
La stratégie est basée sur la méthode de régression nucléaire de Nadaraya-Watson pour construire une zone de couverture dynamique de la volatilité, permettant un signal de transaction à bas prix et à haut prix en suivant l’intersection des prix avec la zone de couverture. La stratégie est basée sur l’analyse mathématique et peut s’adapter aux changements du marché.
Le cœur de la stratégie est de calculer la courbe de couverture dynamique des prix. Tout d’abord, en fonction de la période de révision personnalisée, construire la courbe de régression nucléaire de Nadaraya-Watson pour les prix (… prix de clôture, prix le plus élevé, prix le plus bas) et obtenir une estimation de prix lissée. Ensuite, calculer l’indicateur ATR sur la base de la longueur ATR personnalisée, combinant les facteurs proches et éloignés, pour obtenir la portée de la bande de couverture supérieure et inférieure.
Il est essentiel d’éviter et de réduire ces risques en optimisant les paramètres, en effectuant un retour d’expérience, en connaissant les facteurs d’impact et en prenant des précautions concrètes.
La stratégie intègre l’analyse statistique et l’analyse des indicateurs techniques, permettant de suivre les prix et les fluctuations de manière dynamique. Elle permet d’ajuster les paramètres en fonction du marché et de ses propres conditions.
/*backtest
start: 2022-12-04 00:00:00
end: 2023-12-10 00:00:00
period: 1d
basePeriod: 1h
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/
// © Julien_Eche
//@version=5
strategy("Nadaraya-Watson Envelope Strategy", overlay=true, pyramiding=1, default_qty_type=strategy.percent_of_equity, default_qty_value=20)
// Helper Functions
getEnvelopeBounds(_atr, _nearFactor, _farFactor, _envelope) =>
_upperFar = _envelope + _farFactor*_atr
_upperNear = _envelope + _nearFactor*_atr
_lowerNear = _envelope - _nearFactor*_atr
_lowerFar = _envelope - _farFactor*_atr
_upperAvg = (_upperFar + _upperNear) / 2
_lowerAvg = (_lowerFar + _lowerNear) / 2
[_upperNear, _upperFar, _upperAvg, _lowerNear, _lowerFar, _lowerAvg]
customATR(length, _high, _low, _close) =>
trueRange = na(_high[1])? math.log(_high)-math.log(_low) : math.max(math.max(math.log(_high) - math.log(_low), math.abs(math.log(_high) - math.log(_close[1]))), math.abs(math.log(_low) - math.log(_close[1])))
ta.rma(trueRange, length)
customKernel(x, h, alpha, x_0) =>
sumWeights = 0.0
sumXWeights = 0.0
for i = 0 to h
weight = math.pow(1 + (math.pow((x_0 - i), 2) / (2 * alpha * h * h)), -alpha)
sumWeights := sumWeights + weight
sumXWeights := sumXWeights + weight * x[i]
sumXWeights / sumWeights
// Custom Settings
customLookbackWindow = input.int(8, 'Lookback Window (Custom)', group='Custom Settings')
customRelativeWeighting = input.float(8., 'Relative Weighting (Custom)', step=0.25, group='Custom Settings')
customStartRegressionBar = input.int(25, "Start Regression at Bar (Custom)", group='Custom Settings')
// Envelope Calculations
customEnvelopeClose = math.exp(customKernel(math.log(close), customLookbackWindow, customRelativeWeighting, customStartRegressionBar))
customEnvelopeHigh = math.exp(customKernel(math.log(high), customLookbackWindow, customRelativeWeighting, customStartRegressionBar))
customEnvelopeLow = math.exp(customKernel(math.log(low), customLookbackWindow, customRelativeWeighting, customStartRegressionBar))
customEnvelope = customEnvelopeClose
customATRLength = input.int(60, 'ATR Length (Custom)', minval=1, group='Custom Settings')
customATR = customATR(customATRLength, customEnvelopeHigh, customEnvelopeLow, customEnvelopeClose)
customNearATRFactor = input.float(1.5, 'Near ATR Factor (Custom)', minval=0.5, step=0.25, group='Custom Settings')
customFarATRFactor = input.float(2.0, 'Far ATR Factor (Custom)', minval=1.0, step=0.25, group='Custom Settings')
[customUpperNear, customUpperFar, customUpperAvg, customLowerNear, customLowerFar, customLowerAvg] = getEnvelopeBounds(customATR, customNearATRFactor, customFarATRFactor, math.log(customEnvelopeClose))
// Colors
customUpperBoundaryColorFar = color.new(color.red, 60)
customUpperBoundaryColorNear = color.new(color.red, 80)
customBullishEstimatorColor = color.new(color.teal, 50)
customBearishEstimatorColor = color.new(color.red, 50)
customLowerBoundaryColorNear = color.new(color.teal, 80)
customLowerBoundaryColorFar = color.new(color.teal, 60)
// Plots
customUpperBoundaryFar = plot(math.exp(customUpperFar), color=customUpperBoundaryColorFar, title='Upper Boundary: Far (Custom)')
customUpperBoundaryAvg = plot(math.exp(customUpperAvg), color=customUpperBoundaryColorNear, title='Upper Boundary: Average (Custom)')
customUpperBoundaryNear = plot(math.exp(customUpperNear), color=customUpperBoundaryColorNear, title='Upper Boundary: Near (Custom)')
customEstimationPlot = plot(customEnvelopeClose, color=customEnvelope > customEnvelope[1] ? customBullishEstimatorColor : customBearishEstimatorColor, linewidth=2, title='Custom Estimation')
customLowerBoundaryNear = plot(math.exp(customLowerNear), color=customLowerBoundaryColorNear, title='Lower Boundary: Near (Custom)')
customLowerBoundaryAvg = plot(math.exp(customLowerAvg), color=customLowerBoundaryColorNear, title='Lower Boundary: Average (Custom)')
customLowerBoundaryFar = plot(math.exp(customLowerFar), color=customLowerBoundaryColorFar, title='Lower Boundary: Far (Custom)')
// Fills
fill(customUpperBoundaryFar, customUpperBoundaryAvg, color=customUpperBoundaryColorFar, title='Upper Boundary: Farmost Region (Custom)')
fill(customUpperBoundaryNear, customUpperBoundaryAvg, color=customUpperBoundaryColorNear, title='Upper Boundary: Nearmost Region (Custom)')
fill(customLowerBoundaryNear, customLowerBoundaryAvg, color=customLowerBoundaryColorNear, title='Lower Boundary: Nearmost Region (Custom)')
fill(customLowerBoundaryFar, customLowerBoundaryAvg, color=customLowerBoundaryColorFar, title='Lower Boundary: Farmost Region (Custom)')
longCondition = ta.crossover(close, customEnvelopeLow)
if (longCondition)
strategy.entry("Buy", strategy.long)
exitLongCondition = ta.crossover(customEnvelopeHigh, close)
if (exitLongCondition)
strategy.close("Buy")