We provide a comprehensive theory of multiple variants of ordinal multidimensional scaling, including external and internal unfolding. We do so in the continuous model of Shepard (1966).

翻译：我们针对序数多维缩放的多种变体（包括外部和内部展开）提供了完整的理论框架。该研究基于Shepard（1966）的连续模型展开。