1. A computer implemented method for determining a relationship score between a first entity and a second entity, comprising: generating a first computer-readable representation of a first spatial region containing the first entity; generating a second computer-readable representation of a second spatial region containing the second entity; comparing the first computer-readable representation and the second computer-readable representation at decreasing resolutions until a matching condition is reached; and assigning a relationship score to one or more of the first entity and the second entity based on the resolution at which the matching condition is reached.