A verbose name makes which variable it corresponds to in the paper immediately obvious, and makes the code understandable.
It may be _possible_ to have a verbose variable that makes it obvious what it corresponds to in the paper, but I've never seen it. That really rings like a No True Scotsman argument to my ear. I much prefer the creole of latex style naming that most researchers tend towards. For example, take this code/paper pair
https://www.web.stanford.edu/~boyd/l1_ls/
The first line in the main loop is
z = A*x-y;
Yes, they could have written residual = dictionary_matrix * optimization_variable - sensed_data
or some such nonsense, but it is just exhausting to read. Further, it's actually more confusing because it conflates an application (compressed sensing) with what is actually a generic algorithm for l1 regularized least squares. This is a persistent problem with verbose names. In the search for an expressive name, people reach for names from a specific problem. This is a violation of separation of concerns.I don't find your second example exhausting to read at all - in fact I find it far _easier_ to read, especially to an astute reader (who is trying to make sense of a particular scientific literature).
No person will have any idea what `z = A*x-y` could mean 'in context', when it's so damn abstract of a reference.
Brevity in variable names is horrendous when cross-checking against papers. It is also a waste of time for scientists to reiterate what the legends/variable names mean, especially when their code could have used clear, unambiguous, verbose names instead.
If scientists want to improve their code, the first and most important step is to get them to use descriptive verbose names for their variables and functions, and to learn the single responsibility principle.