The sensor response vector. Let m ∈ R M be the sensor array response vector, with m i [g gas/g MOF] denoting the total mass of gas adsorbed in MOF i at thermodynamic equilibrium, normalized by the mass of MOF in the sensor. We assume, as in practice, that each MOF is cross-sensitive. As a result, m i is comprised of contributions from each of the G + 1 components of the gas phase.