Learning of feature-based categories is known to interact with feature-variation in a variety of ways, depending on the type of variation (e.g., Markman and Maddox, 2003). However, relational categories are distinct from feature-based categories in that they determine membership based on structural similarities. As a result, the way that they interact with feature variation is unclear. This pap...

A double optimal solution of an n-dimensional system of linear equations Ax = b has been derived in an affine m-dimensional Krylov subspace with m n. We further develop a double optimal iterative algorithm (DOIA), with the descent direction z being solved from the residual equation Az = r0 by using its double optimal solution, to solve ill-posed linear problem under large noise. The DOIA is pro...

This text discusses and denounces the growing trend of “bibliometric denialism,” which rejects utility bibliometric indicators in scientific evaluation. denialism is evident decision to dispense with metrics, a practice encouraged by Declaration on Research Assessment (Dora) and, especially, upon signing Agreement Reforming promovido promoted Coalition for Advancing (Coara). Both advocate more ...