dist_by_closeness.RdDistance by Closeness
dist_by_closeness(mat)
| mat | A numeric matrix where the distance is calculated by rows. |
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For two rows in the matrix, assume x_1, x_2, ..., x_n1 are the column index of none-zero values in row 1 and y_1, y_2, ... y_n2 are the column index for non-zero values in row 2, the distance between the two rows based on the closeness is calculated as:
d_closeness = sum_i sum_j(|x_i - y_j|) / (n_1*n_2)
A dist object.
x1 = c(0, 0, 0, 0, 1, 1, 1, 0, 0, 0) x2 = c(0, 0, 0, 1, 1, 1, 0, 0, 0, 0) x3 = c(1, 0, 0, 0, 1, 1, 0, 0, 0, 0) m = rbind(x1, x2, x3) dist(m)#> x1 x2 #> x2 1.414214 #> x3 1.414214 1.414214dist_by_closeness(m)#> 1 2 #> 2 1.222222 #> 3 2.222222 1.888889