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#термин
Как меняется значение термина со временем...

Сейчас термином cross-validation (перекрёстная проверка / скользящий контроль) называют практически любой способ "честной оценки её качества" (см. wiki). Более 20 лет назад под этим понимали, в основном, тестирование с равномерными разбиениям выборки:
- Leave-p-out cross-validation,
- Leave-one-out cross-validation,
- k-fold cross-validation.
А вот когда мы выборку делим на две части, на одной обучаемся, на другой контролируемся, называлось отложенным контролем (Holdout method) - видите, тут даже в названии нет "cross-validation".

И вот что написано на Wiki: "many sources instead classify holdout as a type of simple validation, rather than a simple or degenerate form of cross-validation".

На русской Wiki, кстати, вообще радикально отождествляют cross-validation = k-fold cross-validation (что соответствует старой терминологии).



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#термин
Как меняется значение термина со временем...

Сейчас термином cross-validation (перекрёстная проверка / скользящий контроль) называют практически любой способ "честной оценки её качества" (см. wiki). Более 20 лет назад под этим понимали, в основном, тестирование с равномерными разбиениям выборки:
- Leave-p-out cross-validation,
- Leave-one-out cross-validation,
- k-fold cross-validation.
А вот когда мы выборку делим на две части, на одной обучаемся, на другой контролируемся, называлось отложенным контролем (Holdout method) - видите, тут даже в названии нет "cross-validation".

И вот что написано на Wiki: "many sources instead classify holdout as a type of simple validation, rather than a simple or degenerate form of cross-validation".

На русской Wiki, кстати, вообще радикально отождествляют cross-validation = k-fold cross-validation (что соответствует старой терминологии).

BY Small Data Science for Russian Adventurers




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At the start of 2018, the company attempted to launch an Initial Coin Offering (ICO) which would enable it to enable payments (and earn the cash that comes from doing so). The initial signals were promising, especially given Telegram’s user base is already fairly crypto-savvy. It raised an initial tranche of cash – worth more than a billion dollars – to help develop the coin before opening sales to the public. Unfortunately, third-party sales of coins bought in those initial fundraising rounds raised the ire of the SEC, which brought the hammer down on the whole operation. In 2020, officials ordered Telegram to pay a fine of $18.5 million and hand back much of the cash that it had raised. "The result is on this photo: fiery 'greetings' to the invaders," the Security Service of Ukraine wrote alongside a photo showing several military vehicles among plumes of black smoke. At its heart, Telegram is little more than a messaging app like WhatsApp or Signal. But it also offers open channels that enable a single user, or a group of users, to communicate with large numbers in a method similar to a Twitter account. This has proven to be both a blessing and a curse for Telegram and its users, since these channels can be used for both good and ill. Right now, as Wired reports, the app is a key way for Ukrainians to receive updates from the government during the invasion. "He has to start being more proactive and to find a real solution to this situation, not stay in standby without interfering. It's a very irresponsible position from the owner of Telegram," she said. The channel appears to be part of the broader information war that has developed following Russia's invasion of Ukraine. The Kremlin has paid Russian TikTok influencers to push propaganda, according to a Vice News investigation, while ProPublica found that fake Russian fact check videos had been viewed over a million times on Telegram.
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