oracle: Find Answer Profile that Minimizes Bias
In catSurv: Computerized Adaptive Testing for Survey Research

oracle

R Documentation

Find Answer Profile that Minimizes Bias

Description

Generating all possible combinations of length n from a response profile to determine the possible response profile best able to estimate the true value of theta.

Usage

## S4 method for signature 'Cat'
oracle(catObj, theta, responses, approx = FALSE, parallel = FALSE)

Arguments

`catObj`	An object of class `Cat`
`theta`	A numeric representing the true position on the latent trait.
`responses`	A vector representing the respondent's full answer profile.
`approx`	If TRUE, uses a subset of 1000 potential response profiles
`parallel`	If TRUE, computes in parallel

Details

lengthThreshold slot should specify how many questions to ask. Note this function uses the estimateTheta method specified in the supplied cat object

Value

A data.frame where the first column is the user-supplied true value of theta, the second column is the best possible theta estimate given n questions are asked, and the remaining columns are the answer profile leading to the best possible theta estimation.