| --- Log opened Mon Oct 01 00:00:17 2012 | ||
| shogun-buildbot | build #119 of nightly_default is complete: Failure [failed test] Build details are at http://www.shogun-toolbox.org/buildbot/builders/nightly_default/builds/119 | 03:58 |
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| yoo | hi all | 10:57 |
| yoo | could someone explain me the way string features are handle/compute ? | 10:58 |
| yoo | I ve seen table for conversin bin <--> uchar | 10:58 |
| yoo | what's the use of "1 << (sizeof(uint8_t)*8)" | 10:59 |
| @sonney2k | yoo, bitmasking magic | 12:16 |
| yoo | sonney2k: yea =) is there any documentation on string features implementation details ? | 13:02 |
| @sonney2k | yoo, only in my head. what do you want to know? | 13:27 |
| yoo | I would like to experiment string kernels with bigger dictionnary than RAWDIGIT and high order too | 13:30 |
| yoo | maybe I can add my own preprocess to help those computations | 13:31 |
| yoo | investigating the problem .. | 13:31 |
| @sonney2k | yoo, hmmhh how big is the dictionary? | 13:40 |
| yoo | let's say 1000 words | 13:41 |
| @sonney2k | yoo, well you could use stringwordfeatures for that | 13:43 |
| @sonney2k | for any higher order business I would recommend to create some hashed string features either as extra object or on-the-fly | 13:45 |
| yoo | stringwordfeatuers ? u mean CSortWordString ? | 13:46 |
| @sonney2k | yoo, no. CStringFeatures<uint16_t> | 13:46 |
| yoo | well yes I already use those features | 13:47 |
| yoo | but limited with RAWBIT alphabet | 13:47 |
| yoo | there should be something I misunderstand . For example, the CCommWordStringKernel : when you pass a list of string and an alphabet : strings are stored and histogram (order 1) is computed. | 14:18 |
| yoo | If you want order two histogram: you need to call obtain_for_char() and then run the sort preprocess. right ? | 14:19 |
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| yoo | sonney2k, what append if I created stringfeatures using constructor taking SGStringList<uint64_t> and Ealphabet RAWBYTE in arguments. there are no enough symbols in the dictionnary to represent list of string containing values in [0,1000] for exmaple. | 15:11 |
| yoo | sonney2k: what should be done then ? | 15:11 |
| yoo | blackburn: Hi, is has been a while .. didnt had the time to PR the mkl patch .. sorry, I will do this week! | 15:12 |
| blackburn | yoo: hey | 15:13 |
| blackburn | no problem, any time is ok | 15:13 |
| yoo | blackburn: and thx again for the vimrc config file, I am still trying to make completion working (for shogun, stl, .. ) using clang .. but seems hard! | 15:15 |
| blackburn | yoo: why? works out of box here | 15:15 |
| yoo | wtf ? | 15:15 |
| yoo | :p | 15:15 |
| blackburn | are you installing shogun to default dir? | 15:16 |
| yoo | yes | 15:16 |
| blackburn | strange it doesn't work oob then | 15:20 |
| yoo | blackburn: are you aware of stringfeatures constructor which can handle dictionnay bigger than RAWBYTE (=256) | 15:51 |
| blackburn | I don't know to be honest | 15:53 |
| yoo | sonney2k: for now I create stringfeatures with values \in[0,1000] but when you call constructor with alpha = RAWBYTE then only 256 symbols are used in histogram ... am I wrong ? | 15:56 |
| yoo | maybe I miss smthg in using the stringfeatures ! | 15:58 |
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| --- Log closed Tue Oct 02 00:00:17 2012 | ||
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