Table 2 The type of factor interaction expression
From: Spatio-temporal distribution of tuberculosis and the effects of environmental factors in China
Formula | Interaction |
|---|---|
q(x, y) < Min(q(x),q(y)) | Weaken, nonlinear |
Min(q(x), q(y)) < q(x, y) < Max(q(x),q(y)) | Weaken, unilateral |
q(x, y) > Max(q(x),q(y)) | Enhance, bi-linear |
q(x, y) = q(x) + q(y) | Independent |
q(x, y) > q(x) + q(y) | Enhance, nonlinear |