"Three in a Boat, Poverty and Dogs," or how the Antiplagy seeks paraphrase

"Three in a Boat, Poverty and Dogs," or how the Antiplagy seeks paraphraseA new school year has come. The students received a schedule and began to think about
drunk girls-girls-guitars
future session. Writing coursework, diplomas, articles and dissertations is not far off. So, there is also an analysis of texts for the availability of borrowing, and verification reports, and other headache student and administrator pain. And hundreds of thousands of people (without jokes - we figured!) Already there is a natural question - how to deceive "Antiplagiarism". In our case, almost all methods of deception are somehow connected with distortions of the text. We have already ...
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Mikhail Bessmeltsev and his colleague developed new algorithms for vectorizing graphics

Mikhail Bessmeltsev and his colleague developed new algorithms for vectorizing graphics  

From left to right: the original, framed field (frame field) and the final result. Based on the noisy bitmap image in grayscale, a framed field is calculated, aligned along the lines of the picture. On sharp angles of the X- and T-intersection type, vectors are superimposed in both directions. Then, the topology of the drawing is extracted from this field - and the final generation of vector curves
is made.

 
 
Vectorization of images is a fundamental component of the workflow in graphic design, engineering and computer animation. It converts drawings of artists and designers into smooth curves, which ...
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Optical trackers: ASEF and MOSSE

Optical trackers: ASEF and MOSSEOne of the important subtasks of video analytics is the tracking of objects on video. It is not so primitive that it was necessary to descend to the per-pixel level, but it is not so difficult to unambiguously require a multilayer neural network for solving. Tracking can be used as an end in itself, and as part of other algorithms:
 
 
 
Counting of unique people who entered a certain zone or crossed the border in frame
 
Identification of typical routes of cars in the parking lot and people in the store
 
Automatic rotation of the CCTV camera when the object is displaced
 
 
Even without looking ...
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The theory of happiness. The curse of the director and the damned printers

The theory of happiness. The curse of the director and the damned printers I continue to acquaint the readers of Khabra with the chapters from my book The Theory of Happiness with the subtitle "Mathematical Foundations of the Laws of Meanness". This is not yet published popular science book, very informally telling about how mathematics allows a new degree of awareness to look at the world and people's lives. It is for those who are interested in science and for those who are interested in life. And since our life is complex and, by and large, unpredictable, the emphasis in the book is mainly on the theory of probability and mathematical statistics. Here theorems are ...
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What is the importance of ??? = ??? + 1? How to explain it on the fingers?

The author of the answer to Quora is Michael Griffin, postdoc on mathematics
 
 
What is the importance of ??? = ??? + 1? How to explain it on the fingers? Senia Scheidwasser gave very good, simple answer to this question, I recommend reading this brief version. But there is a much more surprising story of the Monstrous Moonshine hypothesis mixed with McKay's equation: from Jack Daniel's whiskey to black holes and quantum gravity.
 
 
In this story, symmetries and mathematical "groups" are often mentioned, so let's start with what is meant by the group in mathematics. A group can be represented as a way to reorder a set of objects, preserving a certain structure. The operations ...
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The Matrix of Friendship. The oldest social graph for the youngest is

Then happened the first of September, the next academic year, candy flowers, tears of happiness, and that's it, and in the process of preparing for the lecture at the institute I came across very curious data . I watched that this could be done quickly and beautifully in GePhi , and came across the story of Johannes Delitsch (Johannes Delitsch). Delitzsch worked in Leipzig as a primary school teacher and collected in the 1880th academic year data on who is friends with his class. And this, along the way, is one of the first documented social graphs.
 
The Matrix of Friendship. The oldest social graph for the youngest is
...
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Python and DataScience: we study the possibilities of the universal library Numpy

Python and DataScience: we study the possibilities of the universal library Numpy  
 
From the translator: this is a translation of the material of Rakshita Vasudeva, who has been studying DataScience for a long time and using Python in it. The author tells about the powerful library Numpy, which allows you to realize many possibilities of machine learning and working with large data.
 
 
Numpy is a mathematical library for Python. It allows you to perform all kinds of calculations efficiently and quickly. It greatly expands the functionality of Python with the special solutions that it applies. This article describes the basic capabilities of Numpy, and this is only the first part; ...
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How much do the data for learning the model (not) look like a test sample?

Consider one of the scenarios in which your model of machine learning can be useless.
 
 
There is a saying: "Do not compare apples with oranges" . But what if you want to compare one set of apples with oranges with another, but the distribution of fruit in the two sets is different? Can you work with the data? And how will you do it?
 
 
How much do the data for learning the model (not) look like a test sample? dataset from the competition at Kaggle.
 
 

Step 1: Preparing the data for


 
First of all, we will perform a number of standard steps: clean, fill in blanks, perform label encoding for categorical features. For the given dataset, the step was not ...[/h]
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The Hungarian algorithm, or how mathematics helps in the allocation of assignments

Hello friends! In this article, I would like to tell you about an interesting algorithm from the discipline "Investigation of Operations" namely, about the Hungarian method and how to solve the assignment problem with it. I will touch upon the theory in which cases and for what purposes this algorithm is applicable, I will stage it out in a fictitious example, and I will share my modest sketch of the code for its implementation in R. Let's begin!
 
 
The Hungarian algorithm, or how mathematics helps in the allocation of assignments
 
Stormed ...
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Thirty-six degrees of beauty

Grid coordinate systems in which the plane is divided into the same symmetrical elements - into squares, triangles, hexagons, are sufficiently known. They correspond to square, triangular, hexagonal symmetry. But still there is a tenfold symmetry.
 
In it, the plane is not divided into decagonals, instead all the lines are located at angles of multiples of 36 °. Coordinates in this system can be written as integers, two integers per horizontal and vertical direction.
 
Thirty-six degrees of beauty
 
I'll tell you how to draw this.
 
 
 
The number of unit vectors in all directions in this frame is ten. If we take into account the ...
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