Perform Shadow Test Assembly (STA) for computerized adaptive testing.
STA(constraints, objective, solver = "Lpsolve", xmat = NULL,
xdir = NULL, xrhs = NULL, maximize = TRUE, mps = FALSE,
lp = FALSE, verbosity = -2, time_limit = 5, gap_limit = -1, ...)A list representing optimization constraints. Use loadConstraints for this.
A vector of objective values.
The type of solver. Accepts SYMPHONY, GUROBI, GLPK, LPSOLVE.
A matrix of additional constraint coefficients for any previously administered items.
A character vector with the directions for the constraints in xmat.
A vector of right-side values for the constraints in xmat.
If TRUE, treat as a maximization problem. Otherwise treat as a minimization problem.
Only used when solver is SYMPHONY. If TRUE, print an MPS representation of the problem for debugging purposes.
Only used when solver is SYMPHONY. If TRUE, print an LP representation of the problem for debugging purposes.
Verbosity level.
Time limit passed onto the solver.
Gap limit passed onto the solver.
Only used when solver is SYMPHONY. Additional parameters to be passed onto the solver.
A list containing the optimal solution and pertinent diagnostics.
van_der_linden_model_1998TestDesign
van_der_linden_optimal_1998TestDesign
van_der_linden_optimal_2000TestDesign
van_der_linden_linear_2005TestDesign