Classification of individual articles from all of science by research level
作者：
Highlights：
• Four research levels, characterizing the basic-to-applied spectrum of research, can be effectively modeled using words from titles and abstracts and citations.
• A multinomial logistic regression model of research levels was trained on over 11 million papers from all areas of science.
• The resulting model accurately captures variation in research level at the article level and was used to classify over 25 million documents in Scopus (1996–2011) by research level.
• Citation counts positively correlate with research level for the medical and physical sciences.
摘要
•Four research levels, characterizing the basic-to-applied spectrum of research, can be effectively modeled using words from titles and abstracts and citations.•A multinomial logistic regression model of research levels was trained on over 11 million papers from all areas of science.•The resulting model accurately captures variation in research level at the article level and was used to classify over 25 million documents in Scopus (1996–2011) by research level.•Citation counts positively correlate with research level for the medical and physical sciences.
论文关键词：Research level,Basic science,Applied science,Multinomial logistic regression model,Article-level classification
论文评审过程：Received 9 September 2013, Revised 16 October 2013, Accepted 16 October 2013, Available online 9 November 2013.
论文官网地址：https://doi.org/10.1016/j.joi.2013.10.005
