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And now, I want to introduce other lecturers of this course.

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Alexander, Dmitry, Mikhail, and Marios.

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Mikhail is aka Cassanova,

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the person who reached the very top of competitive data science.

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I will tell you a couple of thoughts about the origins of the course.

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In year 2014, we started our win in data science by joining competitions.

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We've been meeting every week and discussing the past competitions, solutions,

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ideas and tweaks what worked and what did not,

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this exchange of knowledge and experience helped us

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to learn quickly from each other and improve our skills.

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Initially our community was small,

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but over time more and more people were joining.

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From the format of groups of discussion.

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We moved on to the format of well organized meetings.

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Where a speaker makes an overview of his approach and ideas in front of 50 people.

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These meetings are called machine learning trainings.

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Now with the help and support of Yandex and get a hundred of participants.

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Thus we started from zero and learned everything by hard work and collaboration.

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We had an excellent teacher,

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Alexander D'yakonov who was top one on Kaggle,

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he took the course on critical data analysis.

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In Moscow state university and there we're grateful to him.

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At some point we started to share our knowledge with

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other people and some of us even started to read lectures at the university.

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So now we have decided to summarize everything and make it available for everyone.

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Together. We've finished and procesed in about 20 different competitions

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only on Kaggle and just as many on other not so famous platforms.

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All of us have a tremendous amount of skill and experience in

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competitive data science and now we want to share this experience with you.

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For all of us,

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competitive data science opened a number of opportunities

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as the competitions we took part were dedicated to a large variety of tasks.

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Mikhail works in e-commerce.

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Alexander builds predictive model for taxi services,

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Dmitri works with financial data,

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Mario develops machinery learning frameworks and I am a deep learning researcher.

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Competitions, without a doubt,

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became a stepping stone for our careers and believe me,

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good comparative record will bring success to you as well.

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We hope you will find something interesting in this course and wish you good luck.