calculate_hedonic_imputationmatrix {cbsREPS} | R Documentation |
Calculate a matrix with hedonic imputation averages, re-estimated time series imputation averages and corresponding index series.
Description
Based on a hedonic model, a series of imputed values is calculated in below steps: 1: for every period average imputed prices are estimated with the 1st period as base period. 2: the above is repeated for each possible base period. This result in an equal number of series as the number of periods. 3: All series are re-estimated with a time series model (state space). This step is optionally skipped with a parameter (state_space_model = NULL) 4: the series imputed values are transformed into index series. This matrix can be used for an index calculations according to the HMTS method.
Usage
calculate_hedonic_imputationmatrix(
dataset,
period_variable,
dependent_variable,
continuous_variables,
categorical_variables,
periods_in_year,
number_of_observations = TRUE,
production_since = NULL,
number_preliminary_periods
)
Arguments
dataset |
table with data (does not need to be a selection of relevant variables) |
period_variable |
variable in the dataset with the period |
dependent_variable |
usually the sale price |
continuous_variables |
vector with quality-determining continues variables (numeric, no dummies) |
categorical_variables |
vector with categorical variables (also dummy) |
periods_in_year |
if month, then 12. If quarter, then 4, etc. (default = 4) |
number_of_observations |
number of observations per period (default = TRUE) |
production_since |
1 period in the format of the period_variable. See description above (default = NULL) |
number_preliminary_periods |
number of periods that the index is preliminary. Only works if production_since <> NULL. default = 3 |
Details
Parameter 'production_since': To simulate a series, where 1 period a time expires (as in production), a manual choice in the past is possible. Until this period, all periods are imputed. After that, 1 period is added.
Value
$Matrix_HMTS_index table with index series based on estimations with time series re-estimations $Matrix_HMTS table with estimated values based on time series re-estimations $Matrix_HMS_index table with index series based on estimations with the hedonic model $Matrix_HMS table with estimated values based on the hedonic model $Matrix_HMTS_analysis table with analysis values of the time series model per base period
Author(s)
Farley Ishaak