IRC logs of #shogun for Thursday, 2018-05-31

« Wednesday, 2018-05-30 Index Friday, 2018-06-01 »
--- Log opened Thu May 31 00:00:29 2018
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4317 synchronized by vinx1304:56
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4316 synchronized by vinx1304:56
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4316 closed by vinx1304:58
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4316 synchronized by vinx1304:58
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4316 synchronized by vinx1305:00
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4316 reopened by vinx1305:00
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4316 merged by vigsterkr07:46
@sukey[https://github.com/shogun-toolbox/shogun] vigsterkr pushed 2 commits:07:46
@sukeyhttps://github.com/shogun-toolbox/shogun/commit/74d8dba0ab36d1d4b16d98e38d0df63f819391d107:46
@sukeyhttps://github.com/shogun-toolbox/shogun/commit/1cc9b920b472ac3207afdf4d203b98c46f3177fe07:46
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travis-ciit's Wuwei Lin's turn to pay the next round of drinks for the massacre he caused in shogun-toolbox/shogun: https://travis-ci.org/shogun-toolbox/shogun/builds/38603011508:47
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4318 opened by vinx1308:54
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4318 synchronized by vinx1309:07
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wuweiwiking: any idea for data locking for refactor ?09:50
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4318 synchronized by vinx1311:22
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@HeikoSlisitsyn: around?12:09
@HeikoSshubham808: hey12:20
@HeikoShow are things going?12:20
shubham808i was working on the perceptron thing12:21
@HeikoSah you mean making the state change even when it is not initialised?12:22
@HeikoScool, should be a quick fix no?12:22
shubham808yes yes12:22
shubham808actually no12:22
shubham808i am debugging what went wrong12:22
shubham808the assertion at LinearMachine line 89 failed12:23
shubham808it checks for correct diemnsions of weight vector12:23
@HeikoSmaybe it wasnt initialised correctly12:25
shubham808probably...12:28
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shubham808i will dig deeper then get back to u12:30
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4319 opened by vinx1313:02
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shubham808HeikoS hey13:10
shubham808I have a question about vectors13:11
shubham808around ?13:21
@HeikoSshubham808: sure shoot13:32
shubham808https://pastebin.com/dD4nPbwL13:34
shubham808all 3 are not same13:34
shubham808w = get_w() and m_w are not pointing to same location are they ?13:36
wuweiheiko: could u restart this https://travis-ci.org/shogun-toolbox/shogun/jobs/38609326713:37
@wikingwuwei, done13:42
wuweithanks!13:43
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4318 synchronized by vinx1314:21
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@HeikoSshubham808: I guess you could also use set_w14:38
@HeikoSif you wanna change ity14:38
@HeikoSi.e. create the initialisation w lolcally14:38
@HeikoSand then set it14:39
shubham808so14:45
shubham808we could go like14:45
shubham808SGVector<float64_t> w;set_w(w);14:45
shubham808then when i w.resize_vector(num_feat) the m_w.vector should be getting resized ?14:46
wuweihi, a quick question about c++15:15
wuweiwhat's the suggested way to achieve something like:15:16
wuweifor (index, iter: DotIterator(feats))15:16
@HeikoSshubham808: no15:21
@HeikoSyou would do15:21
@HeikoSw=SGVector(...)15:21
@HeikoSset_w(w)15:21
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@wikingwuwei, index is for?15:35
@wikingi mean i know... seen this pattern everywhere15:35
wuweiindex is for feature vector15:36
wuweiwe have iterator, but index is still used15:36
@wikingyeah15:36
@wikingone super annoying way15:37
@wikingyou expose the idx via iterator15:37
@wiking:D15:37
@wikingwuwei, https://faouellet.github.io/enumerate/15:40
@wikinghttps://infektor.net/posts/2017-03-31-range-based-enumerate.html#range-based-enumerate15:41
@wikingbut that's c++1715:41
wuweiyeah :)15:41
wuweithat would be good, when we have c++1715:42
@wikinghttps://skebanga.github.io/structured-bindings/15:42
@wiking:>15:42
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4320 opened by shubham80815:50
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/432015:51
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4287 synchronized by shubham80816:01
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4287 synchronized by shubham80816:18
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4320 synchronized by shubham80816:34
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shubham808HeikoS hey16:34
@HeikoSshubham808: hi16:34
shubham808about the set_w16:34
shubham808we want inside the if right?16:34
shubham808because if we want to initialize we will need to set it16:35
@HeikoSyou only want to overwrite it if m_initialise is true16:35
shubham808but we can just get the user initialized one in the else ?16:35
@HeikoSotherwise, you just want to get it16:35
@HeikoSi.e. you dont wanna change it if initilize=false16:35
shubham808i see i see16:35
@HeikoSso the user can initialize themselves16:35
shubham808i made an update16:39
shubham808now what it says is16:39
shubham808if(inititialize_hyperplane)set_w(w);16:39
shubham808else w = get_w(); //initialize is false so we can use the user provided16:40
shubham808look okay ?16:43
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4320 synchronized by shubham80817:54
shubham808HeikoS hey17:56
@HeikoSshubham808: hi17:56
shubham808i wrote a test17:56
@HeikoScool17:57
shubham808its a bit copy paste atm17:57
@HeikoSfixtures are your friend there17:57
@HeikoSand moving shared code into functions17:57
@HeikoSbut show :)17:57
shubham808pushed17:57
@HeikoSreading it17:57
@HeikoSah ok17:57
@HeikoSso the thing i had in mind is17:57
@HeikoStwo tests17:58
@HeikoS1. user wants to specify a custom initialization, which is used as a start from training17:58
@HeikoS2. user doesnt care17:58
@HeikoS2. is something that we probably test already17:58
@HeikoSso you need to write a test for 117:58
shubham808yep17:58
shubham808so i initialized the weights to 117:59
@HeikoSok cool17:59
@HeikoSso how do you know it worked?17:59
@HeikoSthe test doesnt really check that17:59
@HeikoSI would maybe initialise it to something that you know is a solution (maybe from a previous run)17:59
@HeikoSand then run one iteration17:59
shubham808i see18:00
@HeikoSand then make sure it didnt change (i.e. it converged immediately)?18:00
@HeikoSsomething like this18:00
@HeikoSquite minimal18:00
@HeikoSevaluating accuracy is a bit of an overkill18:00
@HeikoSall you want is to ensure that the algorithm is "hot started"18:00
@HeikoSand also18:00
shubham808yeah thats true18:00
@HeikoSso maybe18:01
@HeikoStrain model to convergence18:01
@HeikoSthen copy that w18:01
@HeikoScreate new model18:01
@HeikoSset that w18:01
@HeikoStrain18:01
@HeikoSassert that it didnt change (i.e. immediate convergence)18:01
shubham808set max_iter to 118:01
shubham808(to make sure it converges immediately)18:04
@HeikoSno need18:05
@HeikoSif w is already a solution, the algorithm should converge automatically right?18:05
@HeikoSshubham808: perceptron checks if there are any classification errors, and if no, it stops18:05
@HeikoSonly if there are errors, it changes w18:05
shubham808righ right18:06
shubham808we just make sure w didnt change then18:06
shubham808after training18:06
@HeikoSyep18:11
@HeikoSit is basically a test for "hot starting"18:11
@HeikoSwe could think about generalising this to other models later, but for now let's just do it for the perceptron18:11
shubham808one more thing18:15
shubham808suppose that the custom initialization didnt work18:17
shubham808the assertion will still pass18:17
shubham808do u see ?18:17
shubham808because even if its not hot started it will still reach the correct weights vector on convergence18:20
shubham808right ?18:20
@HeikoShey18:24
@HeikoStrue18:25
@HeikoSin that case, I think your idea of restricting the number of iterations to small will help18:25
@HeikoSshubham808: good catch! :18:25
shubham808yeah but18:25
shubham808u see perceptron only generates a warning if the number of max iters exceeds18:26
@HeikoSthats fine18:26
shubham808how do we unit test that ?18:26
@HeikoSyou just set it to 118:26
@HeikoSmax iter = 118:26
@HeikoSthen you call train18:26
@HeikoSand then afterwards you check that w wasnt changed (i.e. it converged with less than one iteration)18:26
@HeikoSmight need to set it to 218:26
shubham808right right18:27
shubham808yep got it18:27
shubham808iters = 0 in begining so max_iter =1 should be fine18:28
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4320 synchronized by shubham80818:31
@wikingwuwei, r u here by any chance?18:51
wuweiwiking: yes18:52
@wikingwuwei, we forgot one thing :)18:52
@wikingin case of transformers18:52
@wikinginverse transform :)18:53
wuweiu mean we should implemnet inverse transform?18:54
@wikinginterface as well as implement18:54
wuweiwell, it's not always easy to implement inverse18:57
@wikingsure18:57
wuweilike sorting18:57
@wikingbut currently we dont even have an interface for it :)18:57
@wikingmeaning even if it's trivial18:58
@wikingthere's no standard way of doing it18:58
@wiking(say scaling)18:58
wuweiyeah18:59
@wikingbut it'd be good to have18:59
@wikingwhat's your current task at hand?18:59
@wikingpipeline?18:59
wuweimachine refactor19:00
@wikingfit/predict?19:00
wuweiyeah19:00
@wikinghttps://github.com/shogun-toolbox/shogun/pull/4318 can be merged right?19:01
wuweiyeah19:01
@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4318 merged by vigsterkr19:01
@sukey[https://github.com/shogun-toolbox/shogun] vigsterkr pushed 5 commits:19:01
@sukeyhttps://github.com/shogun-toolbox/shogun/commit/246819f932cd982a9ea30e7fcf4e24157a57374819:01
@sukeyhttps://github.com/shogun-toolbox/shogun/commit/fae9e76fa4eeae3dc9312581eb499962969aa2da19:02
@sukeyhttps://github.com/shogun-toolbox/shogun/commit/f42efa2a142da4b685f88d386f45133ed45a3ac719:02
@sukeyhttps://github.com/shogun-toolbox/shogun/commit/35089ea8e81a666edc677b6af72f6dcc5b4a154319:02
@sukeyhttps://github.com/shogun-toolbox/shogun/commit/20f7808dc649e98bf52f84d9fc2eb1ea3d9c2e0219:02
-shogun-buildbot:#shogun- Build trusty - libshogun - viennacl #499 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/6/builds/49919:02
-shogun-buildbot:#shogun- Build deb1 - libshogun #470 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/10/builds/47019:02
-shogun-buildbot:#shogun- Build trusty - libshogun #404 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/33/builds/40419:02
-shogun-buildbot:#shogun- Build deb3 - interfaces #359 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/37/builds/35919:03
-shogun-buildbot:#shogun- Build FC23 - libshogun #504 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/27/builds/50419:03
@wiking:O19:04
@wikingwtf19:04
@wiking:D19:04
@wikingshogun data?19:04
-shogun-buildbot:#shogun- Build zesty - libshogun #492 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/13/builds/49219:04
-shogun-buildbot:#shogun- Build yakkety - libshogun #496 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/1/builds/49619:04
-shogun-buildbot:#shogun- Build xenial - libshogun #493 is complete: Failure [failed update shogun (failure)] - http://buildbot.shogun-toolbox.org:8080/#builders/16/builds/49319:04
wuweineed merge data pr:)19:04
wuweiyeah19:05
@wikingdone19:05
@wikingok next push to develop will correct this :D19:06
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@wikingFarouk, y019:15
Faroukwiking, hey19:15
Faroukwiking, just looked at the feedback. I am assuming that the .sg file is fine now so I can send a pr to shogun-data correct?19:16
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@sukey[https://github.com/shogun-toolbox/shogun] Pull Request https://github.com/shogun-toolbox/shogun/pull/4320 synchronized by shubham80819:28
shubham808wiking: hey19:32
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shubham808had a question about meta examples :)19:34
@wikinghi19:39
@wikingsorry folks19:39
@wikingi need about 10m19:39
@wikingand i;'ll get back here19:39
@wikingbrb19:39
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shubham808wiking: cool :)20:03
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@wikingok pepes i'm here20:40
shubham808hey hey20:52
@wikingshubham808, ok shoot what was the question20:53
shubham808wiking: about meta examples20:53
shubham808i was planning on porting FeatureBlockLogisticRegression to meta20:53
@wikingic20:53
shubham808https://github.com/shogun-toolbox/shogun/blob/20f7808dc649e98bf52f84d9fc2eb1ea3d9c2e02/examples/undocumented/python/classifier_featureblock_logistic_regression.py#L2220:54
shubham808got stuck with hstack here20:54
@wikingohoooo20:56
@wikingi mean that's just a trick in our case20:56
@wikinghow we can generate easily the 2 blocks20:57
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shubham808i see20:57
shubham808how do we translate this to .sg20:57
@wikingyeah actually that should not be translated20:58
@wikingas obviously this (hstack) only available in py20:58
shubham808yep yep20:58
@wikingi'm just trying to quickly figure out20:58
shubham808i meant a work around maybe ?20:58
@wikinghow we can do this with a trick20:58
@wikingbut worst case we add a new data :D20:58
@wikingthat has this :P20:58
@wikingthat way it's just csvfile etc20:59
shubham808yeah doable20:59
shubham808(worst case)20:59
@wikingi mean to be honest20:59
@wikingwe just need something where we can divide the input data into two blocks21:00
@wikingfm_train_real.dat is usually 2 features21:00
@wikingi wonder if we would divide into 2 blocks21:00
@wikingwhat happens :)21:00
shubham808:S not sure i get it21:04
@wikingok so21:06
@wikingonce you read in the toy data21:06
@wikingyou can just do the same as in case of the hstack21:06
@wikingdefine the 2 blocks21:06
@wikingone for each feature21:06
@wikingso simply read in the default toy dataset for integration tests21:07
@wikingand define blcoks like21:07
@wiking0, n_samples/221:07
@wikingblock1((0,n_features/2)21:07
@wikingblock2(n_features/2, n_features)21:07
@wikingand see how it goes21:07
@wikingw/o the stacking21:07
shubham808so essentially dividing the toy data in half?21:09
@wikingyes21:09
shubham808okay21:10
shubham808might work21:10
shubham808yes :)21:18
shubham808works fine21:18
shubham808Thanks21:20
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Faroukwiking, is there a link for the Zoom meeting?21:58
Faroukor just the old link?21:58
@wikingold one21:58
@wikingok lemme try to log in21:58
Faroukit says its waiting for the host to start the meeting22:01
iglesiasgyep22:02
iglesiasgfor me too22:02
@wikingimin22:04
@wikingtry now22:04
@wikingsorry22:04
@wikingFarouk, i guess you cannot hear us?22:07
@wikingbecause certainly we cannot hear u22:07
FaroukYea can't hear you22:07
Faroukill restart windows and call you22:08
Farouksorry for the delay22:08
@wikingkk22:08
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iglesiasgwiking, https://github.com/shogun-toolbox/shogun/pull/4309/files#diff-850db6d5082e9cf6bbf0ddb8e5ad2ab3R5322:16
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iglesiasghttps://github.com/shogun-toolbox/shogun/pull/4309/files#diff-850db6d5082e9cf6bbf0ddb8e5ad2ab3R5322:17
@sukey[https://github.com/shogun-toolbox/shogun] Issue https://github.com/shogun-toolbox/shogun/issues/4321 opened by vigsterkr22:20
@sukey[https://github.com/shogun-toolbox/shogun] Issue https://github.com/shogun-toolbox/shogun/issues/432122:20
@sukey[https://github.com/shogun-toolbox/shogun] Issue https://github.com/shogun-toolbox/shogun/issues/4321 vigsterkr added label: "SWIG"22:20
@sukey[https://github.com/shogun-toolbox/shogun] Issue https://github.com/shogun-toolbox/shogun/issues/4321 vigsterkr added label: "BUG"22:20
Faroukhttps://pastebin.com/Yxf6sebY22:28
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--- Log closed Fri Jun 01 00:00:31 2018
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