| LeastSquaresBuilder | LeastSquaresBuilder. checker(ConvergenceChecker<LeastSquaresProblem.Evaluation> newChecker) | Configure the convergence checker. | 
| LeastSquaresBuilder | LeastSquaresBuilder. checkerPair(ConvergenceChecker<PointVectorValuePair> newChecker) | Configure the convergence checker. | 
| LeastSquaresBuilder | LeastSquaresBuilder. lazyEvaluation(boolean newValue) | Configure whether evaluation will be lazy or not. | 
| LeastSquaresBuilder | LeastSquaresBuilder. maxEvaluations(int newMaxEvaluations) | Configure the max evaluations. | 
| LeastSquaresBuilder | LeastSquaresBuilder. maxIterations(int newMaxIterations) | Configure the max iterations. | 
| LeastSquaresBuilder | LeastSquaresBuilder. model(MultivariateVectorFunction value,
     MultivariateMatrixFunction jacobian) | Configure the model function. | 
| LeastSquaresBuilder | LeastSquaresBuilder. model(MultivariateJacobianFunction newModel) | Configure the model function. | 
| LeastSquaresBuilder | LeastSquaresBuilder. parameterValidator(ParameterValidator newValidator) | Configure the validator of the model parameters. | 
| LeastSquaresBuilder | LeastSquaresBuilder. start(double[] newStart) | Configure the initial guess. | 
| LeastSquaresBuilder | LeastSquaresBuilder. start(RealVector newStart) | Configure the initial guess. | 
| LeastSquaresBuilder | LeastSquaresBuilder. target(double[] newTarget) | Configure the observed data. | 
| LeastSquaresBuilder | LeastSquaresBuilder. target(RealVector newTarget) | Configure the observed data. | 
| LeastSquaresBuilder | LeastSquaresBuilder. weight(RealMatrix newWeight) | Configure the weight matrix. |