nn/m.js

const M =
{
    Iterate:
    {
        Loop: (inDimensions, inCount, inFunction)=>
        {
            let i, j, outputVector;
            const outputCloud = [];
            for(i=0; row<inCount; i++)
            {
                outputVector = [];
                for(j=0; j<inDimensions; j++)
                {
                    outputVector.push(inFunction(j, i, outputVector));
                }
                outputCloud.push(outputVector);
            }
            return outputCloud;
        },
        Edit: (inCloud, inFunction)=> inCloud.map(row=>row.map(inFunction))
    },
    Create:
    {
              Box: (inV1, inV2, inCount)=> M.Iterate.Loop(inV1.length,    inCount,           i=> inV1[i]+(inV2[i]-inV1[i])*Math.random()),
        Transpose:             (inCloud)=> M.Iterate.Loop(inCloud.length, inCloud[0].length, (i, row)=> inCloud[i][row]),
            Outer:          (inV1, inV2)=> M.Iterate.Loop(inV1.length,    inV2.length,       (i, row)=> inV1[i]*inV2[row]),
            Clone:             (inCloud)=> M.Iterate.Edit(inCloud, i=> i)
    },
    Mutate:
    {
          Pad: inCloud=> inCloud.forEach(row=> row.push(1)),
        Unpad: inCloud=> inCloud.forEach(row=> row.pop())
    },
    Single:
    {
        Subtract:    (inV1, inV2)=> inV1.map((component, i)=> component-inV2[i]),
        Multiply:    (inV1, inV2)=> inV1.map((component, i)=> component*inV2[i]),
          Affine: (inV, inMatrix)=> inMatrix.map(row=> row.reduce((sum, current, index)=> sum + current*inV[index]))
    },
    Batch:
    {
          Subtract: (inCloud1, inCloud2)=> inCloud1.map((row, rowIndex)=> M.Single.Subtract(row, inCloud2[rowIndex])),
          Multiply: (inCloud1, inCloud2)=> inCloud1.map((row, rowIndex)=> M.Single.Multiply(row, inCloud2[rowIndex])),
            Affine:  (inCloud, inMatrix)=> inCloud.map(row=> M.Single.Affine(row, inMatrix)),
           Sigmoid:            (inCloud)=> M.Iterate.Edit(inCloud, i=>1/(1+Math.pow(Math.E, -i))),
        Derivative:            (inCloud)=> M.Iterate.Edit(inCloud, i=>i*(1-i)),
             Scale:  (inCloud, inScalar)=> M.Iterate.Edit(inCloud, i=>i*inScalar)
    }
}

export default M;