Pavel Gorgulov

Create DirectNDArray based on numpy ndarray

4

There is `ndarray` in python, which we received as a result of some manipulations. At the moment, in Java, we can get a simple `NDArray`, but in order not to...

can't convert column to toLocalDateTime with format

2

I miss this function: ```kotlin df.convert("date_time").toLocalDateTime("yyyy-MM-dd'T'HH:mm:ss'Z'") ```

If use multik-default, will still get an `INSTALL_FAILED_NO_MATCHING_ABIS` error. Because, when building an apk, all dependencies and corresponding native libraries are bundled.

Refactor usage complex arrays

1

Many methods use the standard get for complex arrays, but each call creates an object, which is bad for perfomance. Critical for linear algebra functions.

c fun doesn't work via cinterop

1

Native functions from math, linalg don't work in `multik-openblas` for native targets via cinterop wrapper

https://kotlinlang.org/docs/whatsnew-eap.html#preview-of-the-operator-for-creating-open-ended-ranges

get rid of copying in reshape, unsqueeze, expand_dims

add calculate eigenvalues and vectors in multik-kotlin

add norm: - [ ] Inf - [ ] 1 - [ ] Max