  We give predictions for the nonperturbative (intrinsic) contribution to the
$s(x) - \bar{s}(x)$ asymmetry of the nucleon sea. For this purpose we use
different light-front wave functions inspired by the AdS/QCD formalism,
together with a model of the nucleon in terms of meson-baryon fluctuations. The
holographic wave functions for an arbitrary number of constituents, recently
derived by us, give results quite close to known parametrizations that appear
in the literature.
