The warning “ConvergenceWarning: lbfgs failed to converge (status=1): STOP: TOTAL NO. of ITERATIONS REACHED LIMIT” typically occurs in machine learning models when the Limited-memory Broyden–Fletcher–Goldfarb–Shanno (L-BFGS) optimization algorithm fails to find an optimal solution within the maximum number of iterations. [...]

Negative cosine similarity measures the angle between two vectors, indicating how dissimilar they are. A value close to -1 suggests the vectors point in opposite directions. This metric is significant in fields like natural language processing for understanding semantic differences, [...]