IconIDPosteriorErrorProbability0 ×

Generic Workflow Nodes for KNIME: OpenMS version by Freie Universitaet Berlin, Universitaet Tuebingen, and the OpenMS Team

Estimates probabilities for incorrectly assigned peptide sequences and a set of search engine scores using a mixture model.

Web Documentation for IDPosteriorErrorProbability


Version of the tool that generated this parameters file.
The search engine scores are split by charge if this flag is set. Thus, for each charge state a new model will be computed.
If set only the top hits of every PeptideIdentification will be used
Only used, when top_hits_only set. Additionally, target/decoy information should be available. The score_type must be q-value from an previous False Discovery Rate run.
If set errors will be written but ignored. Useful for pipelines with many datasets where only a few are bad, but the pipeline should run through.
If set scores will be calculated as '1 - ErrorProbabilities' and can be interpreted as probabilities for correct identifications.
Name of log file (created only when specified)
Sets the debug level
Sets the number of threads allowed to be used by the TOPP tool
Disables progress logging to command line
Overwrite tool specific checks.
Enables the test mode (needed for internal use only)
Number of bins used for visualization. Only needed if each iteration step of the EM-Algorithm will be visualized
for 'Gumbel', the Gumbel distribution is used to plot incorrectly assigned sequences. For 'Gauss', the Gauss distribution is used.
Bounds the number of iterations for the EM algorithm when convergence is slow.

Input Ports

input file [idXML]

Output Ports

output file [idXML]
txt file (if gnuplot is available, a corresponding PDF will be created as well.) [txt,Inactive]


IDPosteriorErrorProbability Std Output
The text sent to standard out during the execution of IDPosteriorErrorProbability.
IDPosteriorErrorProbability Error Output
The text sent to standard error during the execution of IDPosteriorErrorProbability. (If it appears in gray, it's the output of a previously failing run which is preserved for your trouble shooting.)

Best Friends (Incoming)

Best Friends (Outgoing)


Update Site

To use this node in KNIME, install Generic Workflow Nodes for KNIME: OpenMS from the following update site:

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