[Numpy-discussion] EHN: Discusions about 'add numpy.topk'

[Benjamin Root]

to be honest, I read "topk" as "topeka", but I am weird. While numpy
doesn't use underscores all that much, I think this is one case where it
makes sense.

I'd also watch out for the use of the term "sorted", as it may mean
different things to different people, particularly with regards to what its
default value should be. I also find myself initially confused by the names
"largest" and "sorted", especially what should they mean with the "min-k"
behavior. I think Dask's use of negative k is very pythonic and would help
keep the namespace clean by avoiding the extra "min_k".

As for the indices, I am of two minds. On the one hand, I don't like
polluting the namespace with extra functions. On the other hand, having a
function that behaves differently based on a parameter is just fugly,
although we do have a function that does this - np.unique().

Ben Root

On Sun, May 30, 2021 at 8:22 AM Neal Becker <ndbecker2 at gmail.com> wrote:

> Topk is a bad choice imo.  I initially parsed it as to_pk, and had no idea
> what that was, although sounded a lot like a scipy signal function.
> Nlargest would be very obvious.
>
> On Sun, May 30, 2021, 7:50 AM Alan G. Isaac <alan.isaac at gmail.com> wrote:
>
>> Mathematica and Julia both seem relevant here.
>> Mma has TakeLargest (and Wolfram tends to think hard about names).
>> https://reference.wolfram.com/language/ref/TakeLargest.html
>> Julia's closest comparable is perhaps partialsortperm:
>> https://docs.julialang.org/en/v1/base/sort/#Base.Sort.partialsortperm
>> Alan Isaac
>>
>>
>>
>> On 5/30/2021 4:40 AM, kangkai at mail.ustc.edu.cn wrote:
>> > Hi, Thanks for reply, I present some details below:
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