Basic category

Primary index

Sub-index

Static index (SI)

Professionalism (PRO)

Topic concentration (TC)

Opinion leader intensity (OLI)

Exclusivity (EXC)

Access difficulty (AD)

Uniqueness of discourse system (UDS)

Freedom of viewpoint expression (FVE)

Virtuality (VIR)

Identity information transparency (IIT)

Offline communication possibility (OCP)

Dynamic index (DI)

New information production speed (NPS)

New content release intensity (NCRI)

New content display level (NCDL)

New information dissemination speed (NIDS)

Short-term attention level (STAL)

Internal recommendation strength (IRS)

Velocity of viewpoint derivation (VVD)