From the perspective of graph theory, understands multiplicationformula, full probability formula, Bayes formula effectively solves some complicated probability problems.
用图论的观点理解概率论中的乘法公式、全概率公式、贝叶斯公式，有效地解决了某些复杂的概率问题。
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A probability multiplicationformula was used as the theoretical foundation. The PNN structure was optimized based on statistical results from the PCA for the training samples.
Yacobi method belongs to iteration methods, and is widely used. It has simple formula, which needs only time multiplication of matrix and rector for one iteration.