1. A semiconductor memory system comprising: a plurality of memory devices; and a memory controller including a feature booster and a linear predictor and coupled with the plurality of memory devices, wherein the controller is configured to collect NAND data, and model the collected NAND data with a mixture model, wherein the mixture model includes parameters and at least two latent variables modeled with different distribution modeling, the feature booster is configured to predict at least one of the parameters based on initial feature information, the linear predictor is configured to predict feature information for the at least one of the parameters, and the feature booster is configured to predict at least one other of the parameters based on the feature information for the at least one of the parameters.