| --- Log opened Tue Feb 12 00:00:07 2019 | ||
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| @wiking | wuwei[m]: are you here? | 10:11 |
|---|---|---|
| wuwei[m] | wiking: hey | 10:31 |
| Lefteris | gf712, any news about the ATI meeting next week? | 11:00 |
| gf712 | hey, sorry about that I'll find a meeting room now | 11:08 |
| gf712 | wiking what time are you arriving/leaving next week? | 11:08 |
| Lefteris | No problem gf712 I don't have anything scheduled next week so I am free for any date/time | 11:15 |
| @wiking | gf712: i think tuesday would be ideal but i would get back to you | 11:16 |
| @wiking | i should be there on 18-19 and 20 (on the 20th i leave on the afternoon) | 11:16 |
| gf712 | wiking Lefteris: OK, I'll book something for Tuesday afternoon and then can book more rooms if needed | 11:34 |
| Lefteris | OK, I will book tickets for Tuesday then | 11:41 |
| Lefteris | Thanks! | 11:41 |
| Lefteris | gf712, I am working on removing the m_gradient_parameters. The additions in PR https://github.com/shogun-toolbox/shogun/pull/4432/files might be helpfull. Is there a plan to merge it? | 12:21 |
| Lefteris | I can steal it until you merge it :P | 12:24 |
| gf712 | Lefteris yes it should be merged in https://github.com/shogun-toolbox/shogun/pull/4522 | 12:27 |
| Lefteris | Ah, ok, thansk | 12:28 |
| gf712 | just thinking if it is worth making it return by reference | 12:28 |
| gf712 | I am not sure what is happening behind the scenes but without any optimisation I think the map is being copied twie | 12:29 |
| gf712 | twice | 12:29 |
| gf712 | once by std::copy_if and then copied when it is returned | 12:29 |
| gf712 | Lefteris is this correct? | 12:29 |
| Lefteris | I think is better to not use a reference return. I believe it is safer the way you have it | 12:33 |
| Lefteris | Are you worried about performace? | 12:34 |
| gf712 | yes, but I guess it doesn't matter too much in this case | 12:36 |
| gf712 | in which situation are you going to use it? | 12:37 |
| Lefteris | I want to get the parameters that are gradients and for another case model_parameters | 12:38 |
| Lefteris | Also, ParametersMap result will go out of scope if you return it by reference | 12:39 |
| Lefteris | Go to the end of this page to see example https://www.tutorialspoint.com/cplusplus/returning_values_by_reference.htm | 12:40 |
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| gf712 | Lefteris true! | 13:03 |
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| feriglegarc | gf712: https://en.cppreference.com/w/cpp/language/lambda | 16:16 |
| feriglegarc | dangling references paragraph might explain it? | 16:16 |
| gf712 | feriglegarc The issue only appears when I do casting in the lambda | 16:44 |
| @wiking | wuwei[m]: ok | 16:48 |
| @wiking | so yeah the problem is that pipeline woudl be then | 16:48 |
| @wiking | class Cpipeline: public CMachine, public CTransformer | 16:49 |
| @wiking | right? | 16:49 |
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| wuwei[m] | yes | 16:49 |
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| @wiking | afaik swig doesn't support multiinheritance | 16:49 |
| @wiking | "as limited or allowed by the target language" | 16:49 |
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| @wiking | "813. Warning for classname, base baseclass ignored. Multiple inheritance is not supported in Java. (Java)." | 16:50 |
| @wiking | "833. Warning for classname, base baseclass ignored. Multiple inheritance is not supported in C#. (C#)." | 16:50 |
| @wiking | so yeah we would loose c# and java then | 16:51 |
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| wuwei[m] | what is the behaviour in java c#? the base class is ignored, do we still have the api available? | 16:52 |
| @wiking | i think the whole class is ignored thne | 16:52 |
| wuwei[m] | that's terrible | 16:53 |
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| @wiking | yep | 16:53 |
| wuwei[m] | we can put the transformer parts to a interface "transform", but we are not able to pass pipeline as a transformer | 16:54 |
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| gf712 | wiking the shogun.ml website seems to be down? | 17:11 |
| @wiking | yes | 17:11 |
| @wiking | the server's hdd got full | 17:11 |
| @wiking | i'm working on it | 17:11 |
| @wiking | :D | 17:11 |
| gf712 | ah ok, just checking you knew! | 17:11 |
| gf712 | wiking did anything happen in the last couple minutes of the meeting? My connection went down | 17:12 |
| @wiking | we were just discussing pipeline problems | 17:12 |
| @wiking | :> | 17:12 |
| gf712 | last part I heard was taking stuff from swig because of factories | 17:12 |
| gf712 | OK! | 17:12 |
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| feriglegarc | gf712: about the cast in the lambda - I don't know for sure right away. At what point have you detected the dangling reference, returning from the lambda or just after the cast it is already corrupted | 17:22 |
| feriglegarc | ? | 17:23 |
| gf712 | feriglegarc: the bad memory error appears when I call the lambda. I am not sure I can break it down further | 17:37 |
| gf712 | I think casting references inside a lambda is the issue but I haven't checked it yet | 17:38 |
| gf712 | but capturing references and accessing their data members works fine | 17:39 |
| gf712 | I.e. capture num_lhs and then dereferencing it *num_lhs works fine | 17:41 |
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| feriglegarc_ | gf712: all right | 17:43 |
| feriglegarc_ | maybe checking the output directly after the cast can shed some light | 17:43 |
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| --- Log closed Wed Feb 13 00:00:09 2019 | ||
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