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Molecular Series Identification

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VersionV2.1.1 Created on  Jun 23, 2026 10:51 AM
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This component groups a list of unique compounds into molecular series according to the series identification method selected in the Molecular Series Configuration component. It accepts as input a list of unique compounds with their molecular structure in SMILES or SDF format and, optionally, an associated biological activity. Upon grouping, activities are aggregated using multiple methods.

The component assumes a unique list of molecules as input (which can be obtained using the Molecule Activity Aggregation component), with the molecule ID as the row ID.

Workflow position
This component must be preceded by the Molecular Series Configuration component and should be followed by the Molecular Series Tuning component for manual adjustment of the series definition (in the case of clustering). The resulting series can then be analyzed and selected using the Molecular Series Selection component.

Clustering
When the selected series type involves clustering, a hierarchical clustering is performed using:

   - Distance metric — Cosine distance computed from Morgan count-based radius-2 1024-bit hashed molecular fingerprints
   - Linkage strategy — Complete Linkage

The optimal number of clusters is determined by default using the Silhouette method, but can be easily adjusted using the Molecular Series Tuning component. The distance matrix and the resulting clustering model are provided as the 2nd and 3rd outputs, respectively.

Component details

Input ports
  1. Type: Table
    Molecular Series Identification input
    Molecular Series Identification input table defined by Molecular Series Configuration component
Output ports
  1. Type: Table
    Molecular Series Identification data output
    Molecular Series Identification data output
  2. Type: Distance Measure
    Molecular Series Identification distance model
    Molecular Series Identification distance model
  3. Type: PortObject
    Molecular Series Identification clustering model
    Molecular Series Identification clustering model

Used extensions & nodes

Created with KNIME Analytics Platform version 5.8.1
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    KNIME Data GenerationTrusted extension

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    Version 5.6.0

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    Version 5.7.0

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    KNIME AG, Zurich, Switzerland

    Version 5.6.0

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    RDKit Nodes FeatureTrusted extension

    Novartis

    Version 5.2.1

    manuelschwarze

This component does not have nodes, extensions, nested components and related workflows

Legal

By using or downloading the component, you agree to our terms and conditions.

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