chore: remove obsolete least square fit

netsize/netsize.go

@@ -34,7 +34,6 @@ type Estimator struct {
  localID kbucket.ID
  rt *kbucket.RoutingTable
  bucketSize int
- lsqConst float64
 
  measurementsLk sync.RWMutex
  measurements map[int][]measurement
@@ -49,17 +48,22 @@ func NewEstimator(localID peer.ID, rt *kbucket.RoutingTable, bucketSize int) *Es
  measurements[i] = []measurement{}
  }
 
- k := float64(bucketSize)
-
  return &Estimator{
  localID: kbucket.ConvertPeerID(localID),
  rt: rt,
  bucketSize: bucketSize,
  measurements: measurements,
- lsqConst: k * (k + 1) * (2*k + 1) / 6.0,
  }
 }
 
+// NormedDistance calculates the normed XOR distance of the given keys (from 0 to 1).
+func NormedDistance(p peer.ID, k ks.Key) float64 {
+ pKey := ks.XORKeySpace.Key([]byte(p))
+ ksDistance := new(big.Float).SetInt(pKey.Distance(k))
+ normedDist, _ := new(big.Float).Quo(ksDistance, keyspaceMaxFloat).Float64()
+ return normedDist
+}
+
 type measurement struct {
  distance float64
  weight float64
@@ -212,14 +216,6 @@ func (e *Estimator) calcWeight(key string) float64 {
  return math.Pow(2, float64(bucketLevel-e.bucketSize))
 }
 
-// NormedDistance calculates the normed XOR distance of the given keys (from 0 to 1).
-func NormedDistance(p peer.ID, k ks.Key) float64 {
- pKey := ks.XORKeySpace.Key([]byte(p))
- ksDistance := new(big.Float).SetInt(pKey.Distance(k))
- normedDist, _ := new(big.Float).Quo(ksDistance, keyspaceMaxFloat).Float64()
- return normedDist
-}
-
 // garbageCollect removes all measurements from the list that fell out of the measurement time window.
 func (e *Estimator) garbageCollect() {
  logger.Debug("Running garbage collection")