Method fromJSON

src/neural-network.js:903–930

* * @param json * @returns {NeuralNetwork}

(json)

   * @returns {NeuralNetwork}
   */
  fromJSON(json) {
    this.sizes = json.sizes;
    this._initialize();

    for (let i = 0; i <= this.outputLayer; i++) {
      let layer = json.layers[i];
      if (i === 0 && (!layer[0] || json.inputLookup)) {
        this.inputLookup = lookup.lookupFromHash(layer);
      }
      else if (i === this.outputLayer && (!layer[0] || json.outputLookup)) {
        this.outputLookup = lookup.lookupFromHash(layer);
      }
      if (i > 0) {
        const nodes = Object.keys(layer);
        this.sizes[i] = nodes.length;
        for (let j in nodes) {
          const node = nodes[j];
          this.biases[i][j] = layer[node].bias;
          this.weights[i][j] = toArray(layer[node].weights);
        }
      }
    }
    if (json.hasOwnProperty('trainOpts')) {
      this._updateTrainingOptions(json.trainOpts);
    }
    this.setActivation(this.activation || 'sigmoid');
    return this;
  }

  /**
   *