init
========

.. js:function:: MaxPoolingLayer.init(prev_layer) 

    初期処理

    :param Layer prev_layer: 直前のレイヤー 

ソース
^^^^^^

.. code-block:: js

            init(prev_layer) {
                super.init(prev_layer);
    
                Assert(this.prevLayer instanceof ConvolutionalLayer, "Pooling-Layer-init");
    
                this.numChannels = this.prevLayer.numChannels;
                this.numRows = this.prevLayer.numRows / this.filterSize;
                this.numCols = this.prevLayer.numCols / this.filterSize;
    
                Assert(Math.ceil(this.numRows) == this.numRows && Math.ceil(this.numCols) == this.numCols);
    
                this.unitSize = this.numChannels * this.numRows * this.numCols;
            }