$,Item-method           Get slots from an 'Item-class' object.
$,Itempool-method       Get slots of the an 'Item-class' object.
$,Testlet-method        Access slots of a 'Testlet-class' object
$<-,Item-method         Set values to parameters or components of
                        'Item-class' object
$<-,Itempool-method     Set values to parameters or components of
                        'Item' class.
$<-,Testlet-method      Set values to parameters or components of
                        'Item' class.
Item-class              An S4 class to represent an Item
Itempool-class          An S4 class to represent an Itempool
Testlet-class           An S4 class to represent a Testlet
add_misc                Add or change a named value to 'misc' slot of
                        an 'Item-class', 'Itempool-class' or
                        'Testlet-class' object.
as.Itempool             Coerce a given object to 'Itempool-class'
                        object
as.data.frame.Itempool
                        Convert an 'Itempool-class' object into a
                        'data.frame'.
as.list.Itempool        This function converts Itempool objects to a
                        list object
biserial                Calculate biserial correlation
c,Item-method           Concatenate 'Item', 'Itempool' or 'Testlet'
                        objects and return an Itempool object.
calculate_exposure_rates
                        Calculate exposure rate of items for CAT
calculate_overlap_rates
                        Calculate overlap rate of items for CAT
cat_sim                 Computerized Adaptive Test (CAT) Simulation
cat_sim_fast            Computerized Adaptive Test (CAT) Simulation
                        (Parallel Computing)
create_cat_design       Computerized Adaptive Test (CAT) Simulation
                        Design
dif                     Evaluate Differential Item Functioning (DIF) of
                        a test
distractor_analysis     Distractor Analysis Function
est_ability             Ability Estimation of an examinee
est_bilog               Run BILOG-MG in batch mode
generate_ip             Generate a random 'Itempool' object
generate_item           Generate a random Item object
generate_testlet        Generate a random Testlet object
get_cat_administered_items
                        Get administered items from a CAT output
get_cat_response_data   Extracts the response data of CAT output.
get_max_possible_total_score
                        Calculate the maximum score of a set of items
info                    Calculates the information of an "Item" object
ipd                     Item Parameter Drift
irt                     A Collection of Item Response Theory (IRT) and
                        Computerized Adaptive Testing (CAT) Functions
is.Item                 Check whether an object is an 'Item-class'
item                    Create an 'Item' object
item_analysis           Item Analysis Function
item_fit                Calculate item-fit indices
itempool                Create an 'Itempool' object
length,Itempool-method
                        Find the length of an 'Itempool-class' object
person_fit              Calculate person-fit indices
plot.Item               Plot Item Characteristic Curve of an 'Item'
                        object
plot.Itempool           Plot Item Characteristic Curves or Test
                        Characteristic Curve of an 'Itempool' object
plot_distractor_icc     Plot Empirical Item or Test characteristic
                        curve
plot_empirical_icc      Plot Empirical Item or Test characteristic
                        curve
plot_info               Plot Item Information Function
plot_resp_loglik        Plot the Log-Likelihood of a response string
prob                    Calculate the probability of a correct response
resp_lik                Likelihood of a response string
resp_loglik             Log-likelihood of a Response String
rsss                    Convert raw score to scale score and vice versa
sim_resp                Generate responses for a given model
summary.cat_output      Summarizes the raw output of cat_sim
testlet                 Creates a 'Testlet-class' object
