free variable meaning in English

自由变量
自由变项

8 . the method of the parameter fitting based b - spline is investigated . and the method of the parameter fitting which has three free variables is proposed
研究了b样条参数拟合方法，提出了三元b样条参数拟合方法。
It is observed experimentally and algorithmically that when training data are noisy and overlapping , many support vectors have lagrange multipliers on the upper bound . if it were known beforehand which examples are bound support vectors , these examples could be removed from the training set and their values are fixed at the upper bound . due to the reduced free variable counts , this method is promising to improve training time
实验和算法推导显示在强噪声和类间重叠数据下训练svm得到的支持向量很多处于边界位置，如果我们能够预先知道哪些样本是边界支持向量，这些边界支持向量的值就可以被固定在边界处，从而不参加训练过程，这样，训练过程中要优化的变量就可以减少，运行时间也可以缩短。