constructor(attrs = {}) {
    super(attrs)
    this.layerClass = 'ELU'

    const { alpha = 1.0 } = attrs

    this.description = `alpha: ${alpha}`

    this.alpha = alpha

    // GPU setup
    if (this.gpu) {
      this.program = webgl2.compileProgram(programSource)
    }
  }
Creates a ELU activation layer

@param {Object} [attrs] - layer config attributes
@param {number} [attrs.alpha] - scale for the negative factor