Compute the total causal effect between two variables from an adjacency matrix

Returns the sum of all path effects enumerated by find_all_paths(). Returns 0 if no path exists.

Usage

calculate_total_effect(adjacency_matrix, from_index, to_index)

Arguments

adjacency_matrix

Adjacency matrix (n x n). B[i,j] is the coefficient of j -> i.

from_index

Index of the cause variable (1-based)

to_index

Index of the effect variable (1-based)

Value

Total causal effect (scalar)