| --- Log opened Tue May 19 00:00:31 2015 | ||
| shogun-buildbot | build #1012 of nightly_default is complete: Failure [failed notebooks] Build details are at http://buildbot.shogun-toolbox.org/builders/nightly_default/builds/1012 blamelist: lambday <heavensdevil6909@gmail.com>, Soumyajit De <heavensdevil6909@gmail.com> | 03:17 |
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| MLnerd84 | hi there. is there anyone here that can answer a question about crossvalidation in shogun? | 22:17 |
| MLnerd84 | Hello? | 22:19 |
| @besser82 | Hey! What do you excatly need to know? | 22:20 |
| @besser82 | *exactly | 22:20 |
| MLnerd84 | So i'm doing CV on a simple libSVM instance using the python modular interface | 22:20 |
| MLnerd84 | And I can perform the CV just fine, and get the result object out. | 22:20 |
| @besser82 | allrighty, so far... but? | 22:21 |
| MLnerd84 | But it seems the only way I can see the result is with the print_result method. | 22:21 |
| MLnerd84 | Is there any way to get at that number without using std out? I'd like to be able to use that value for doing feature selection | 22:21 |
| MLnerd84 | but if I'm constantly having to scrape std out, that's a huge pain | 22:21 |
| lisitsyn | you need to get like evaluation score that you've got? | 22:22 |
| MLnerd84 | it seems like the evaluationresult object has a .mean property, but I can't acess it in the python interface | 22:22 |
| MLnerd84 | Yes | 22:22 |
| @besser82 | You should be able to assign the result to a Numpy array / matrix and use it from there... | 22:23 |
| @besser82 | lemme check... | 22:23 |
| MLnerd84 | How? | 22:23 |
| MLnerd84 | ok | 22:23 |
| lisitsyn | ah | 22:23 |
| lisitsyn | so you get evaluationresult | 22:23 |
| lisitsyn | but it should be crossvalidationresult | 22:23 |
| MLnerd84 | Right | 22:23 |
| lisitsyn | okie easy | 22:24 |
| lisitsyn | CrossValidationResult.obtain_from_generic(your_result) | 22:24 |
| lisitsyn | do that | 22:24 |
| MLnerd84 | ok, let me check if that works | 22:24 |
| lisitsyn | it will return a CrossValidationResult thing from there | 22:24 |
| lisitsyn | mean should be accessible then | 22:24 |
| MLnerd84 | Boom. That did it. | 22:26 |
| MLnerd84 | Thanks | 22:26 |
| @besser82 | lisitsyn, you've been faster... | 22:28 |
| @besser82 | MLnerd84, I don't use Python that much... :P | 22:28 |
| MLnerd84 | Ha. To each their own. | 22:28 |
| lisitsyn | python power | 22:29 |
| MLnerd84 | Thank you very much for the assistance | 22:29 |
| MLnerd84 | snakes and whitespace forever :-P | 22:29 |
| lisitsyn | welcome :) | 22:29 |
| @besser82 | lisitsyn, better step ya game up on da C++ :P | 22:29 |
| lisitsyn | can't encode character u'\blabla' | 22:29 |
| lisitsyn | 99% of python with unicode | 22:30 |
| @besser82 | lisitsyn, use da wchar* | 22:30 |
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| lisitsyn | besser82: unicode in python is like craziest part | 22:30 |
| lisitsyn | once you get to russian/anything_unicode you get weird errors | 22:31 |
| @besser82 | I heard about that, lisitsyn | 22:31 |
| lisitsyn | besser82: related pic http://i45.tinypic.com/znlxqb.png | 22:32 |
| lisitsyn | besser82: the main troubles of python programmer | 22:32 |
| lisitsyn | testing, writing code, design, unicode :D | 22:32 |
| @besser82 | Then choose "???????? ?????" and don't use da "???????" in strings... :P | 22:34 |
| @besser82 | lisitsyn, ^ | 22:34 |
| lisitsyn | besser82: not possible ;) | 22:35 |
| @besser82 | lisitsyn, Y? | 22:35 |
| @besser82 | ??? can't read english? :P | 22:36 |
| lisitsyn | besser82: I have millions search queries to handle and they are all in russian ;) | 22:36 |
| @besser82 | then read the shiats as int and memcmp :P | 22:37 |
| @besser82 | uint16_t[] :P | 22:37 |
| @besser82 | lisitsyn, ^ | 22:37 |
| lisitsyn | besser82: it is not a problem without solution to handle these strings | 22:38 |
| @besser82 | ? | 22:38 |
| lisitsyn | but you always get unexpected error like that you have to fix again and again | 22:38 |
| lisitsyn | like you forgot to encode/decode | 22:38 |
| @besser82 | That's pretty shitty... | 22:39 |
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| --- Log closed Wed May 20 00:00:33 2015 | ||
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