  We present our recent efforts to determine the matrix elements associated
with the transition between the nucleon and a nucleon resonance induced by the
vector current, which are necessary ingredients for models of neutrino-induced
reactions in the resonance region. This is accomplished by making the
comprehensive analysis of the data for various meson photo- and
electro-production reactions off the nucleon within a sophisticated
coupled-channels framework, which is known as the ANL-Osaka dynamical
coupled-channels model. We also give a brief introduction to our project for
constructing a unified neutrino reaction model conducted at the J-PARC Branch
of the KEK Theory Center.
