The full-dimensional (metric, Euclidean, least squares) multidimensional scaling stress loss function is combined with a quadratic external penalty function term. The trajectory of minimizers of stress for increasing values of the penalty parameter is then used to find (tentative) global minima for low-dimensional multidimensional scaling. This is illustrated with several one-dimensional and two-dimensional examples.
翻译:本文将全维(度量、欧几里得、最小二乘)多维缩放应力损失函数与一个二次外部惩罚函数项相结合。通过追踪惩罚参数递增时应力最小化点的轨迹,该方法被用于寻找低维多维缩放问题的(试探性)全局最小值。文中通过若干一维与二维示例对此进行了说明。