dimensional reduction

A formal account linked ENA's network pictures to its high-dimensional mathematics

Dale Bowman, Zachari Swiecki, Zhiqiang Cai, Yeyu Wang, Brendan Eagan, Jeff Linderoth, David Williamson Shaffer

2nd International Conference on Quantitative Ethnography (ICQE 2020)

The formal transformations that connect coded observations, accumulated unit networks, metric space, projection, and interpretable node placement in ENA. The derivation supports two core affordances: comparing the content of networks with summary statistics and interpreting those comparisons through network visualizations aligned with the model. Mathematical consistency does not guarantee construct validity, representative sampling, reliable coding, appropriate dependence assumptions, or a correct substantive interpretation.

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