AP Calculator

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 Palladian for KNIME from the following update site:

A zipped version of the software site can be downloaded here. Read our FAQs to get instructions about how to install nodes from a zipped update site.

Developers

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