Quantitative algorithmic examination of the LR04 oxygen-isotope record using cluster analysis and dynamic time warping (DTW) reveals significant new understandings of changes in glaciation and sea level during the Quaternary. For example, four relatively recent and major glacial stages, MIS 2 (or 2–4), 6, 12 and 16, emerge as a distinct group and suggest an Early Brunhes Shift to more extreme glacial stages about 660 thousand years ago. Secondly, two nominally interglacial stages, MIS 3 and 23, group with glacial stages. Of these two, recognition of MIS 3 as part of the last glacial phase is not a novel finding. However, recognition of MIS 23 as a glacial stage is significant because viewing MIS 22, 23, and 24 as one glacial phase formalizes a ~100,000-year glacial cycle from 960 to 859 ka. That result pushes the Mid-Pleistocene Transition, when the periodicity of climate cycles changed from 41 thousand to 100 thousand years, back to no later than 970 ka, counter to previous views that the Mid-Pleistocene Transition could have been as recent as 700 thousand years ago.

使用聚类分析和动态时间规整（DTW）对LR04氧同位素记录进行定量算法检查，揭示了第四纪冰川变化和海平面变化的重要新认识。例如，MIS 2（或2–4），6、12和16这四个相对较新的主要冰川阶段以一个独立的群体出现，表明早布鲁什早期向大约66万年前的极端冰川阶段转变。其次，两个名义上的冰期阶段，MIS 3和23，与冰期阶段组合在一起。在这两者中，将MIS 3识别为最后冰川期的一部分并不是一个新颖的发现。但是，将MIS 23识别为冰川期很重要，因为将MIS 22、23和24视为一个冰川期可以将960万〜859 ka的约100,000年的冰川周期正式化。这个结果推动了中更新世过渡，