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➡️ Как batch normalization и dropout связаны с предположением о независимых и одинаково распределённых (i.i.d.) данных

Batch normalization рассчитывает среднее и дисперсию по мини-батчу, предполагая, что данные в нём отражают общее распределение. Если данные в батче не являются i.i.d. (например, временные зависимости или перекос по классам), то оценки могут быть неточными.

Dropout случайно отключает нейроны, предполагая независимость примеров между собой. При сильной корреляции в данных dropout может всё ещё помогать как регуляризация, но эффективность зависит от характера зависимости между примерами.

Библиотека собеса по Data Science

Библиотека собеса по Data Science | вопросы с собеседований
➡️ Как batch normalization и dropout связаны с предположением о независимых и одинаково распределённых (i.i.d.) данных

Batch normalization рассчитывает среднее и дисперсию по мини-батчу, предполагая, что данные в нём отражают общее распределение. Если данные в батче не являются i.i.d. (например, временные зависимости или перекос по классам), то оценки могут быть неточными.

Dropout случайно отключает нейроны, предполагая независимость примеров между собой. При сильной корреляции в данных dropout может всё ещё помогать как регуляризация, но эффективность зависит от характера зависимости между примерами.

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Some messages aren’t supposed to last forever. There are some Telegram groups and conversations where it’s best if messages are automatically deleted in a day or a week. Here’s how to auto-delete messages in any Telegram chat. You can enable the auto-delete feature on a per-chat basis. It works for both one-on-one conversations and group chats. Previously, you needed to use the Secret Chat feature to automatically delete messages after a set time. At the time of writing, you can choose to automatically delete messages after a day or a week. Telegram starts the timer once they are sent, not after they are read. This won’t affect the messages that were sent before enabling the feature.

➡️ Как batch normalization и dropout связаны с предположением о независимых и одинаково распределённых (i.i.d.) данных

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