"Randomization" is a broad term, used differently in different contexts. Within ClusterSeer, spatial randomization techniques vary among methods. For the multinomial and Poisson distributions, ClusterSeer generates random values by choosing values from the specified distribution. For conditional randomness, data values are reassigned among sub-groups.
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Randomization Technique |
Cluster Detection Method |
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Drawing from a multinomial distribution |
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Drawing from a Poisson distribution |
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Randomize data (rate, count, or case-control label) among spatial locations by swapping labels |
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Alter distances between points by multiplying their locations by a random number |