R/f_interface_setstaticcovariates.R
SetStaticCovariates.RdAdd static covariate data to an existing data object of class clv.data.
The returned object then can be used to fit models with static covariates.
No covariate data can be added to a clv data object which already has any covariate set.
At least 1 covariate is needed for both processes and no categorical covariate may be of only a single category.
SetStaticCovariates(
clv.data,
data.cov.life,
data.cov.trans,
names.cov.life,
names.cov.trans,
name.id = "Id"
)CLV data object to add the covariates data to.
Static covariate data as data.frame or data.table for the lifetime process.
Static covariate data as data.frame or data.table for the transaction process.
Vector with names of the columns in data.cov.life that contain the covariates.
Vector with names of the columns in data.cov.trans that contain the covariates.
Name of the column to find the Id data for both, data.cov.life and data.cov.trans.
An object of class clv.data.static.covariates.
See the class definition clv.data.static.covariates
for more details about the returned object.
data.cov.life and data.cov.trans are data.frames or data.tables that
each contain exactly one single row of covariate data for every customer appearing in the
transaction data. Covariates of class character or factor are converted
to k-1 numeric dummy variables.
# \donttest{
data("apparelTrans")
data("apparelStaticCov")
# Create a clv data object without covariates
clv.data.apparel <- clvdata(apparelTrans, time.unit="w",
date.format="ymd")
# Add static covariate data
clv.data.apparel.cov <-
SetStaticCovariates(clv.data.apparel,
data.cov.life = apparelStaticCov,
names.cov.life = "Gender",
data.cov.trans = apparelStaticCov,
names.cov.trans = "Gender",
name.id = "Id")
# more summary output
summary(clv.data.apparel.cov)
#> CLV Transaction Data with Static Covariates
#>
#> Time unit Weeks
#> Estimation length 79.8571 Weeks
#> Holdout length -
#>
#> Transaction Data Summary
#> Estimation Holdout Total
#> Number of customers - - 250
#> First Transaction in period 2005-01-03 - 2005-01-03
#> Last Transaction in period 2006-07-16 - 2006-07-16
#> Total # Transactions 2257 - 2257
#> Mean # Transactions per cust 9.028 - 9.028
#> (SD) 12.603 - 12.603
#> Mean Spending per Transaction 39.051 - 39.051
#> (SD) 50.503 - 50.503
#> Total Spending 88139.130 - 88139.130
#> Total # zero repeaters 65 - -
#> Percentage of zero repeaters 26.000 - -
#> Mean Interpurchase time 9.462 - 9.462
#> (SD) 12.266 - 12.266
#>
#> Covariates
#> Trans. Covariates Gender
#> # covs 1
#> Life. Covariates Gender
#> # covs 1
#>
# fit model with static covariates
pnbd(clv.data.apparel.cov)
#> Starting estimation...
#> Estimation finished!
#> Pareto/NBD with Static Covariates Model
#>
#> Call:
#> pnbd(clv.data = clv.data.apparel.cov)
#>
#> Coefficients:
#> r alpha s beta life.Gender
#> 1.1126 19.4120 0.4541 32.3265 1.0757
#> trans.Gender
#> 1.3096
#> KKT1: TRUE
#> KKT2: TRUE
#>
#> Used Options:
#> Correlation: FALSE
#> Constraints: FALSE
#> Regularization: FALSE
# }