the internals of the model (see the TCAV paper for one example of such a metric). To do so, have the custom prediction function return a dictionary, where the predictions list is stored under the key <code>predictions</code>. Any other metric can be included by adding an additional key (this key will be used to display the metric) to the dictionary, and having its value be a list with one entry for each datapoint provided to the custom prediction function. The list entry should be a single number or string 