Figure 1

Contributions of topic- and method-specific estimates of temperature and novelty to a journal's impact factor. (a) Relationship among the method-temperature (chemical), topic-temperature (MeSH), and the impact factor of 1,757 journals. (b) Volume (number of mentions) distribution of topics and methods. Inset: significant (p < 0.01) correlations between pairs of the five parameters. Green and red lines indicate positive and negative correlations, respectively, with line width proportional to the corresponding correlation strength. (c,d) Estimates of temperature and novelty parameters for various publication types with 95% credible intervals. Ovals indicate closely grouped estimates; labels are listed in decreasing novelty.