Re: AIscm array operations for Scheme

[Nala Ginrut]

Looks promising! What's the plan about AIscm in the future? Is it aiming
for a library, or something research tool like Sage?

2017年8月3日 15:23，"Jan Wedekind" <address@hidden>写道：

> Thanks.
> Currently neither. I have in mind to add some LAPACK bindings (singular
> value decomposition, eigenvalue decomposition, least squares to begin
> with). First full native floating point support needs to be implemented.
> Here is an example of a matrix vector product:
>
>     (use-modules (aiscm sequence) (aiscm expression) (aiscm tensor))
>     (tensor i (sum k (* (get (arr (2 3) (5 7)) i k) (get (arr 11 13) k))))
>     $3 = #<sequence<int<8,unsigned>>>:
>     (87 124)
>
> Floating point values currently fall back on Scheme objects:
>
>     (tensor i (sum k (* (get (arr (2 3) (5 7)) i k) (get (arr 1.1 1.3)
> k))))
>     $4 = #<sequence<obj>>:
>     (8.7 12.4)
>
> Note that in this case the array loops are still JIT compiled. Addition
> and multiplication are handled by JIT compiling callbacks into GNU Guile
> (scm_plus, scm_product).
>
> Regards
> Jan
>
>  On Thu, 3 Aug 2017, Nala Ginrut wrote:
>
> Nice work!
>> Do you use BLAS or MKL for vector operation?
>>
>>
>> 2017年8月3日 04:16，"Jan Wedekind" <address@hidden>写道：
>>
>> Hi,
>>> I have released a new version of AIscm [1]. A Guile extension for
>>> numerical arrays and tensors. It now supports convolutions [2] and tensor
>>> operations [3]. There are packages for different versions of Debian and
>>> Ubuntu. Also thanks to Andrey Rahmatullin's sponsorship, the package is
>>> part of Debian Testing [4].
>>>
>>> Regards
>>> Jan
>>>
>>> [1] http://wedesoft.github.io/aiscm/
>>> [2] http://wedesoft.github.io/aiscm/convolution.html
>>> [3] http://wedesoft.github.io/aiscm/operation.html#tensor-operations
>>> [4] https://tracker.debian.org/pkg/aiscm
>>>
>>>
>>>