In one embodiment, a method includes identifying a first node and a second node in a social graph. The historical location data is available for the first node and for the second node. The method also includes accessing one or more component metrics for computing a geo-metric. The geo-metric represents an assessment of a spatial commonality between the first node and the second node. The spatial commonalities are determined based on historical location data stored for the first node and historical location data stored for the second node. The method also includes accessing one or more coefficients each corresponding to one of the component metrics; calculating the geo-metric by applying the received coefficients to the component metrics and combining the component metrics; and providing the calculated geo-metric.
