Когда вы выберете K-средние, а когда DBScan?
DBScan более устойчив к шуму.
DBScan лучше подходит, когда количество кластеров трудно угадать.
K-means имеет меньшую сложность, т. е. будет намного быстрее, особенно при большем количестве точек.
BY Библиотека собеса по Data Science | вопросы с собеседований
Bitcoin mining is the process of adding new transactions to the Bitcoin blockchain. It’s a tough job. People who choose to mine Bitcoin use a process called proof of work, deploying computers in a race to solve mathematical puzzles that verify transactions.To entice miners to keep racing to solve the puzzles and support the overall system, the Bitcoin code rewards miners with new Bitcoins. “This is how new coins are created” and new transactions are added to the blockchain, says Okoro.
For some time, Mr. Durov and a few dozen staffers had no fixed headquarters, but rather traveled the world, setting up shop in one city after another, he told the Journal in 2016. The company now has its operational base in Dubai, though it says it doesn’t keep servers there.Mr. Durov maintains a yearslong friendship from his VK days with actor and tech investor Jared Leto, with whom he shares an ascetic lifestyle that eschews meat and alcohol.
Библиотека собеса по Data Science | вопросы с собеседований from it