[NHQ]

There one thing in the paper that has me stumped

> Each primary capsule output[sic] sees the outputs of all 256 × 81 Conv1 units whose receptive fields overlap with the location of the center of the capsule.

What does that mean? The capsules are bundles of convolutions, and the output of the "256 * 81 conv1" is a 1D manifold. What does it mean "overlap" and what is the center of the capsule?

Note on [sic] - seems like it should read "input"

[eref]

I think it is a pretty unnecessary sentence. 81 comes from the 9x9 kernel size. It is obvious that those will overlap despite of the stride of 2. Maybe they mean the projective field.

[NHQ]

Thanks. So maybe it is saying that the field overlap with capsules is implicit in network, not a step in the calculation? That's my conclusion.