AP Calculator

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This node calculates Precision@k (Pr@k) and Average Precision (AP) values for ranked lists. For a description see Text Retrieval Quality: A Primer (Kavi Mahesh, Oracle Corporation, 1999).

Options

Relevance column: This option specifies the column indicating the relevance of the current row. If the cell is not of boolean type, it is parsed to a boolean value. In case of a string column, a value of true indicates that the current row is relevant, and irrelevant otherwise. In case of an integer, a value of 1 indicates that the current row is relevant, and irrelevant otherwise.

Input Ports

: Table with ranked entries and column indicating their relevance (boolean, string, or integer).

Output Ports

: Input table with appended Pr@k and AP columns.

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Installation

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

v5.5

A zipped version of the software site can be downloaded here.

Plugin provider: palladian.ws

Plugin version: 3.3.0.202506081733

On NodePit since: 2025-07-02

Last update: 2025-07-23

Tags: Streamable

KNIME versions: Since v3.6

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