| OSPC | Open source product community |
| OSD | Open source design |
| OSCs | Open source communities |
| KCN | Knowledge collaboration network |
| RA | Random node loss |
| SC | Collective loss of structural hole nodes |
| LC | Collective loss of opinion leader nodes |
| SG | Successive loss of structural hole nodes |
| LG | Successive loss of opinion leader nodes |
| LCC | Largest connected component |
| RF | The strategy of loss of opinion leaders and their followers |