| CEquating | Equating item parameter only sampled by common item design.... |
| dgbeta | Generalized Beta Distribution Beta Distribution in min < x <... |
| dinvchi | The density of chi inv dist inverse chi distribution |
| epe | Equipercentile equating function of row score. This function... |
| estdist | Estimation of population distribution via EM algorithm. |
| Estep_girt_mg | Estep in girt. |
| Estep_irt | Estep in girt. |
| estGip | Generalized Item Response Theory parameter estimation |
| estheta | A estimation theta function. |
| estip | Estimate item parameter for binary0,1 response data. |
| estip2 | Unidimensional Item Response Theory parameter estimation |
| Flol | Calculate subject log likelihood. |
| gpcm | Graded Item Response Model, Generalized Percial Credit Model |
| gptheta | ICC of GIRT model |
| ifind | Item Fit indexes 'chi^2' and 'g^2' statistics |
| ifind2 | Item Fit indexes 'chi^2' and 'g^2' statistics that cut scores... |
| ifind3 | Item Fit indexes 'In Fit' and 'Out Fit' statistics, which is... |
| iif | Item Information Function for IRT 1~3PLM |
| irtfun2-package | irtfun2: Some useful functions for IRT |
| irt_ytx | IRT true score equating Reference: Kolen & Brennan (2014,... |
| LL | The log likelihood function of IRT 1~3PLM |
| LL_b | The log likelihood function of Bayesian IRT 1~3PLM |
| obscore_dist | A function calculates IRT observed score using recursion... |
| pfit | Person fit index: z_3 statistics |
| pitheta | MAP posterior information for IRT 1~3PLM |
| probability | a function generates conditional probability for fixed... |
| ptheta | The ICC of IRT 1~3PLM |
| Q3_stat | Item Fit indexes 'Q3'statistics. Diagnosis Local Item... |
| rinvchi | The random number of chi inv dist |
| sim_data_1 | Simulated item response data for 1PLM |
| sim_data_2 | Simulated item response data for 2PLM |
| sim_data_3 | Simulated item response data for 3PLM |
| sim_data_4 | Simulated multi group item response data for 2PLM |
| sim_dat_girt | Simulated item response data for GIRT model |
| sim_dat_st | Simulated multi group item response data for scaling test... |
| sim_eap | Estimated theta parameter under 2PLM. |
| sim_gen | Generate simulation binary data in IRT. |
| sim_param | Estimated 2PLM item parameter. |
| stat_pv | Calculate the imputation mean and variance |
| theta_pv | Sampling plausible values(PVs) based on rejection sampling. |
| tif | Test Information Function for IRT 1~3PLM |
| tif_auto | Item Information Function for IRT 1~3PLM |
| timer | Measure the time and display original message. |
| true_param | true 2PLM item parameter. |
| true_param_st | true 2PLM item parameter of 'sim_dat_st'. |
| tscore_dist | A function calculates IRT true score. |
| tse | Newton-Raphton method in IRT true score equating Reference:... |
