Task: Analyze the sentiment intensity or valence level exhibited in the tweet, assigning a score on a continuum from 0 (extreme negativity) to 1 (extreme positivity), capturing the emotional context conveyed.
Tweet: wow, i really can't believe four years already went by. four years. jeez. we miss you big guy #4yearswithoutcory #corymonteith #glee
Intensity score: 