網路可靠度在決策支援資訊上是非常重要的。蒙地卡羅模擬法是其中一種評估不同種類網路結構之網路可靠度的一種方法。本文比較與分析三種蒙地卡羅模擬法，用來評估兩端點二元狀態之網路可靠度。第一種蒙地卡羅模擬法是在已知最小路徑下求網路可靠度。第二種蒙地卡羅模擬法是在已知最小切割下求取網路可靠度。第三種方法是在未知任何最小路徑或最小切割的資訊下去評估網路可靠度。從結果得知在未知任何最小路徑或最小切割的資訊下，直接評估網路可靠度的速度是在已知最小路徑或最小切割之下的195倍。另外我們亦結合粒子群演算法與蒙地卡羅模擬法，利用這兩種方法去解決在滿足可靠度的下界限制之下，最小化花費的成本。與先前文獻做比較得知，結合此兩種方法能求出比先前文獻所求的結果更佳。

Network reliability is very important for the decision support information. Monte Carlo Simulation (MCS) is one of the optimal algorithms to estimate the network reliability for different kinds of network configuration. This thesis has compared and analyzed three Monte Carlo simulation (MCS) methods for estimating the two-terminal network reliability of a binary-state network: (1) MCS1 simulates the network reliability in terms of known MPs, (2) MCS2 estimates the network reliability in terms of known MCs; and (3) MCS3 estimates the network reliability directly without knowing any information of MPs or MCs. Our simulation results show that the direct estimation without knowing any information of MPs or MCs can speedup about 195 times when compared with other traditional approaches which require MPs or MCs information. In addition, we also combine particle swarm optimization (PSO) and MCS to solve cost minimization problem under reliability constraints. Compared with previous works to solve this problem, the result of PSO combine with MCS can get the better solution.

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