Simon Willison’s Weblog

Hey Siri: An On-device DNN-powered Voice Trigger for Apple’s Personal Assistant (via) “The “Hey Siri” detector uses a Deep Neural Network (DNN) to convert the acoustic pattern of your voice at each instant into a probability distribution over speech sounds. It then uses a temporal integration process to compute a confidence score that the phrase you uttered was “Hey Siri”. If the score is high enough, Siri wakes up.” # 20th October 2017, 3:48 am

How Dopplr learns. Dopplr uses global and personal trip histories to disambiguate place names, and your friends’ schedules to help disambiguate dates in airline confirmation emails. # 23rd July 2008, 4:17 pm