| CITL | Causal inference with time-lagged information |
| UG | Undirected graph |
| CI | Conditional independence |
| RDI | Restricted directed information |
| ADD | Ability of determining directions |
| TLPs | Time-lagged causal pairs |
| rTLPs | TLPs with regulatory relationships |
| RAPs | Randomly selected-and-direction-assigned gene pairs |
| rRAPs | RAPs with regulatory relationships |