Notation
The following symbols, abbreviations, and conventions are used throughout the book.
Mathematical notation
| Symbol | Meaning |
|---|---|
| \(c_i\) | Citations received by paper \(i\) |
| \(N\) | Number of papers in a corpus |
| \(h\) | Hirsch index (h-index) |
| \(g\) | g-index |
| \(\text{MNCS}\) | Mean normalised citation score |
| \(\bar{x}\) | Sample mean |
| \(\tilde{x}\) | Sample median |
| \(G\) | Graph \((V, E)\) — vertices and edges |
| \(k_v\) | Degree of vertex \(v\) |
| \(B(v)\) | Betweenness centrality of vertex \(v\) |
Abbreviations
| Acronym | Expansion |
|---|---|
| API | Application Programming Interface |
| DOI | Digital Object Identifier |
| FWCI | Field-Weighted Citation Impact |
| JIF | Journal Impact Factor |
| MNCS | Mean Normalised Citation Score |
| NMI | Normalised Mutual Information |
| OA | Open Access |
| ORCID | Open Researcher and Contributor ID |
| ROR | Research Organization Registry |
| RRID | Research Resource Identifier |
| SCI | Science Citation Index |
| SDG | Sustainable Development Goal |
| WoS | Web of Science |
Code-style conventions
- Object names describe what they are (
effect_sizes), not how they were produced (df2). - Pipes use the base
|>. Tidyverse verbs are preferred over base R where readability favours them. - Network objects use
igraphrepresentations unless explicitly stated. - Random seeds are set per chapter; the global default is
42.
This book was built by the bookdown R package.