“…Recommendations that suggest content that is of a smaller size fit within the finer granularity category. A total of 11 papers [3,4,15,38,42,45,52,58,65,72,77] were identified as fitting into the finer granularity category. As one example, Silva et al [65], describe an approach which builds a hierarchical view of a large data set, and then provides users with recommendations for specific variables or dimensions that yield deeper, lower-level views of the data which move down the hierarchy.…”