Table 1.

Notation . | Description . |
---|---|

a_{i} | The number of publications in category i |

c_{ik} | The number of references from publications in category i that cited publications in category k |

r_{jik} | The number of the shortest paths from categories j to k that pass through category i |

r_{jk} | The number of shortest paths between categories j and k |

p_{ik} | The proportion of references from publications in category i that cited publications in category k. This can be expressed as p_{ik} = c_{ik}/∑_{j}c_{ij} |

q_{ik} | The proportion of references from a publication in category i that cited publications in category k. q_{ik} is measured at the individual publication level |

P_{i} | The proportion of publications in category i over the total number of publications of all SCs. This can be expressed as P_{i} = a_{i}/∑_{j}a_{j} |

s_{ij} | The similarity between categories i and j |

$cjki$ | For publications in SC i, the number of citation links between their cited references in categories j and k |

n | The number of SCs that the references of the publications in SC i belong to |

Notation . | Description . |
---|---|

a_{i} | The number of publications in category i |

c_{ik} | The number of references from publications in category i that cited publications in category k |

r_{jik} | The number of the shortest paths from categories j to k that pass through category i |

r_{jk} | The number of shortest paths between categories j and k |

p_{ik} | The proportion of references from publications in category i that cited publications in category k. This can be expressed as p_{ik} = c_{ik}/∑_{j}c_{ij} |

q_{ik} | The proportion of references from a publication in category i that cited publications in category k. q_{ik} is measured at the individual publication level |

P_{i} | The proportion of publications in category i over the total number of publications of all SCs. This can be expressed as P_{i} = a_{i}/∑_{j}a_{j} |

s_{ij} | The similarity between categories i and j |

$cjki$ | For publications in SC i, the number of citation links between their cited references in categories j and k |

n | The number of SCs that the references of the publications in SC i belong to |

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