Ambiguity of the term "vector dimensionality"

Asked Jan 05 '18 at 18:49

Active Jan 05 '18 at 18:49

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When reading about vector dimensionality, usually I find two different uses for the term.

It may refer to the number of data points inside a vector. Example: $v = (4, 3, -1)$ has dimensionality 3.
It may appear in tensor context, where vectors are unidimensional, matrices ares two-dimensional and so on.

Most of the time, the use of the term dimensionality its clear given the context. But I was just wondering if there is a less ambiguous manner to refer to this 2 cases.

asked Jan 05 '18 at 18:49

arnaldocan

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Isn’t rank more common for case 2? – Randall Jan 05 '18 at 18:50
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Who - if at all - uses the term vector dimensionality ? – Hagen von Eitzen Jan 05 '18 at 18:50
@Hagen I'm not a english native speaker, but I do have encountered usages of this term or variants – arnaldocan Jan 05 '18 at 18:52
@Randall I see, so I can solve this ambiguity if a chose rank for case 2, thanks! – arnaldocan Jan 05 '18 at 18:53

Ambiguity of the term "vector dimensionality"

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