Object Oriented Data Analysis (OODA) has seen many developments over the past decade since Wang and Marron (2007) introduced the topic, and a broad overview of the field has been given by Marron and Alonso (2014). At the heart of OODA is the need to make choices about i ) what the data objects are, ii ) the conceptual space in which the data objects lie
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Dryden et al. (2019) studied this question.
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