Given a square reciprocal-symmetric *ratio* matrix from an Analytic
Hierarchy Process, calculate the vector of weights using the using the
Pairwise Comparison Method (Saaty 1987, Saaty 1996, Malczewski 1999)

compute_weights(x)

## Arguments

x |
matrix of pair-wise assessment of relative importance of risk
factors. |

## Value

numeric vector of weights

## References

Saaty, R. W. (1987). The analytic hierarchy process--what it is and how it
is used. Mathematical Modelling 9 (3-5), 161-176.

Saaty, T. L. (1996). Multicriteria decision making : the analytic hierarchy
process : planning, priority setting, resource allocation. RWS
Publications.

Malczewski J. GIS and multicriteria decision analysis. Inc New York: John
Wiley & Sons; 1999.

## Examples

#> [1] 0.2 0.2 0.2 0.2 0.2