I really liked this article you posted @Dan. Very informative.
I think this article supports the idea that Misty can best infer a person’s emotions by collecting and analyzing over time information about each specific person only. This within person method can be used simultaneously on multiple individuals. I think this approach has been mentioned previously in one or more of these posts and/or accompanying articles…
In fact it might be interesting to program Misty to ask questions about the mood of each person in her household on a semi-regular basis (e.g., can you rate how happy you are right now, using a 1 - 10 scale; the scale would have been previously defined). I think this idea would relate to @Terrainpark two posts, among others.
Another thought. Vector, Misty’s upcoming “companion”, is supposed to have tons of personality. In fact I think that Vector’s current ratings on his Emotion Engine are available for inspection at any time. Could Misty be trained to recognize Vector’s moods to a reasonably accurate extent? Could be an interesting project on the way to having Misty sense human emotions.