Identifying signatures for data sets

A non-transitory machine-readable storage medium encoded with instructions executable by a hardware processor of a computing device for identifying signatures for data sets, the machine-readable storage medium comprising instructions to cause the hardware processor to:

• for each of a plurality of first data sets, obtain a data set signature;
• generate a first data structure for storing each data set signature that is distinct from each other data set signature obtained for the plurality of first data sets;
• for each of a plurality of second data sets, obtain at least one data subset;
• generate a second data structure for storing each data subset that is obtained from the second data sets;
• remove, from the first data structure, each data set signature that matches a data subset included in the second data structure;
• and
• for each data set signature removed from the first data structure, identify each first data set from which the data set signature was obtained;
• and
• for each identified first data set, obtain a new data set signature.