# Description

Split an exposure group into subsets or compare two groups.

# Inputs

exposures_A: Exposures

• With only this group $A$ specified, choose the split action to split the data into multiple batches

• exposures_B: Exposures (optional)

• With both groups $A$ and $B$ , choose the intersect action to compute set operations on the two groups, including (i) intersection $A ∩ B$ and differences (ii) $A - B$ and (iii) $B - A$.

# Common Parameters

• Action

• With only one exposure input group, choose split to split the data into multiple batches

• With both exposure input groups, choose intersect to compute the set intersection and difference between the two groups

• Split num. batches: With the split action, how many batches to split the exposures into

• Split batch size: With the split action, how many exposures to add to each batch

• Split randomize: With the split action, randomize the exposures to add to each batch

# Outputs

• split_X (multiple outputs): With the split action, batches of the resulting exposures

• remainder: With the split action, exposures left out of split_X batches due to the specified batch size and number of batches

• intersect: With the intersect action, result of $A ∩ B$

• A_minus_B: With the intersect action, set difference $A - B$

• B_minus_A: With the intersect action, set difference$B - A$

# Common Next Steps

• CTF Estimation

• Blob Picker

• Template Picker