Table 1.
Descriptive statistics of extracted article titles.
Table 2.
Descriptive statistics of article titles corpus, disciplinary group sub-corpora and disciplinary sub-corpora.
Fig 1.
Various fits for the frequency-rank distribution of 2014 WoS title words.
Fig 2.
Graphical representation of the Pareto-based indicator and the Gini coefficient on cumulative distributions.
Fig 3.
Distribution of two different corpora with identical Pareto-based indicator value.
Fig 4.
Pareto-based, Gini, TTR, Zipf head and tail scores of random corpus samples of increasing size.
All parameters were normalized to 1 for the full corpus.
Table 3.
Value drops of various lexical diversity indicators for different sample sizes.
Fig 5.
Evolution of lexical diversity indicator scores on the WoS title words corpus.
The evolution of the size of the corpus is shown in blue. All parameters were normalized to 1 for the 1975 corpus.
Fig 6.
Evolution of lexical diversity indicator scores on the WoS title words sub-corpus for Humanities.
The evolution of the size of the corpus is shown in blue. All parameters are normalized to 1 for the 1975 corpus.
Fig 7.
Evolution of the lexical concentration of scientific titles in all Sciences.
Fig 8.
Evolution of the lexical concentration of scientific titles in Natural Sciences and Engineering disciplines.
Table 4.
Various statistics on the lexical concentration score evolution of the different NSE disciplines.
Fig 9.
Evolution of the lexical concentration of scientific titles in Social Sciences and Humanities disciplines.
Table 5.
Various statistics on the lexical concentration score evolution of the different SSH disciplines.