feedback {LoopAnalyst} | R Documentation |
Computes the qualitative feedback of a partially specified system; where qualitative means direction: increases, decreases, no change, or ambiguous.
feedback(C)
C |
A (-1, 0 1) square matrix. |
The supplied matrix is validated as a square (-1, 0, 1) matrix, and the sign-corrected product of system-spanning sets of disjunct loops is summed over all levels of feedback, and the result returned. Ambiguous results are returned as NA
.
-1, 0, 1, or NA
Alexis Dinno http://www.doyenne.com/LoopAnalyst/
Puccia, C. J. and Levins, R. (1986) Qualitative Modeling of Complex Systems: An Introduction to Loop Analysis and Time Averaging. Cambridge: Harvard University Press.
## compute the feedback of a system data(submatrix) feedback(submatrix)