Fixing a BigQuant Training Error Caused by Feature Renaming

Summary

This short troubleshooting note addresses a BigQuant model-training failure that reports a ValueError because a maximum is being computed over an empty sequence. It attributes the problem to a parsing issue when feature or factor names are renamed. The suggested fix is to add spaces around the equals sign in the relevant renamed feature expression.

The note repeats the error context and says the formatting adjustment worked for the author. It does not provide the affected expression, explain the parser behavior, identify the software version, or demonstrate that this resolves other causes of the same exception. Treat it as a narrow debugging clue to try when the error appears alongside feature renaming, rather than a general diagnosis of empty-sequence errors.

Key ideas

• The reported training failure is a ValueError from taking a maximum over an empty sequence.\nThe note associates the failure with parsing feature names after renaming.\nIts proposed fix is to add spaces around the equals sign in the renamed expression.\nThe claimed resolution is anecdotal and lacks version details or a broader diagnostic procedure.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.