Дисперсия — ключевой статистический показатель, который помогает оценить изменчивость данных. Для дата-сайентистов она критична при:
В этой статье разберём, как правильно использовать дисперсию в Data Science и как она влияет на работу алгоритмов, например, в модели Random Forest.
👉 Читайте, чтобы понять, как измерять и учитывать дисперсию: https://proglib.io/sh/GDKYJQdAI2
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BY Библиотека собеса по Data Science | вопросы с собеседований
Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
If riding a bucking bronco is your idea of fun, you’re going to love what the stock market has in store. Consider this past week’s ride a preview.The week’s action didn’t look like much, if you didn’t know better. The Dow Jones Industrial Average rose 213.12 points or 0.6%, while the S&P 500 advanced 0.5%, and the Nasdaq Composite ended little changed.
Библиотека собеса по Data Science | вопросы с собеседований from br