The first parameter in the initialization of an HVE_FORMAT_t variable corresponds to the type of query that defines a sector, and must be one of the predefined keywords:

	COMPARISON
	EQUALITY
	SUBSET
	RAW.

For SUBSET queries, the second parameter in the initialization of an HVE_FORMAT_t variable corresponds to the mapping of the raw data to the bit vector.

The mapping is done via bloom filter hashing, and the parameter corresponds to the probability of generating a false positive when mapping the data to the bit vector.

The value of the second parameter must be one of the following predefined keywords:

         EPS_PT1 
	EPS_PT01 
	EPS_PT001 

EPS_PT1 corresponds to 0.1 probability of a false positive.
EPS_PT01 corresponds to 0.01 probability of a false positive.
EPS_PT001 corresponds to 0.001 probability of a false positive.



For a more detailed explanation of the bloom filter and the epsilon values see QED Internals.