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#книга Simovici D. A. CLUSTERING: Theoretical and Practical Aspects. – World Scientific, 2021. Неплохая книга по кластеризации - для любителей жёсткой теории, сначала даётся большой математический обзор: ЧУМ, энтропия, выпуклые множества, гиперграфы, мультимножества (выше был пост про обобщённую энтропию - там рисунки из этой книги), потом уже разбираются алгоритмы кластеризации. Много теорем с доказательствами. Примеры кода на python и R (тут на чём удобнее, на том автор и писал). В приложении опять много математики: спектральные функции, проблема NP-полноты и т.п. Из минусов: нет как примеров практических кейсов кластеризации, так и каких-то советов для практиков.
#книга Simovici D. A. CLUSTERING: Theoretical and Practical Aspects. – World Scientific, 2021. Неплохая книга по кластеризации - для любителей жёсткой теории, сначала даётся большой математический обзор: ЧУМ, энтропия, выпуклые множества, гиперграфы, мультимножества (выше был пост про обобщённую энтропию - там рисунки из этой книги), потом уже разбираются алгоритмы кластеризации. Много теорем с доказательствами. Примеры кода на python и R (тут на чём удобнее, на том автор и писал). В приложении опять много математики: спектральные функции, проблема NP-полноты и т.п. Из минусов: нет как примеров практических кейсов кластеризации, так и каких-то советов для практиков.
"And that set off kind of a battle royale for control of the platform that Durov eventually lost," said Nathalie Maréchal of the Washington advocacy group Ranking Digital Rights. 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. As a result, the pandemic saw many newcomers to Telegram, including prominent anti-vaccine activists who used the app's hands-off approach to share false information on shots, a study from the Institute for Strategic Dialogue shows. Ukrainian forces have since put up a strong resistance to the Russian troops amid the war that has left hundreds of Ukrainian civilians, including children, dead, according to the United Nations. Ukrainian and international officials have accused Russia of targeting civilian populations with shelling and bombardments. What distinguishes the app from competitors is its use of what's known as channels: Public or private feeds of photos and videos that can be set up by one person or an organization. The channels have become popular with on-the-ground journalists, aid workers and Ukrainian President Volodymyr Zelenskyy, who broadcasts on a Telegram channel. The channels can be followed by an unlimited number of people. Unlike Facebook, Twitter and other popular social networks, there is no advertising on Telegram and the flow of information is not driven by an algorithm.
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