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Fix adam optimizer #70

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Fix adam optimizer #70

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4 changes: 2 additions & 2 deletions src/convnet_trainers.js
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Original file line number Diff line number Diff line change
Expand Up @@ -96,8 +96,8 @@
// adam update
gsumi[j] = gsumi[j] * this.beta1 + (1- this.beta1) * gij; // update biased first moment estimate
xsumi[j] = xsumi[j] * this.beta2 + (1-this.beta2) * gij * gij; // update biased second moment estimate
var biasCorr1 = gsumi[j] * (1 - Math.pow(this.beta1, this.k)); // correct bias first moment estimate
var biasCorr2 = xsumi[j] * (1 - Math.pow(this.beta2, this.k)); // correct bias second moment estimate
var biasCorr1 = gsumi[j] / (1 - Math.pow(this.beta1, this.k)); // correct bias first moment estimate
var biasCorr2 = xsumi[j] / (1 - Math.pow(this.beta2, this.k)); // correct bias second moment estimate
var dx = - this.learning_rate * biasCorr1 / (Math.sqrt(biasCorr2) + this.eps);
p[j] += dx;
} else if(this.method === 'adagrad') {
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