Psychometric models of small group collaborations

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. |

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