TomyLobo2

Activity Graph

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2019-06-04

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2019-05-28

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2019-05-20

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2019-05-08

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2019-05-05

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2019-03-17

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2018-07-17

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2018-06-11

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2018-06-10

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2018-06-09

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2018-04-09

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2018-02-04

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2018-01-15

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2018-01-01

[00:53:21] TomyLobo2: apeiros, i made it print whenever it has an improved solution. it now has 2 more segments to optimize and it already has a pretty decent solution. last time it updated was 5 minutes ago. i think this'll run through in a couple of hours :)
[00:53:32] TomyLobo2: down from 11 years, that's an improvement
[00:53:51] TomyLobo2: i can probably still improve it with some dynamic programming
[00:56:02] TomyLobo2: the only optimization i have right now is that it aborts whenever the (current path length)+(remaining targets)*(shortest possible segment length) exceeds the current shortest path length. shaves off a couple of dead ends
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2017-12-31

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[18:38:23] TomyLobo2: i need to solve the travelling salesman problem for a set of about 20 entries
[18:38:40] TomyLobo2: i could bruteforce it, but maybe there's a gem for that? :)
[19:13:14] TomyLobo2: that thing's page was redirecting to all kinds of advertisement so i didnt look into it
[19:15:53] TomyLobo2: havenwood, but doesn't this approximate?
[19:17:08] TomyLobo2: it's only 17 entries
[19:17:39] TomyLobo2: only 128k possibilities...
[19:18:00] TomyLobo2: that's probably spherical though
[19:18:28] TomyLobo2: and probably even takes roads into account
[19:19:40] TomyLobo2: it's not sales
[19:19:55] TomyLobo2: it's planning a construction ship's route in stellaris
[19:21:13] TomyLobo2: i made a savegame parser, i'm picking it apart to find all the planets missing research/mining stations, now i want to find the optimal route between them
[19:21:52] TomyLobo2: assuming direct jumps, for starters :)
[19:22:28] TomyLobo2: havenwood, what'S MAtrix?
[19:22:32] TomyLobo2: the google thing?
[19:25:53] TomyLobo2: yeah i just have to make sure i dont have all permutations in memory at any point ^^
[19:26:45] TomyLobo2: i need a parallel_min_by ^^
[19:28:00] TomyLobo2: maybe i should use backtracking instead of being lazy and using Array#permutation
[19:42:30] TomyLobo2: i'm basically looking for the shortest hamiltonian path on the graph
[21:12:53] TomyLobo2: it's still not done
[21:13:03] TomyLobo2: come on, it's just 17! permutations
[21:14:04] TomyLobo2: 355 687 428 096 000
[21:14:14] TomyLobo2: 355 trillion.... that takes a while
[22:02:28] TomyLobo2: well not anymore
[22:02:49] TomyLobo2: i'm switching to branch&bound, which should be 2^17 instead :)
[22:03:41] TomyLobo2: ...according to wikipedia
[22:04:25] TomyLobo2: do you have any idea how big the difference between 2^n and n! is?
[22:05:08] TomyLobo2: from 355 trillion to 131072
[22:06:28] TomyLobo2: i thought you said it's barely noticably faster
[22:07:07] TomyLobo2: change in gait, coughing, grey hair
[22:20:19] TomyLobo2: looks like that would get more replies in a channel about whatever that "homebrew formula" thing is

2017-12-30

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2017-12-26

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2017-12-24

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2017-12-08

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2017-12-07

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2017-12-03

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[09:59:09] TomyLobo2: I wanna generate spreadsheet column names (A..Z, then AA and so on). Apparently 'A'..'ZZZZ' is adequate for that. Now, how do I pluck an item from the middle of that?
[09:59:42] TomyLobo2: i mean without generating the entire thing until that point
[09:59:59] TomyLobo2: >> ('A'..'ZZZZ').first(27).last

2017-12-02

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[22:29:44] TomyLobo2: lisita, why not make a bunch of shell aliases?
[22:30:07] TomyLobo2: instead of the ruby script, i mean

2017-10-17

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2017-10-16

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2017-10-15

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2017-10-13

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2017-10-12

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2017-10-11

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2017-09-27

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2017-08-06

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2017-07-30

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2017-07-29

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2017-07-28

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2017-07-27

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2017-07-26

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2017-07-25

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2017-07-24

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2017-07-23

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2017-07-22

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2017-07-21

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2017-07-20

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2017-07-19

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2017-07-09

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2017-07-08

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2017-07-07

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2017-07-06

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2017-07-05

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2017-06-25

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2017-06-19

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2017-06-15

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2017-06-14

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2017-06-11

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2017-06-10

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2017-06-05

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2017-05-29

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2017-05-28

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2017-05-15

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2017-05-10

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2017-05-05

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2017-05-03

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2017-04-28

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2017-04-19

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2017-04-17

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2017-04-16

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2017-04-13

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2017-04-03

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2017-04-02

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2017-03-31

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2017-03-30

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2017-03-29

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2017-03-28

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2017-03-27

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2017-03-26

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2017-03-24

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2017-03-23

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2017-03-22

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2017-03-21

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2017-03-20

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2017-03-19

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2017-03-17

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2017-03-16

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2017-03-15

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2017-03-14

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2016-02-02

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2016-02-01

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2016-01-29

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