| d2IRF | Second derivative of 2PL IRF in theta. |
| d2l_full | Hessian of the log-likelihood for a combined assessment. |
| d2logL | Second derviative of log-likelihood of 2PL, in theta. |
| d2lp | Hessian of the log of the prior distribution for a combined... |
| d2l_RSC | Hessian of log-likelihood of one-parameter RSC model. |
| d2_RSC | Second derivatives of the IRF of the one-parameter RSC model. |
| data_gen | Generate data from the one-parameter RSC model. |
| dIRF | First derivative of 2PL IRF in theta. |
| dJ | Derviative of J. |
| dl_full | Gradient of the log-likelihood of a combined assessment. |
| dlogL | First derviative of log-likelihood of 2PL, in theta. |
| dlp | Gradient of the log of the prior distribution for a combined... |
| dl_RSC | Gradient of log-likelihood of one-parameter RSC model. |
| d_RSC | First derivatives of the IRF of the one-parameter RSC model. |
| est_2PL | Estimation of latent trait for 2PL model. |
| format_NA | Transforms one matrix/data.frame have the same NA entries as... |
| format_resp | Formats a data.frame to have the same variables (column... |
| Info | Test information function for 2PL IRF. |
| Info_u | Item info: u. |
| Info_w | Item info: w |
| IRF | The IRF for the two parameter logistic model. |
| J | Numerator of penalty used in WML. |
| l_full | Log-likelihood of a combined assessment. |
| l_full_sum | Log-likelihood of a combined assessment, with sum option. |
| logL | Log-likelihood of 2PL, conditional on theta. |
| lp | Log of prior distribution for a combined assessment. |
| l_RSC | Log-likelihood of the one-parameter RSC model. |
| M | Multiplier for first deriviative of log-likelihood of 2PL. |
| Mstar | Mutiplier term for first deriviative of log-likelihood of... |
| N | Multiplier for second deriviative of log-likelihood of 2PL. |
| Nstar | Multiplier term for second deriviative of log-likelihood of... |
| RSC | Estimation of latent traits and the one-parameter RSC model... |
| rsc2 | Estimation of the one-parameter RSC model, with latent traits... |
| RSC_IRF | The IRF of the one-parameter RSC model. |
| sim_2PL | Simulate item responses from the 2PL. |
| sim_RSC | Simulate item responses from the one-parameter RSC model. |
| theta_gen | Generates or replicates values of latent trait |
| var_rsc | Computes variance of latent traits and the one-parameter RSC... |
| WML_SE | Standard error of WML. |
