age_avg_table#

The Age Average Table#

Age Average Grid#

We use age_min , age_max , to denote the minimum and maximum ages in the age table. We use ode_step_size to denote its value in the option table. Let N >= 1 be the minimum integer such that

s = ( age_max - age_min ) / N <= ode_step_size

Define the set of age points \(a_i = i * s\) for \(i = 0, \ldots , N\), and define the set

\[S = \{ a_0, a_1 , \ldots , a_N \}\]

Note that \(a_0\) is age_min and \(a_N\) is age_max . The age average grid is the union of the set \(S\) and the set of age points in age_avg_split . This grid is used both for approximating averages and for approximation the solution of the dismod_at Ordinary Differential Equation . If age_avg_split is the empty set, the age average grid is the set \(S\).

Creation#

This table changes each time the ode_step_size or the age_avg_split changes. These value can change without having to re-execute the init_command . For this reason, this table is re-written for each command with the exception of the following: set , db2csv , csv2db , and modify .

age_avg_id#

This column has type integer and is the primary key for the this table. Its initial value is zero, and it increments by one for each row.

age#

This column has type real and is a monotone increasing values in the age average grid. The values are unique; i.e., none of the values are repeated.