lower_bound_fn

<p>Determine a lower bound for highest concentration
Calculate concentration for the coordinates of the highest insured sums</p>

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Methods for spatial risk calculations. It offers an efficient approach to determine the sum of all observations within a
circle of a certain radius. This might be beneficial for insurers who are required (by a recent European Commission regulation) to determine
the maximum value of insured fire risk policies of all buildings that are partly or fully located within a circle of a radius of 200m. See
Church (1974) <doi:10.1007/BF01942293> for a description of the problem.

Martin Haringa

lower_bound_fn: Determine a lower bound for highest concentration Calculate concentration for the coordinates of the highest insured sums

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