mlpack IRC logs, 2018-04-05

Logs for the day 2018-04-05 (starts at 0:00 UTC) are shown below.

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--- Log opened Thu Apr 05 00:00:23 2018
00:17 -!- hlu_ [4a58464f@gateway/web/freenode/ip.74.88.70.79] has joined #mlpack
00:18 < hlu_> got an assertion failure "Assertion `splitCol > begin' failed." @ core/tree/binary_space_tree/binary_space_tree_impl.hpp:848 What does it mean? What do I need to check?
00:18 < hlu_> Thanks
00:20 < hlu_> I am using a custom distance metric to do nearest neighbor search: mlpack::neighbor::NeighborSearch<mlpack::neighbor::NearestNeighborSort, LineDistance<2>, arma::mat, mlpack::tree::BallTree > indexer(segments);
00:21 < hlu_> The assertion failure happens at constructor.
00:32 < rcurtin> hlu_: do any of the dimensions of your data have only NaNs or 0s or some other single value?
00:32 < rcurtin> also I wonder if maybe LineDistance<2> might be the issue
00:51 -!- naywhayare [~ryan@knife.lugatgt.org] has joined #mlpack
00:51 -!- Topic for #mlpack: http://www.mlpack.org/ -- We don't respond instantly... but we will respond. Give it a few minutes. Or hours. -- Channel logs: http://www.mlpack.org/irc/
00:51 -!- Topic set by naywhayare [~ryan@spoon.lugatgt.org] [Wed May 21 16:24:10 2014]
00:51 [Users #mlpack]
00:51 [ anirudhm ] [ gtank ] [ K4k ] [ naywhayare] [ prakhar_code[m]] [ zoq]
00:51 [ caladrius[m]] [ hlu_ ] [ killer_bee[m]] [ nikhilweee] [ vivekp ]
00:51 [ dk97[m] ] [ jenkins-mlpack] [ lozhnikov ] [ petris ] [ wiking ]
00:51 -!- Irssi: #mlpack: Total of 16 nicks [0 ops, 0 halfops, 0 voices, 16 normal]
00:51 -!- Channel #mlpack created Tue Oct 11 18:35:40 2011
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00:51 -!- Home page for #mlpack: http://www.mlpack.org
00:52 < naywhayare> hmm, I lost connection for about the last 5-10 minutes, so if any messages were sent I (and the logs) missed them
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00:56 -!- Topic for #mlpack: http://www.mlpack.org/ -- We don't respond instantly... but we will respond. Give it a few minutes. Or hours. -- Channel logs: http://www.mlpack.org/irc/
00:56 -!- Topic set by naywhayare [~ryan@spoon.lugatgt.org] [Wed May 21 16:24:10 2014]
00:56 [Users #mlpack]
00:56 [ anirudhm ] [ gtank ] [ K4k ] [ naywhayare] [ prakhar_code[m]] [ wiking]
00:56 [ caladrius[m]] [ hlu_ ] [ killer_bee[m]] [ nikhilweee] [ rcurtin ] [ zoq ]
00:56 [ dk97[m] ] [ jenkins-mlpack] [ lozhnikov ] [ petris ] [ vivekp ]
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00:56 -!- Channel #mlpack created Tue Oct 11 18:35:40 2011
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00:57 < naywhayare> wait, what? now I am really confused, how am I in this channel twice?
00:58 < naywhayare> wait, what? now I am really confused, how am I in this channel twice?
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00:59 -!- rcurtin [~ryan@knife.lugatgt.org] has joined #mlpack
00:59 -!- Topic for #mlpack: http://www.mlpack.org/ -- We don't respond instantly... but we will respond. Give it a few minutes. Or hours. -- Channel logs: http://www.mlpack.org/irc/
00:59 -!- Topic set by naywhayare [~ryan@spoon.lugatgt.org] [Wed May 21 16:24:10 2014]
00:59 [Users #mlpack]
00:59 [ anirudhm ] [ gtank ] [ K4k ] [ nikhilweee ] [ rcurtin] [ zoq]
00:59 [ caladrius[m]] [ hlu_ ] [ killer_bee[m]] [ petris ] [ vivekp ]
00:59 [ dk97[m] ] [ jenkins-mlpack] [ lozhnikov ] [ prakhar_code[m]] [ wiking ]
00:59 -!- Irssi: #mlpack: Total of 16 nicks [0 ops, 0 halfops, 0 voices, 16 normal]
00:59 -!- Channel #mlpack created Tue Oct 11 18:35:40 2011
00:59 -!- Home page for #mlpack: http://www.mlpack.org
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00:59 < rcurtin> ok... that was strange ...
01:02 < hlu_> thanks rcurtin, I found the problem with my distance function. now there is no error.
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01:11 < rcurtin> great to hear you got it figured out :)
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04:19 < s1998> Zoq: i will make the necessary changes and open a pr.
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11:52 < zoq> rcurtin: You don't missed any message.
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13:48 -!- rf_sust2018 [~flyingsau@144.48.108.198] has joined #mlpack
13:48 < rf_sust2018> hello everyone
13:48 < rf_sust2018> :)
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14:28 < zoq> rf_sust2018: Hello there!
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20:17 -!- manthan [6725c94b@gateway/web/freenode/ip.103.37.201.75] has joined #mlpack
20:18 < manthan> zoq : rcurtin : for the same input the checkgradient is failing when i run that specific test(annlayertest/gradientflexiblerelulayertest) and passing when i run all tests of that module (annlayertest)
20:19 < manthan> on logging, i found that errors after evaluate() and gradient are different in both cases even though they have same input.
20:20 < manthan> any ideas on such a situation?
20:24 < rcurtin> manthan: I saw your comment on the issue but I hadn't had a chance to reply
20:24 < rcurtin> have you tried with different random seeds?
20:24 < rcurtin> that is usually the first thing I do in situations like this
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20:25 < manthan> rcurtin : i have made the input fixed. Will changing random seeds make a difference then?
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20:26 < zoq> manthan: Fixed weights as well?
20:26 < manthan> no, just the input and target to the network is fixed (hardcoded)
20:27 < manthan> we should expect same error and same weight update and so same gradients right?
20:27 < zoq> if we use random weights?
20:29 < manthan> ya i thought of that, but for specific test case, the gradients are evaluating to 0
20:29 < manthan> and not once but for all cases
20:32 < manthan> to make it clearer, the orgGradient is always evaluating to 0 during the specific test but non zero values(which makes the test pass) during the entire test module execution.
20:33 < zoq> hm, I wonder if adding the test to the 'parallel_tests' in tests/CMakeLists.txt helps
20:34 < manthan> i am not quite clear with the benefit of adding it there
20:35 < manthan> also, parametric relu is not tested and i think writing checkgradient() for it would fail too (as it similar to flexible relu)
20:36 < zoq> you might be right, I'll make time to take a closer look into the code tomorrow
20:37 < manthan> ya sure, thanks
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23:00 < rcurtin> ok, I have a PyPI mlpack3 package compiling and appears to be working, but now it is too large for PyPI so I had to file an issue: https://github.com/pypa/packaging-problems/issues/136
23:08 < zoq> rcurtin: Hopefully they can easily increase the size.
23:09 < rcurtin> yeah, I see that there are many issues opened in the past that get resolved fairly quickly
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--- Log closed Fri Apr 06 00:00:24 2018