> For each image, the algorithm produces a heat map showing which parts of the image are most memorable. By emphasizing different regions, they can potentially increase the image’s memorability.

Most memorable, according to human subjects subjective thought on the matter?

> The team then pitted its algorithm against human subjects by having the model predicting how memorable a group of people would find a new never-before-seen image. It performed 30 percent better than existing algorithms and was within a few percentage points of the average human performance.

Who's to say human subjects are any good at objectively judging how memorable a photo is? I feel like I'm missing something.

Edit: Riight, I guess it could be based on observing neural activity in human subjects while they look at photos. That makes a lot more sense.