Obtain Coefficients from Scaled SVD of HFD Data

Obtain time series of SVD coefficients from a scaled SVD of data from the Human Fertility Database. The coefficents are a scaled version of the \(U\) matrix from the SVD.

Usage

coef_hfd(data, n_comp = 5, eps = 1e-05)

Arguments

data

A data frame containing HFD data.

n_comp

Number of SVD components to include in result. Default is 5.

eps

Floor for rates. Default is 0.00001.

Value

A tibble

Truncation and transformation

Rates below eps are shifted to eps, and all rates are log-transformed, before the SVD is applied.

See also

• data_ssvd_hfd()Put data from the Human Fertility Database into the format required by the ssvd() function in bage.

• tidy_hfd() Format data from the Human Fertility Database into a tidy data frame

Examples

coef_hfd(asfr_subset)
#> # A tibble: 3,815 × 4
#>    country  time component      coef
#>    <chr>   <int> <chr>         <dbl>
#>  1 AUT      1980 Component 1 -0.355 
#>  2 AUT      1981 Component 1 -0.275 
#>  3 AUT      1982 Component 1  0.0416
#>  4 AUT      1983 Component 1  0.176 
#>  5 AUT      1984 Component 1  0.285 
#>  6 AUT      1985 Component 1  0.471 
#>  7 AUT      1986 Component 1  0.134 
#>  8 AUT      1987 Component 1  0.191 
#>  9 AUT      1988 Component 1  0.515 
#> 10 AUT      1989 Component 1  0.472 
#> # ℹ 3,805 more rows