2. The method of claim 1 , wherein (A) (3) comprises: (A) (3) (a) extracting from the plurality of atomic tuples a locator tuple slice, wherein the locator tuple slice comprises a plurality of locator values, wherein the locator tuple slice forms a 1XN shape within the grid; and (A) (3) (b) determining, based on at least some of the plurality of locator values, whether any empty cell in the locator tuple slice implicitly contains a missing value.
3. The method of claim 2 , wherein (A) (3) further comprises: (A) (3) (c) if any of the empty cells is determined to implicitly contain a missing value, then storing a record of the missing value.