45 lines
1015 B
Go
45 lines
1015 B
Go
package lrls
|
|
|
|
import (
|
|
"errors"
|
|
"log"
|
|
)
|
|
|
|
const (
|
|
methodExplicit = iota
|
|
methodRecursive
|
|
)
|
|
|
|
// Estimate runs the selected method to estimate parameters of ARX model,
|
|
// returns them and the error of the estimate. valid estimation method values
|
|
// are 0 for explicit and 1 for recursive.
|
|
// the function returns [][]float64 of parameter estimates, ([]float64 of error
|
|
// values, nil for error) on happy path, (nil, nil, err) otherwise.
|
|
func Estimate(eMethod int, u, y []float64) ([][]float64, []float64, error) {
|
|
if eMethod < 0 || eMethod > 1 {
|
|
log.Printf("error: estimation method needs to be from the set {0, 1}, got: %d", eMethod)
|
|
|
|
return nil, nil, errors.New("ErrInvalidMethod")
|
|
}
|
|
|
|
method := eMethod
|
|
estimates := make([][]float64, 0)
|
|
errs := make([]float64, 0)
|
|
|
|
var err error
|
|
|
|
switch method {
|
|
case methodExplicit:
|
|
estimates, errs, err = explicit(u, y)
|
|
|
|
case methodRecursive:
|
|
estimates, errs, err = recursive(u, y)
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
return estimates, errs, nil
|
|
}
|