The number of reaction examples increases exponentially but the number of new reaction types grows only linearly or sub-linearly. We re-use the most familiar and popular reaction classes although we also discover more complex transformations. Analysis of reaction-type dynamics is useful to estimate numbers of meaningful machine-learning models that can be constructed and for tracing suspicious/erroneous entries in databases.

中文翻译：

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有机化学真的呈指数级增长吗？

反应实例的数量呈指数增长，但新反应类型的数量仅呈线性或亚线性增长。我们重用了最熟悉和流行的反应类，尽管我们也发现了更复杂的转换。反应型动态分析对于估计可以构建的有意义的机器学习模型的数量以及跟踪数据库中的可疑/错误条目很有用。