  We describe a general approach to quark flavor tagging in polarized hadronic
processes, with particular emphasis on semi-inclusive deep inelastic
scattering. A formalism is introduced that allows one to relate chosen quark
flavor polarizations to an arbitrary combination of final-state hadron spin
asymmetries. Within the context of the presented formalism, we quantify the
sensitivity of various semi-inclusive hadron asymmetries to the light quark
flavors. We show that unpolarized Lambda's may allow one to measure strange
quark and antiquark polarizations independently. We also highlight several
applications of our formalism, particularly to measurements intended to probe
further the spin structure of the nucleon.
