Optical computing devices including a light source that emits electromagnetic radiation into an optical train extending from the light source to a detector, a substance arranged in the optical train and configured to optically interact with the electromagnetic radiation and produce sample interacted radiation, a processor array arranged in the optical train and including a plurality of ICE arranged on a substrate and configured to optically interact with the electromagnetic radiation. The detector receives modified electromagnetic radiation generated through optical interaction of the electromagnetic radiation with the substance and the processor array. A weighting device is coupled to one or more of the ICE to optically apply a weighting factor to the modified electromagnetic radiation prior to being received by the detector, wherein the detector generates an output signal indicative of a characteristic of the substance based on beams of modified electromagnetic radiation.