As indicated above, our model overcomes the key problem that there is no observation, and thus no context, for r(t) by context aggregation and sharing.
we create an test pointx for tuple r(t) in a way similar to creating data points, i.e., we set the relation, tuple, and entity variables accordingly and add the aggregated, normalized context of t. Once test pointx has been created, we can predict its score s(x) using Eq.