Table 1 Interaction between explanatory variables.

From: Exploring the spatiotemporal evolution mechanism of rural e-commerce: insights from the experience of Taobao towns in China

Judgment basis

Interaction

q(x1 ∩ x2) < Min(q(x1), (qx2))

Weaken, nonlinear

Min(q(x1), q(x2)) < Max(q(x1), q(x2))

Weaken, uni-factor

q(x1 ∩ x2) > Max(q(x1), q(x2))

Enhance, bi-factor

q(x1 ∩ x2) = q(x1) + q(x2)

Independent

q(x1 ∩ x2) > q(x1) + q(x2)

Enhance, nonlinear

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