For visualization you can use colors instead of just a graph.

For example, red for F, blue for M and green for N. Now you have a gradient that can be different color based on your expression. Idk how dot products would work (i guess it’d mix the colors) but this sounds fun and you can have a little badge in your profiles and places

F [1,0,0]: 🟥 M [0,1,0]: 🟦 N [0,0,1]: 🟩

Person1 [0.5,0,0. .5]: 🟨 Person 2 [0.5,0.5,0]: 🟪

And so on