1. A method of adjusting the resistance of a non-volatile resistive change element from a first state to a desired second state, comprising: inspecting a resistive change element to determine a first state; determining if said first state is distinct from a desired second state; selecting a set of stimulus parameters from a pre-generated list of stimulus parameter sets, wherein said selected set of stimulus parameters are selected in response to said determined first state and said desired second state and correspond to a transition from said determined first state to said desired second state, when said determined first state is distinct from said desired second state; and applying said selected set of stimulus parameters to said resistive change element, when said determined first state is distinct from said desired second state.