mlpack IRC logs, 2020-02-14

Logs for the day 2020-02-14 (starts at 0:00 UTC) are shown below.

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--- Log opened Fri Feb 14 00:00:01 2020
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01:10 < outmanipulateGit> Hey everyone, I'm Mani Tyagi, a 3rd year student at IIT Delhi. I look forward to contribute to mlpack reinforcement learning being an AI research student. For now I'm having trouble installing dependencies. It showsUnable to locate package libensmallen-dev
01:10 < outmanipulateGit> Unable to locate package libstb-dev
01:11 < outmanipulateGit> I searched some more and found this link but wasnt helpful https://www.mlpack.org/irc/mlpack.20191001.html
01:11 < outmanipulateGit> Can anyone help?
01:56 < rcurtin> outmanipulateGit: are you sure the version of Ubuntu or Debian you are using is new enough? you may need to upgrade
02:19 < Param-29Gitter[m> Hello, @zoq @rcurtin I have added a comment of all the things that you guys wanted to know about #2169. Please have a look once you are free. Speed Up percentage for 1900 samples is 48% and it increases with increase in number of samples.
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03:35 < outmanipulateGit> @matrixbot I'm using Ubuntu 18.04 I don't suppose that's an issue right?
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04:15 < birm[m]1> It may not be a bad idea for someone with appveyor permission to cancel the builds associated with all but my latest commits on the model repo. Otherwise it'll block for up to 12 hours.
04:20 < rcurtin> outmanipulateGit: hmm, ensmallen is available on at earliest 19.10. but mlpack's CMake configuration can automatically download ensmallen and stb locally, so even if you can't install them it shouldn't be an issue
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07:11 < heisenbug> Heyyy...
07:11 < heisenbug> I want to contribute to MLPack in GSoC 2020
07:12 < heisenbug> I was thinking that we should add some more models to the model zo
07:12 < heisenbug> zoo*
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08:58 < Nakul[m]1> heisenbug https://www.mlpack.org/gsoc.html
08:59 < Nakul[m]1> rcurtin: have a look at #2075
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14:04 < PrinceGuptaGitte> Hi @zoq , Thanks for reviewing my PR #2184 , I've made the changes you've suggested.
14:05 < PrinceGuptaGitte> Also I apologize it took so long for such minor things.
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15:59 < PrinceGuptaGitte> Hi @kartikdutt18, I am working on triplet margin loss. I'm confused about how I should implement the back propagation. Should i find partial diff. of cost w.r.t to positive sample encoding, negative sample encoding or anchor encoding or should I take average of all of them. Can you please give some input so I can proceed further
15:59 < PrinceGuptaGitte> (edited) ... Should i find ... => ... Should I find ...
16:09 * chopper_inbound[ uploaded an image: triplet_loss.svg (12KB) < https://matrix.org/_matrix/media/r0/download/matrix.org/RAhlUYrsbtpqOZSgKpKcbPhs >
16:09 < chopper_inbound[> Prince Gupta: Considering this, you need to differentiate wrt. A
16:10 < kartikdutt18Gitt> Hi @prince776, I think we should implement partial derivative wrt anchor input.
16:13 < kartikdutt18Gitt> I think in that case derivative will be same derivative of MSE with input anchor and positive input minus derivative of MSE of anchor and negative input, If I'm not wrong.
16:13 < kartikdutt18Gitt> *as
16:14 < PrinceGuptaGitte> @kartikdutt18 @chopper_inbound thanks for the help.
16:14 < PrinceGuptaGitte> I have one last query, when i looked at code of other loss functions like mean_squared_error, it uses arma::accu() function, which takes summ of all elemtns of vec/matrix/cube
16:15 < PrinceGuptaGitte> (edited) ... help.
16:15 < PrinceGuptaGitte> I have one last query, when i looked at code of other loss functions like mean_squared_error, it uses arma::accu() function, which takes summ of all elemtns of vec/matrix/cube => ... help.
16:15 < kartikdutt18Gitt> If we do it wrt to positive or negative input we will loose other terms. And we generally differentiate wrt input
16:15 < PrinceGuptaGitte> Everything's clicking again and now I can easily compare it to logistic regression, thanks a lot
16:15 < kartikdutt18Gitt> Great.
16:17 < PrinceGuptaGitte> Partial Derivative w.r.t anchor is coming to be 2(Negative - Positive)
16:18 < PrinceGuptaGitte> Is it correct?
16:18 < kartikdutt18Gitt> Yes, I think anchor input got cancelled out right?
16:19 < PrinceGuptaGitte> Yes
16:19 < kartikdutt18Gitt> Great, I think this is correct.
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17:12 < Ibtihaj> SVM in mlpack supports kernels ?
17:18 -!- Ibtihaj [cbd7be23@203.215.190.35] has quit [Remote host closed the connection]
17:18 < sailor[m]> <outmanipulateGit "Hey everyone, I'm Mani Tyagi, a "> did you overcome this error?
17:18 < sailor[m]> <sailor[m] "did you overcome this error?"> same error happened for me as well.
17:24 < sailor[m]> > <undefined>
17:24 < sailor[m]> (edited) same error happened for me as ... => im facing the same issue as ...
17:48 < sailor[m]> <sailor[m] "same error happened for me as we"> "sudo apt-get install -y libbfd-dev" solved the problem for me.
18:38 < PrinceGuptaGitte> Hi @kartikdutt18 , I've added the Triplet Margin Loss. Since it's slightly different from other functions(it takes 3 inputs and not 2) I'm unsure if my implementation in correct. Please review it once you get time. PR #2208 . Thanks
18:44 < kartikdutt18Gitt> Hi @prince776, I will take a look. Thanks for all your work.
22:08 < jeffin143[m]> lbtihaj : no currently we only have linear svm , and no kernels
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--- Log closed Sat Feb 15 00:00:02 2020