Оба метода помогают выбрать оптимальное количество кластеров (k), но делают это по-разному:
— Основан на
— При увеличении количества кластеров
— Нужно найти точку, в которой снижение становится
— Минус: нахождение локтя
— Для каждой точки рассчитывается
— Средняя оценка по всем точкам показывает
— Позволяет интерпретировать
— Часто даёт
— Метод локтя
— Метод силуэта — более
Библиотека собеса по Data Science
BY Библиотека собеса по Data Science | вопросы с собеседований
Durov said on his Telegram channel today that the two and a half year blockchain and crypto project has been put to sleep. Ironically, after leaving Russia because the government wanted his encryption keys to his social media firm, Durov’s cryptocurrency idea lost steam because of a U.S. court. “The technology we created allowed for an open, free, decentralized exchange of value and ideas. TON had the potential to revolutionize how people store and transfer funds and information,” he wrote on his channel. “Unfortunately, a U.S. court stopped TON from happening.”
Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.
Библиотека собеса по Data Science | вопросы с собеседований from ru