aggregate_duplicate_edges: Aggregate Duplicate Edges

In cograph: Analysis and Visualization of Complex Networks

Aggregate Duplicate Edges

Description

Combines duplicate edges by aggregating their weights using a specified function (sum, mean, max, min, or first).

Usage

aggregate_duplicate_edges(edges, method = "mean")

Arguments

edges	Data frame with from, to, and weight columns.
method	Aggregation method: "sum" (default), "mean", "max", "min", "first", or a custom function that takes a numeric vector and returns a single value.

Details

Aggregation Methods

sum

Total weight of all duplicate edges. Useful for frequency counts or when edges represent additive quantities (e.g., number of emails).

mean

Average weight. Useful for averaging multiple measurements or when duplicates represent repeated observations.

max

Maximum weight. Useful for finding the strongest connection or most recent value.

min

Minimum weight. Useful for the most conservative estimate or earliest value.

first

Keep first occurrence. Useful for preserving original order or when duplicates are erroneous.

The output edge list uses canonical node ordering (lower index first for undirected networks), ensuring consistent from/to assignment.

Value

A deduplicated data frame with the same columns as the input, where each node pair appears only once with its aggregated weight.

See Also

detect_duplicate_edges for identifying duplicates before aggregation

cograph documentation built on April 1, 2026, 1:07 a.m.