  We draw attention to some problems in the combined use of high-Q^2 deep
inelastic scattering (DIS) data and low-Q^2 hyperon \beta-decay data in the
determination of the polarized parton densities. We explain why factorization
schemes like the JET or AB schemes are the simplest in which to study the
implications of the DIS parton densities for the physics of the low-Q^2 region.
