1 Subjects: “...models...”

2 Subjects: “...structural equation model...”

3 Subjects: “...game model...”

4 Subjects: “...model...”

5 Subjects: “...Gaussian Mixture Models (GMM)...”

6 Subjects: “...economic models...”

7 Subjects: “...maturity model...”

8 Subjects: “...hidden Markov model...”

9 Subjects: “...multi-theory model...”