PMM Joiner

Joins model formulas and data in one table so that every microbial data set is assigned to all models. Furthermore, the node assigns parameter symbols in formulas (e.g. 't') to parameter names (in this case 'time') in preparation for a model estimation. 'Data' could be time series of bacterial concentrations from laboratory experiments, needed for a primary estimation, or primary models needed for a secondary estimation.

Available joining options depend on the input. For example, if a formula and bacterial concentrations are used as input only the 'Primary Join' is possible.

Options

Primary Join: 'Value' (e.g. bacterial concentrations) and 'Time' are assigned automatically to the equation. For primary model estimation these two are the only options.
Secondary Join: Joins secondary model parameters with test conditions from data used in the fitting of primary models.
Combined Join: Joins an omnibus model / a combined formula of one primary and one or more secondary formulas to data. Dependent on the amount of data sets the execution of the node may take longer than two minutes.
Join Options: Assign data to model parameters (primary model) or model parameters to secondary model formulas (secondary model). For example, if an estimated primary model contains the parameter 'k' you can choose from the dropdown menu a model formula for estimating the change of 'k' in dependence on one or more environmental conditions (e.g. temperature, pH, a_W).

Input Ports

: The upper port requires models. These may come from the following PMM-Lab nodes: Model Reader, Formula Reader, XLS Model Reader, Primary Model Selection, Model Creator or Formula Creator.
: For a primary model estimation the lower port requires data (e.g. time series of bacterial concentrations). These can be obtained from the nodes ComBase Reader, Data Reader or XLS Data Reader.

For a secondary model estimation fitted primary models are needed as input (e.g. from the nodes Model Reader, XLS Model Reader or Primary Model Selection).

Output Ports

: A combined table with models and data

Views

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Workflows

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Installation

To use this node in KNIME, install the extension Foodprocess-Lab from the below update site following our NodePit Product and Node Installation Guide:

v5.9

Plugin provider: BfR

Plugin version: 1.0.0.v202308150939

On NodePit since: 2025-12-11

Last update: 2026-01-11

KNIME versions: v5.9, v5.8, v5.7, v5.6, v5.5, v5.4, v5.3, v5.2, v5.1, v4.7, v4.6, v4.5, v4.3, v4.2, v4.1, v4.0, v3.7, v3.6

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