Project members: Stanislav Chernyavyy And Nikolay Fomenko

Problems we have:

https://codeclimate.com/github/mmcs-ruby/silicium/issues?category%5B%5D=complexity&category%5B%5D=duplication&status%5B%5D=&status%5B%5D=open&status%5B%5D=confirmed&engine_name%5B%5D=structure&engine_name%5B%5D=duplication

Algorithm that used to update weights and other hyperparametrs of neural network based on loss function

RBT implementation

Firstly gradient descent and then others

I get an exception when I try to initialize a vertical line. But they exist and I want to use them.

Also by gradient descent

formation of a raster image (bmp, png) based on the graph class

@DdiavaLL @NechushkinGit @Dobrzhanskij
Please, tag other team members.

I closed your PR to master since we are working on refactoring branch now. I also made PR and resolved conflicts (probably, not so well, so check master at @NechushkinGit repo), so currently we have all your code at refactoring branch.
Keep making PRs to this branch

What we need now is good test coverage. For example, coef_to_str has no tests on it.
I've split tests into two files - Look at test/algebra_diff_test.rb

In numerical linear algebra, the Gauss–Seidel method, also known as the Liebmann method or the method of successive displacement, is an iterative method used to solve a system of linear equations.
Collaboration of Amir Kapkaev and Daria Kitsenko @dkicenko

A few ideas what should be added to Geometry

• Check if point is on a segment or plane
• Check if lines or planes are parallel or intersecting or perpendicular
• Distance between parallel lines or planes
• Distance from point or line to plane
• Check if points from array are on the same line or plane

I'm not entirely sure how it is supposed to work, but currently plotter.set_scale appears to do nothing

Code sample to reproduce:

def test_set_scale
  image_params = {width: 100, height: 200}

  draw_rectangle = -> (image_params, scale) {
    plotter = Image.new(image_params[:width], image_params[:height])
    plotter.set_scale(scale)
    plotter.rectangle(Point.new(20, 30), 50, 60, color('black @ 0.5'))
    temp_name = self.get_temp_name
    plotter.export(temp_name)
    temp_name
  }

  refute FileUtils.compare_file(
    draw_rectangle.call(image_params, 1),
    draw_rectangle.call(image_params, 10))
end

It's probably somehow related to following warnings:

silicium/lib/plotter.rb:251: warning: assigned but unused variable - mul
silicium/lib/plotter.rb:155: warning: assigned but unused variable - mul

Binary search tree with restrictions

Скриптом в travis для ruby является rake, а для rake у нас

The deploy steps are skipped if the build is broken.

Т.е. смысла в прогоне тестов снова перед деплоем не вижу. Или я что-то проморгал?

The Karatsuba algorithm is a fast multiplication algorithm. It reduces the multiplication of two n-digit numbers to at most n^(1.58) single-digit multiplications in general. It is therefore faster than the traditional algorithm, which requires n^(2) single-digit products.

https://en.wikipedia.org/wiki/Strongly_connected_component
Contributing along with @katerineN

Ruby 2D Installation Errors

Couldn't find packages needed by Ruby 2D.
Install the following packages using apt and try again:
libsdl2-dev libsdl2-image-dev libsdl2-mixer-dev libsdl2-ttf-dev

See ruby2d.com for additional help.

how to install this packages ?

Topological sort or topological ordering of a directed graph is a linear ordering of its vertices such that for every directed edge uv from vertex u to vertex v, u comes before v in the ordering.

In collaboration with @Aelina29

Methods for solving systems of linear algebraic equations
project members: Sikora Nikita, Flyagin Ivan, Artyom Pakhomov

в паре с @aboyk-wq