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Deterministic Inversion is a model-driven inversion approach for 3D seismic data, producing a best-estimate volume. Depending on the input, the plugin generates Acoustic Impedance or (Extended) Elastic Impedance volumes. MPSI - Ultrafast stochastic inversion is a separate plugin that generates hundreds of non-unique realizations. These realizations are subsequently used to analyze the uncertainty in the inversion, provide much more accurate estimates of net sand volumes, and generate probability volumes for sand/shale, connectivity, and other properties. MPSI - Ultrafast stochastic inversion is considered the fastest stochastic seismic inversion scheme currently available. This plugin is developed by Earthworks™ in collaboration with ARK CLS.