function describeKernelElements(kernel) {
  tf.util.assert(
      kernel.length == 12,
      `kernel must be a array of length 12, got ${kernel.length}`);
  const outList = [];
  for (let idx = 0; idx < kernel.length; idx++) {
    outList.push({description: featureDescriptions[idx], value: kernel[idx]});
  }
  return outList;
}
Describe the current linear weights for a human to read.

@param {Array} kernel Array of floats of length 12.  One value per feature.
@returns {List} List of objects, each with a string feature name, and value
    feature weight.