Citation Amnesia: On The Recency Bias of NLP and Other Academic Fields

Fuente: arXiv
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Autores principales: Wahle, Jan Philip, Ruas, Terry, Abdalla, Mohamed, Gipp, Bela, Mohammad, Saif M.
Formato: Preprint
Publicado: 2024
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author Wahle, Jan Philip
Ruas, Terry
Abdalla, Mohamed
Gipp, Bela
Mohammad, Saif M.
author_facet Wahle, Jan Philip
Ruas, Terry
Abdalla, Mohamed
Gipp, Bela
Mohammad, Saif M.
contents This study examines the tendency to cite older work across 20 fields of study over 43 years (1980--2023). We put NLP's propensity to cite older work in the context of these 20 other fields to analyze whether NLP shows similar temporal citation patterns to these other fields over time or whether differences can be observed. Our analysis, based on a dataset of approximately 240 million papers, reveals a broader scientific trend: many fields have markedly declined in citing older works (e.g., psychology, computer science). We term this decline a 'citation age recession', analogous to how economists define periods of reduced economic activity. The trend is strongest in NLP and ML research (-12.8% and -5.5% in citation age from previous peaks). Our results suggest that citing more recent works is not directly driven by the growth in publication rates (-3.4% across fields; -5.2% in humanities; -5.5% in formal sciences) -- even when controlling for an increase in the volume of papers. Our findings raise questions about the scientific community's engagement with past literature, particularly for NLP, and the potential consequences of neglecting older but relevant research. The data and a demo showcasing our results are publicly available.
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id arxiv_https___arxiv_org_abs_2402_12046
institution arXiv
publishDate 2024
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spellingShingle Citation Amnesia: On The Recency Bias of NLP and Other Academic Fields
Wahle, Jan Philip
Ruas, Terry
Abdalla, Mohamed
Gipp, Bela
Mohammad, Saif M.
Digital Libraries
Computation and Language
This study examines the tendency to cite older work across 20 fields of study over 43 years (1980--2023). We put NLP's propensity to cite older work in the context of these 20 other fields to analyze whether NLP shows similar temporal citation patterns to these other fields over time or whether differences can be observed. Our analysis, based on a dataset of approximately 240 million papers, reveals a broader scientific trend: many fields have markedly declined in citing older works (e.g., psychology, computer science). We term this decline a 'citation age recession', analogous to how economists define periods of reduced economic activity. The trend is strongest in NLP and ML research (-12.8% and -5.5% in citation age from previous peaks). Our results suggest that citing more recent works is not directly driven by the growth in publication rates (-3.4% across fields; -5.2% in humanities; -5.5% in formal sciences) -- even when controlling for an increase in the volume of papers. Our findings raise questions about the scientific community's engagement with past literature, particularly for NLP, and the potential consequences of neglecting older but relevant research. The data and a demo showcasing our results are publicly available.
title Citation Amnesia: On The Recency Bias of NLP and Other Academic Fields
topic Digital Libraries
Computation and Language
url https://arxiv.org/abs/2402.12046