مدل ARIMA «میانگین متحرک خودهمبسته یکپارچه» (Autoregressive Integrated Moving Average | ARIMA) ابزاری مهم در تحلیل «سری‌های زمانی» (Time Series) به منظور پیش‌بینی قیمت‌های آینده یک متغیر بر اساس مقدار کنونی آن به شمار می‌آید. هدف ARIMA شناسایی ماهیت روابط بین باقیمانده‌ها است که مدلی با درجه خاصی از قدرت پیش‌بینی را فراهم می‌کند.
در مثال این پست، یک مدل ARIMA بر اساس داده های شرکت گوگل از سال 2018 تا پایان 2020 اجرا شده است.
مدل ARIMA «میانگین متحرک خودهمبسته یکپارچه» (Autoregressive Integrated Moving Average | ARIMA) ابزاری مهم در تحلیل «سری‌های زمانی» (Time Series) به منظور پیش‌بینی قیمت‌های آینده یک متغیر بر اساس مقدار کنونی آن به شمار می‌آید. هدف ARIMA شناسایی ماهیت روابط بین باقیمانده‌ها است که مدلی با درجه خاصی از قدرت پیش‌بینی را فراهم می‌کند.
در مثال این پست، یک مدل ARIMA بر اساس داده های شرکت گوگل از سال 2018 تا پایان 2020 اجرا شده است.
Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.
Telegram auto-delete message, expiring invites, and more
elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.
