min_df和maxdf用来筛选文本特征,[min_df, max_df]区间越大,保留的特征越多,特征向量维数就越大,因为这些特征都是来自训练数据,如果保留的特征越多,很可能造成训练模型时将噪声也拟合进去,进而造成模型泛化能力弱。 [min_df, max_df] 如果太小,则可能造成under-fitting, 对训练数据的学习还不够充分,也会造成...
max-min-representationordered median functionsAn ordered median function is a continuous piecewise linear function. It is well known, that in finite dimensional spaces every continuous piecewise linear function admits a max–min representation in terms of its linear functions. We give an explicit ...
Optimization problems under two-sided (max; min)–linear Inequalities constraints Gad, MahmoudGAVALEC, M.; GAD, M.; ZIMMERMANN, K.: Optimization problems under (max, min)-linear equation and/or inequality constraints (to appear)... M Gad 被引量: 1发表: 2012年 Extensions of ADMM for Separ...
Max-min solution approach for multi-objective matrix game with fuzzy goals In this paper, we consider a multi-objective two person zero-sum matrix game with fuzzy goals, assuming that each player has a fuzzy goal for each of the... Sandeep KUMAR - 《Yugoslav Journal of Operations Research》...
函数MIN：返回一组数值中的最小值，函数MAXA：返回一组参数中的最大值，不忽略逻辑值和字符串，函数MAX查找当前公式单元格之前的最大值，在该最大值的基础上加1。方法/步骤 1 1、求最大值输入公式：=MAX(A2:A13)2 函数MAX忽略逻辑值和文本输入公式：=MAXA(A2:A13)函数MAXA：返回一组参数中的最大值，不...
pandas 12 数学计算操作df.sum()、df.min()、df.max()、df.decribe() 常用的数学计算无非就是加减,最大值最小值,方差等等,pandas已经内置了很多方法来解决这些问题。如:df.sum()、df.min()、df.max()、df.decribe()等。
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DF He,H Huang,QX Chen 摘要: We present a robust MPC which combines the dual-mode method and quasi-min–max MPC.Closed-loop ISS of the MPC is achieved with respect to bounded disturbances in LMI paradigm.Disturbances can be parameter uncertainties and external (persistent) disturbances.The MPC...
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Network flow is an excellent approach to finding min-cuts because of the celebrated max-flow min-cut theorem. For a long time, however, it was perceived as... H Liu,DF Wong - Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on 被引量: 103发表: 1998年 Efficient...