There are various stochastic delay contaminations in the IP networks

which have a great impact on the per-formance of IP network coordinates system in terms of the delay prediction accuracy and the coordinate stability.Here

from the perspective of keeping the statistical characteristic of delay without a loss and suppressing the abnormal delay jitter

two contamination mitigation methods were proposed respectively

i.e.

t-Filter and Δ-Filter.Through the PlanetLab datasets

compared with MP-Filter

the simulation results show that both t-Filter and Δ-Filter can enhance the delay pre-diction accuracy

the system stability and the system convergence in the more effective methods.