Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 29, No. 2 (1980), pp. 142-148 (7 pages) A test of the stability over time of the coefficients of a linear regression model ...

A semi-parametric generalization of the proportional hazards regression model is defined, whereby the hazard functions can cross for different values of the covariates. In the two-sample comparison, ...

SOMERVILLE, Mass.--(BUSINESS WIRE)--SmartBear, a leading provider of software development and visibility tools, has integrated VisualTest, its AI-driven automated regression visual testing tool ...