How might an AI algorithm decide or predict how much you liked what music you listened to on Alexa Music, Spotify, or Pandora? (Multiple Answers)

• by monitoring your facial expression and iris scan
• by how many of your virtual friends on facebook also like the same music
• by your first name
• by your calculated personality profile prediction
• by how much you replay the music
• by listening to your ultrasonic frequency while listening to music
• by your height, weight, and gender
• by how long you replay the music
• by monitoring the impact of the music's pitch, rhythm and harmony to your neural (brain activity) along with your heart, sweat and electrical response
• by just asking you after you listened to the music