  The analysis and interpretation of the present and future neutrino
oscillation experiments strongly rely on the quantitative understanding of
neutrino and antineutrino interactions with nuclei in the "few GeV" energy
range. With the advent of the Liquid Argon Time Projection Chamber (LArTPC)
experimental techniques for neutrino detection, a novel approach and
methodology in neutrino data analysis is now being developed. Purpose of this
White Paper is to briefly illustrate this method, as based on real events
categorization into experimental exclusive topologies, rather than on MC driven
classification of the event rates in terms of interaction channel. Data
collected by the ArgoNeuT experiment in the "few-GeV" energy range are
extremely helpful to directly probe features of neutrino interactions and
associated nuclear effects in the range of interest for future long-baseline
neutrino oscillation experiments.
