1. A computer implemented method, comprising: computing a measure of goodness for each of at least two dimensions of a system linked to a first state of the system and a second state of the system; computing a difference measure for each of at least two dimensions linked to a studied system, the difference measures describing the differences of said at least two dimensions in relation to said first state and said second state; and displaying at least one of said measures of goodness and said difference measures in a graphical presentation for inferring the state of the studied system.