The evolving PubMed landscape
Following up on "Are LLMs writing PubMed articles?", 7/7/2024, Cervantes suggested a factor, besides LLM availability, that has been influencing the distribution of word frequencies in PubMed's index:
As an investigator whose own papers are indexed in PubMed, and who has been watching the trends in scientific fashion for some decades, I can come up with other explanations. For one thing, it's easier to get exploratory and qualitative research published nowadays than it once was. Reviewers and editors are less inclined to insist that only hypothesis driven research is worthy of their journal — and, with open access, there are a lot more journals, including some with low standards and others that do insist on decent quality but will accept a wide range of papers. It's even possible now to publish protocols for work that hasn't been done yet. So it doesn't surprise me at all that words like "explore" and "delve" (which is a near synonym, BTW) are more likely to show up in abstracts, because that's more likely to be what the paper is doing.
I agree, although it remains unclear whether those changes have been strong enough to explain the effects documented in Dmitry Kobak et al., "Delving into ChatGPT usage in academic writing through excess vocabulary", arXiv.org 7/3/2024.
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