predict.blackbt {basicspace} | R Documentation |
predict.blackbt
reads an blackbt
object and uses the estimates to generate a matrix of predicted values.
## S3 method for class 'blackbt' predict(object, dims=1, ...)
object |
A |
dims |
Number of dimensions used in prediction. Must be equal to or less than number of dimensions used in estimation. |
... |
Ignored. |
A matrix of predicted values generated from the parameters estimated from a blackbt
object.
Keith Poole ktpoole@uga.edu
Howard Rosenthal hr31@nyu.edu
Jeffrey Lewis jblewis@ucla.edu
James Lo lojames@usc.edu
Royce Carroll rcarroll@rice.edu
'blackbox_transpose', 'LC1980', 'LC1980_bbt'
## Estimate blackbt object from example and call predict function data(LC1980) data(LC1980_bbt) prediction <- predict.blackbt(LC1980_bbt, dims=2) ## Examine predicted vs. observed values for first 10 respondents ## First column of LC1980 are self-placements, which are excluded LC1980[1:10,-1] prediction[1:10,] ## Check correlation across all predicted vs. observed, excluding missing values prediction[which(LC1980[,-1] %in% c(0,8,9))] <- NA cor(as.numeric(prediction), as.numeric(LC1980[,-1]), use="pairwise.complete")