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models_actions.go
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models_actions.go
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package gotoml
import (
"fmt"
"log"
"math/rand"
)
// Actioner interface
type Actioner interface {
GetActionsQv() interface{}
GetActionQv(aid int) float64
PutActionQv(aid int, v float64)
TakeAction(epsilG float64) (aid int)
Print()
}
// ActionsQv4 4 directions
type ActionsQv4 [4]float64
// GetActionsQv to get Actions Quality Value list
func (a *ActionsQv4) GetActionsQv() interface{} {
return a
}
// GetActionQv to get specific action Quality Value
func (a *ActionsQv4) GetActionQv(aid int) float64 {
return a[aid]
}
// PutActionQv to put specific action Quality Value
func (a *ActionsQv4) PutActionQv(aid int, v float64) {
a[aid] = v
}
//TakeAction on a state based on epsilon
//epsilon between 0-1 1 for exploration max and 0 for exploitation max greedy)
func (a *ActionsQv4) TakeAction(epsilG float64) (aid int) {
//set action space
sl := len(a)
// exploration or exploitation ?
explor, err := chooseExplor(epsilG)
if err != nil {
log.Println(err)
}
// take random action
if explor {
aid = rand.Intn(sl)
return aid
}
// take best action
valRef := a[0]
for i := 0; i < sl; i++ {
if a[i] > valRef {
valRef = a[i]
aid = i
}
}
return aid
}
// Print for Printer interface
func (a *ActionsQv4) Print() {
fmt.Printf("%v", a)
}
// ActionsQv5 On Plot + 4 directions
type ActionsQv5 [5]float64
// GetActionsQv to get Actions Quality Value list
func (a *ActionsQv5) GetActionsQv() interface{} {
return a
}
// GetActionQv to get specific action Quality Value
func (a *ActionsQv5) GetActionQv(aid int) float64 {
return a[aid]
}
// PutActionQv to put specific action Quality Value
func (a *ActionsQv5) PutActionQv(aid int, v float64) {
a[aid] = v
}
//TakeAction on a state based on epsilon
//epsilon between 0-1 1 for exploration max and 0 for exploitation max greedy)
func (a *ActionsQv5) TakeAction(epsilG float64) (aid int) {
//set action space
sl := len(a)
// exploration or exploitation ?
explor, err := chooseExplor(epsilG)
if err != nil {
log.Println(err)
}
// take random action
if explor {
aid = rand.Intn(sl)
return aid
}
// take best action
valRef := a[0]
for i := 0; i < sl; i++ {
if a[i] > valRef {
valRef = a[i]
aid = i
}
}
return aid
}
// Print for Printer interface
func (a *ActionsQv5) Print() {
fmt.Printf("%v", a)
}
func chooseExplor(epsilG float64) (explor bool, err error) {
if epsilG < 0 || epsilG > 1 {
return false, Error(ErrEpsilonOutOfRange)
}
if epsilG == 0 {
explor = false
} else if epsilG == 1 {
explor = true
} else {
if float64(rand.Intn(100)/100) < epsilG {
explor = true
} else {
explor = false
}
}
return explor, nil
}