Когда данные со временем «плывут» (то есть меняется их распределение),
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1.
— Чтобы он отражал текущее состояние данных, а не прошлое.
2.
— Особенно в потоковых системах: метрики качества считаются по «живым» данным, а не по статичному отрезку.
3.
— Если обнаружили drift, стоит не просто дообучить модель, а пересобрать или адаптировать её с учётом новых данных.
⚠️ Подводный камень:
Библиотека собеса по Data Science
BY Библиотека собеса по Data Science | вопросы с собеседований
China’s stock markets are some of the largest in the world, with total market capitalization reaching RMB 79 trillion (US$12.2 trillion) in 2020. China’s stock markets are seen as a crucial tool for driving economic growth, in particular for financing the country’s rapidly growing high-tech sectors.Although traditionally closed off to overseas investors, China’s financial markets have gradually been loosening restrictions over the past couple of decades. At the same time, reforms have sought to make it easier for Chinese companies to list on onshore stock exchanges, and new programs have been launched in attempts to lure some of China’s most coveted overseas-listed companies back to the country.
The S&P 500 slumped 1.8% on Monday and Tuesday, thanks to China Evergrande, the Chinese property company that looks like it is ready to default on its more-than $300 billion in debt. Cries of the next Lehman Brothers—or maybe the next Silverado?—echoed through the canyons of Wall Street as investors prepared for the worst.
Библиотека собеса по Data Science | вопросы с собеседований from cn