spec_coeff {EconGeo}

Compute the Hoover coefficient of specialization from regions - industries matrices

Description

This function computes the Hoover coefficient of specialization from regions - industries matrices. The higher the coefficient, the greater the regional specialization. This index is closely related to the Krugman specialisation index.

Usage

spec_coeff(mat)

Arguments

mat

An incidence matrix with regions in rows and industries in columns

Value

A vector representing the Hoover coefficient of specialization for each region. The values in the vector indicate the degree of regional specialization, with higher values indicating greater specialization.

Author(s)

Pierre-Alexandre Balland [e-mail]

References

Hoover, E.M. and Giarratani, F. (1985) An Introduction to Regional Economics. 3rd edition. New York: Alfred A. Knopf (see table 9-4 in particular)

See Also

krugman_index

Examples

## generate a region - industry matrix
set.seed(31)
mat <- matrix(sample(0:100, 20, replace = TRUE), ncol = 4)
rownames(mat) <- c("R1", "R2", "R3", "R4", "R5")
colnames(mat) <- c("I1", "I2", "I3", "I4")

## run the function
spec_coeff(mat)