trivialReduction

Method of mdss.

Collapse duplicate structure-matrix columns and empty parameter-matrix columns.

Source: src/model/@mdss/trivialReduction.m

Syntax

sys = trivialReduction(sys)

Description

trivialReduction simplifies the CPN representation of the model without changing its behaviour. It removes redundancy introduced when models are combined or eliminated:

Duplicate monomial columns. The stacked structure matrices (structureMatrixTrue, structureMatrixFalse, structureMatrixContinuous) are compared column-wise; columns with identical variable support are kept once, and the corresponding parameter-matrix coefficients of the merged columns are summed.
Empty parameter columns. Columns whose coefficients are zero across all equations are dropped from both the structure and parameter matrices.
Duplicate equations. Equality and inequality rows that are identical are collapsed; if an inequality coincides with an equality it is reduced away and an informational message is printed.

After reduction the parameter matrices, structure matrices, equalityIndex, inequalityIndex and the tensor rank are rebuilt, and a message reports how many columns and equations were removed. It is applied automatically at the end of operations such as algebraicElimination and the connection routines.

Input arguments

Argument	Description
`sys`	The `mdss` model to reduce.

Output arguments

Output	Description
`sys`	The reduced model, structurally equivalent to the input.

Example