Apparatuses, methods and storage medium associated with processing data are disclosed herewith. In embodiments, an apparatus may include a data pre-processor to partition a collection of scalar data associated with unidirectional relationships of a plurality of two endpoint pairs into a plurality of workloads of directional data associated with the plurality of two endpoint pairs. In embodiment, the partition operation may include partition of the two endpoint pairs into a plurality of bins, where each bin includes a plurality of quantiles of the two endpoint pairs. Other embodiments may be described and/or claimed.