 :-p
<egg> (because the logic converts the julian date to a gregorian one before converting that to our count of seconds from J2000)
<egg> (which is a bit silly)
<egg> !wa +1.12198403025000000e+11 m in au
<Qboid> egg: convert +(1.1219840302500000×10^11) meters to astronomical units: 0.75 au (astronomical units)
<egg> UmbralRaptor: so, I'm testing this keplerian elements (disregarding questions of condition for now)
<egg> UmbralRaptor: there are 15 branches to test or so, and every branch needs a 50-line test
<egg> aaaaaaa
<egg> ;rpn 15 50 *
<kmath> egg: 750.0
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<egg> I am finding bugs though, so at least that's encouraging
<UmbralRaptor> Bleah, don't want to grade.
<bofh> UmbralRaptor: same
<UmbralRaptor> … though these are all makeup labs, so I could just give the students 8/10
<UmbralRaptor> Oh, hey. Tornado warning.
<SnoopJeDi> Stay safe!
<UmbralRaptor> Therefore every js function is a parser? https://twitter.com/DRMacIver/status/862642573852258304
<kmath> <DRMacIver> PSA: If a function accepts a string then it's a parser. Parsers are hard to get right and dangerous to get wrong. Write fewer of them.
<egg> UmbralRaptor: retreat into the amphiteater of starwatch of oxen?
<egg> UmbralRaptor: ... makeup labs?
<UmbralRaptor> egg: but are there clowns in the amphitheater?
<egg> nah
<egg> I haven't mined anything of value
<egg> just gold
<egg> I don't know what to do with all that gold
<UmbralRaptor> egg: students missed some classes, but showed up at the extra one.
<egg> well the tables in the amphitheater are gold
<UmbralRaptor> So, more lab to grade
<whitequark> "I haven't mined anything of value, just bitcoin"
<whitequark> is what I was expecting to read
<egg> UmbralRaptor: nothing about wearing makeup?
<egg> whitequark: I'm not sure how I'd get my dwarves to mine that
<UmbralRaptor> egg: Afraid that none of my labs involve Ellied.
<egg> but I'm pretty sure I can't smelt it into something with which to stab goblins
<egg> UmbralRaptor: you should bring her to a lab
<egg> UmbralRaptor: and galfit her
<kmath> <ObservatoryCats> "Dear Dr. Samarasinha, your software will not enhance images of @ceilingcats. Please advise." https://t.co/Rp5C50y83Q
<UmbralRaptor> That sounds vaguely lewd.
* egg stares at the codepaths
<egg> ... also I'm going to have to test that for ellipse + hyperbola
<egg> (for now I'm not looking for the issues of horrible condition, just coverage)
<egg> UmbralRaptor: also re. the parser thing, principia has constexpr date parsers \o/
<egg> (that convert UT1 to TT at compile time)
<egg> \o/
<UmbralRaptor> yay?
<egg> and now they can take JD!
<egg> UmbralRaptor: do people use UT1 JDs?
<UmbralRaptor> uh
<UmbralRaptor> I think so.
<egg> well we support that :D
<UmbralRaptor> UT1 JD == BJD, right?
<egg> we don't support UTC JD because it required doing *something* stupid
* egg googles BJD and gets results about dolls
<UmbralRaptor> Spinning up Earth?
<UmbralRaptor> egg: those dolls are confusing.
<egg> UmbralRaptor: see the "which poses problems" link https://github.com/mockingbirdnest/Principia/pull/1362#discussion_r115146401
<Qboid> [#1362] title: Parsing of MJD and JD literals | | https://github.com/mockingbirdnest/Principia/issues/1362
<egg> ERFA?
<Qboid> egg: [ERFA] => Essential Routines for Fundamental Astronomy
<egg> SOFA?
<Qboid> egg: [SOFA] => Standards Of Fundamental Astronomy
<egg> UmbralRaptor: ERFA (and SOFA) smear the leap second over the UTC day preceding it
<egg> UmbralRaptor: nah, the BJD/JD thing has nothing to do with UT1/TT
<egg> UmbralRaptor: JD(UT1) is just JD used to express UT1, which is an angle (pretending to be a date)
<UmbralRaptor> Aren't all pre-TAI dates actually angles? >_>
<egg> well yes, but TT, TAI, UT1 are well-defined things
<egg> TT is actually (a scaling of) time
<egg> TAI is a measurement thereof
<egg> UT1 is actually an angle
<egg> (TT is a scaling of TCG, which is time)
<egg> TDB is a scaling of TDB which is chosen to look like TT
<UmbralRaptor> hrm
<egg> uh
<egg> s/TDB wh/TCB wh/
<Qboid> egg meant to say: TDB is a scaling of TCB which is chosen to look like TT
<egg> UmbralRaptor: and modern UTC runs parallel to TAI with leaps to stay close to UT1 \o/
<egg> old UTC otoh changed rate wrt TAI, as well as having leaps
<UmbralRaptor> uh
<egg> UmbralRaptor: the astropy documentation also has this diagram (but astropy does not know about historical UTC, not to mention the history and redefinitions of the various timescales) https://astropy.readthedocs.io/en/v0.3/_images/time_scale_conversion.png
<egg> UmbralRaptor: for instance TT used to be its own time (time at the geoid) whereas now it's scaled geocentric time (in a sense we defined the geoid)
<egg> UmbralRaptor: this diagram clarifies things with general relativity, http://rsta.royalsocietypublishing.org/content/roypta/369/1953/4131/F1.large.jpg
<UmbralRaptor> heh
<SnoopJeDi> Ah yes, it's all quite clear now
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egg is now known as egg|zzz|eggg
egg|zzz|eggg is now known as egg|zzz|egg
<bofh> egg|zzz|egg: "simple"
<egg|zzz|egg> bofh: :D