only_first_match {RNewsflow}

Transform document network so that each document only matches the earliest dated matching document

Description

Transforms the network so that a document only has an edge to the earliest dated document it matches within the specified time window[^duplicate].

Usage

only_first_match(g)

Arguments

g

A document similarity network, as created with newsflow_compare or create_document_network

Details

If there are multiple earliest dated documents (that is, having the same publication date) then edges to all earliest dated documents are kept.

Value

A network/graph in the igraph class

Examples

data(docnet)

subcomp1 = igraph::decompose.graph(docnet)[[2]]
subcomp2 = only_first_match(subcomp1)

igraph::get.data.frame(subcomp1)
igraph::get.data.frame(subcomp2)

graphics::par(mfrow=c(2,1))
document_network_plot(subcomp1, main='All matches')
document_network_plot(subcomp2, main='Only first match')
graphics::par(mfrow=c(1,1))