Re: [Kaldi-developers] python wrappers for Kaldi

[Daniel P. <dp...@gm...>]

Also, Jan- could you send us an email explaining how this works-
  How does Python "see" the C++ headers?  Do you have to invoke some
special program, like swig?  Do you have to write some special kind of
header that shows how the C++ objects are to be interpreted by python?
 A brief example would be helpful, if so.
  How is the resulting program linked, if at all?  If you require
functions C++ libraries, are these obtained from the .a or .so files
at runtime, or compiled into some kind of executable-like blob at
compile time?  Does your framework require that Kaldi be compiled
using dynamic (.so) libraries?

Dan


On Sat, Dec 13, 2014 at 12:04 PM, Jan Chorowski <jan...@gm...> wrote:
> Hello Dan,
>
> thank you for the comments. I tried to make it in the Kaldi spirit,
> consistency is important. Of course, the scripts can be removed and replaced
> with some more useful examples. I don't have too much experience with
> bridging Python to C++, so any critique on the wrappers and the approach
> taken is welcome.
>
> Jan
>
>
> On 12/13/2014 2:55 PM, Daniel Povey wrote:
>>
>> Hi all.
>>  From a first look, it does look very impressive, and nicely documented.
>> I would appreciate it if people on the list who have Python experience
>> would comment on this- you can either reply to this thread, or to me.
>> I don't know if this has been done in the "natural" way, or if there
>> is some reason why people in the future will say, "why did you do it
>> this way, you should have done XXX".
>>
>> Jan:
>> in the scripts/ directory you seem to have some examples of how you
>> can create python programs that behave very much like Kaldi
>> command-line programs, using your framework.  This is very useful.
>> However, the programs
>>   apply-global-cmvn.py
>>   compute-global-cmvn-stats.py
>> are perhaps a little confusing because they provide the same
>> functionality that you could get with "compute-cmvn-stats ->
>> matrix-sum" and "apply-cmvn" on the output of that command; and they
>> do so using different formats for the CMVN information.  I know the
>> format of storing the CMVN stats in a two-row matrix is perhaps not
>> perfectly ideal, but it's a standard within Kaldi and it would be
>> confusing to deviate from that standard.
>> Of course, this is a very minor issue that doesn't affect the validity
>> of the framework as a whole.  I am just pointing this out; the main
>> discussion should be about the framework and whether people feel it's
>> the "right" way to do this.
>>
>> Dan
>>
>> On Sat, Dec 13, 2014 at 6:28 AM, Jan Chorowski <jan...@gm...>
>> wrote:
>>>
>>> Hi all!
>>>
>>> I've written wrappers to access Kaldi data files from within Python
>>> using boost::python (the code is on github
>>> https://github.com/janchorowski/kaldi-git/tree/python/src/python). If
>>> you think this would be an interesting addition please instruct me how
>>> to contribute.
>>>
>>> Best Regards,
>>> Jan Chorowski
>>>
>>>
>>>
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>