@hoff97/tensor-js/dist/lib/autograd/ops/unary/powerScalarBack.js

PyTorch like deep learning inferrence library

export class PowerScalarBack {
    constructor(input, power, factor) {
        this.input = input;
        this.power = power;
        this.factor = factor;
    }
    backward(grad) {
        const pow = this.input.value.powerScalar(this.power - 1, this.factor * this.power);
        const gradIn = grad.multiply(pow);
        pow.delete();
        const needed = this.input.backward(gradIn);
        if (!needed) {
            gradIn.delete();
        }
    }
    delete() {
        if (!this.input.isLeaf()) {
            this.input.delete();
        }
    }
}
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