prov:value
| - Pi ??? Pj = 0 and Pi ??? ?? for all groupsif point p ??? Pi, then s(p, Pi) > s(p, Pj), where s is a function measuring the average distance of a point to the elements of a group and i ??? jif p(xi, yi, ti) ??? Pr, then p(xi + ???xi, yi + ???yi, ti + 1) ??? Pr, where ???xi and ???yi are the shifts of point p(xi, yi, ti) along the x and y axes, respectively, from frame ti to frame ti + 1.To perform
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