default: Create an R environment that contains default values for root...
In thtrieu/edmsyn: Educational Data Synthesizer

Description Usage Arguments Value Author(s) Examples

Create an R environment that contains default values for root parameters

default(student.var = NULL, avg.success = NULL, time = NULL,
  S.st.var = NULL, L.st.var = NULL, bkt.slip.st.var = NULL,
  bkt.guess.st.var = NULL, min.ntree = NULL, min.depth = NULL,
  min.it.per.tree = NULL, per.item = NULL, bkt.mod = NULL,
  density = NULL, alpha.c = NULL, alpha.p = NULL, p.min = NULL,
  abi.mean = NULL, abi.sd = NULL, trans = NULL, ...)

`student.var`	variance of student expected success rate
`avg.success`	mean value of the response matrix
`time`	the number of time steps for sequential data
`S.st.var`	variance of student expected success rates of the skill matrix
`L.st.var`	variance of student expected success rates of Learning Transition matrix
`bkt.slip.st.var`	variance of expected values of students in Slip vector of BKT model
`bkt.guess.st.var`	variance of expected values of students in Guess vector of BKT model
`min.ntree`	minimum number of connected components of the partial order structure of items
`min.depth`	minimum depth of the connected components of the partial order structure of items
`min.it.per.tree`	minimum number of items per each connected component of the partial order structure
`per.item`	a boolean value indicates if the students can improve after taking each item
`bkt.mod`	a character string indicates which model governs the generating process for sequential data
`density`	a real value between 0 and 1, indicates the connection density of the partial order structure of items
`alpha.c`	parameter for learning by POKS model, see reference
`alpha.p`	parameter for learning by POKS model, see reference
`p.min`	p-value for interaction test while constructing POK structure
`abi.mean`	mean value of the student abilities vector
`abi.sd`	standard deviation of the student abilities vector
`trans`	a boolean value indicates if transitive links are allowed in the partial order structure of items

an environment containing all default values of the specified parameters

Hoang-Trieu trinh, thtrieu@apcs.vn

# Example: 
# Declare a context where there are 15 students and 20 items
p <- pars(students = 15, items = 20)
# Add information that the Partial Order Structure should have depth of 3, two connected components and no transitive links
p <- pars(p, min.depth = 3, max.depth = 3, min.ntree = 2, max.ntree = 2, trans = FALSE)
# Generate data to calculate the `po` parameter
poks.data <- gen("poks", p)
# Visualise the Partial Order Structure
v <- viz(poks.data$po)
# Print the analysed structure
print(v)