Deduplicate a corpus by DOI or title

Collapses rows that refer to the same publication when combining results from multiple sources (SciELO + OpenAlex frequently share Brazilian pedology papers). DOI is the primary key when available; a normalised lower-case title is the fallback.

Usage

causal_corpus_deduplicate(corpus, by = c("doi", "title"))

Arguments

corpus

Data frame with at minimum a doi and / or title column.

by

Character vector of columns to deduplicate on. Default c("doi","title") — try DOI first, fall back to title.

Value

A de-duplicated data frame.