Determine the valence intensity of the following tweet, considering the mental state of the author. Assign a real number between 0 and 1, where 0 denotes extremely negative and 1 denotes extremely positive.
Tweet: me taking a picture by myself: *awkward smile*\nme on picture day: *awkward smile*\nconclusion: stop smiling ;'(\n#pictureday2016 #smile #ornot
0.500