code logs -> 2020 -> Thu, 01 Oct 2020< code.20200930.log - code.20201002.log >
--- Log opened Thu Oct 01 00:00:50 2020
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00:52
<@sshine>
heh
00:53
<@sshine>
https://arxiv.org/pdf/1911.03449.pdf
00:53
<@sshine>
"... to obtain a amortized running time of O(α(q,n)) where α is the inverse-Ackermann function."
00:55
<@sshine>
I think the slowest growing function I've saw during algorithms lectures was O(floor(log(log(n)))
00:56
<@sshine>
so, uh, O(floor(log^2(n)))?
00:57
<@sshine>
now, this article proves a way to do dynamic planarity testing for O(log^3(n)) time per edge insert/delete.
00:58
<@sshine>
the inverse-Ackermann function grows slower than that but only works if you only ever insert and never delete, so only part-dynamic planarity testing.
01:33
<~Vornicus>
that is some bonkers as fuck running time
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02:46 * McMartin looks odd, clicks
02:47
<&McMartin>
That said, I definitely had one inverse-ackermann-scale function in my stock algo class
02:47
<&McMartin>
And that was on CLR even before it got another letter, so, The Standard Text
02:47
<&McMartin>
It was for an implementation of union-find on sets
02:48
<&McMartin>
This paper wasn't that so I am pleased to see something else at that scale
02:49
<&McMartin>
Though maybe it ends up just being An Application of Union-Find
02:55
<~Vornicus>
man my algorithms knowledge is pretty slapdash. I should properly learn some of that stuff
02:57
<&McMartin>
This is the book CS170 used: https://en.wikipedia.org/wiki/Introduction_to_Algorithms
02:57
<&McMartin>
It is a MIGHTY TOME and has far more than a year's worth of instruction in it.
02:57
<~Vornicus>
that's a couple names I know
02:58
<~Vornicus>
I've also got knuth sitting on my shelf but I use that almost entierly for reference
02:58
<&McMartin>
Knuth is tbh not what you want for this kind of thing
02:58
<&McMartin>
Neither is this, though it is also a textbook I remember with great fondness: https://www.amazon.com/Introduction-Theory-Computation-Michael-Sipser/dp/113318779X
02:59
<&McMartin>
The other flaw with both of these are the OMG textbook prices
02:59
<&McMartin>
Spiser is a slim volume.
03:01
<~Vornicus>
sipser is marked at 500 pages for the paperback, which isn't *exactly* slim but okay
03:09
<&McMartin>
... huh
03:09
<&McMartin>
Now I have to dig out my copy
03:10
<&McMartin>
There is no frickin' way that thing is 500 pages
03:11
<&McMartin>
I had the first eddition
03:11
<&McMartin>
It still says that one is 400 pages but...
03:11
<&McMartin>
Yeah I need to dig mine out. I may have had some kind of abbreviated copy.
03:11
<&McMartin>
I'd have estimated it at much closer to 200.
03:13
<&McMartin>
... nope that checks out
03:13
<&McMartin>
That is 396 very, very, thin leaves of paper
03:13
<~Vornicus>
ha
03:14
<&McMartin>
The trade paperback that was on top of it was 475 pages long and, you know, not a hardback and it was over twice as thick
03:15
<&McMartin>
In other news I have found that semi-pop history of Japan I never got around to reading, yoinking the Hell out of that
03:16
<&McMartin>
(Covers Meiji Restoration through WWII and is jointly written by a British and a Japanese author, with an introduction full of "single-viewpoint histories of Japan are very bad", so it promises to be fun)
03:16
<~Vornicus>
for ItA, a hundo for 1300 pages hardcover sounds like a reaonsable deal
03:17
<~Vornicus>
oh, vash has been reading a lot of history of japan stuff of late
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03:46
<&ToxicFrog>
What book is that?
03:47
<&McMartin>
It is simply called "Japan: 1868-1945" by Benson and Matsumura
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08:30
<@gnolam>
NGhgnghgh
08:32
<&McMartin>
You have summarized my Wednesday workday
08:32
<&McMartin>
Despite feeling like I was spending the whole day flipping out and chasing my tail though, I managed to produce several hundred lines of code, so I don't even know
09:07
<@gnolam>
This day is not going to produce anything of value, because I have just had my entire schedule fucked.
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13:19
<@gnolam>
Welp. And into the VB code I go.
13:30
<@gnolam>
https://cdn.discordapp.com/attachments/396357588880588804/761200226656321536/20201001_141255_HDR_.jpg :P
13:31
< catalyst>
godspeed
13:31 * catalyst tearfully salutes
13:33
<~Vorntastic>
Sweet Baby Jesus, VB 5?
13:34
<@Tamber>
o7
13:43
<@ErikMesoy>
o7
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14:28
<@abudhabi>
o7
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16:06
<&[R]>
http://www.telusplanet.net/public/stonedan/source.txt <-- VB 5
16:07
<&[R]>
(It will crash on the first run)
16:20
<@abudhabi>
Only the first?
16:28
< Emmy>
That's quite a bit of VB
16:28
< Emmy>
hmmmmh whiskey
16:28
< Emmy>
i didn't know you enjoyed VB so much
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--- Log closed Fri Oct 02 00:00:52 2020
code logs -> 2020 -> Thu, 01 Oct 2020< code.20200930.log - code.20201002.log >

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