decida is used for electron device characterization, procedural circuit simulation and analysis of electronic circuits, or more general data analysis tasks.
From the README:
decida provides procedures for data visualization: X-Y plots, histograms, eye-diagrams, oscilloscope plots, smith-chart plots, pole-zero plots decida provides procedures for data and signal analysis: Fourier and inverse-Fourier Transforms, jitter analysis, delay analysis, table interpolation decida provides several general-purpose optimizers decida is used to build parameter extractors for electron devices such as MOS transistors and integrated resistors. decida provides several optimizers which are used to fit device models to measured or simulated device data. The parameter extractors use the built-in decida parameter, model, data, and extractor objects to configure the extraction process. decida is a Tcl/Tk scripting engine which can drive circuit simulations in Celerity, HSpice, Spectre, Nanosim and other circuit simulators. Procedural simulation and post-processing greatly improves the efficiency of many circuit design tasks, such as: simulating process/voltage/temperature case-combinations, initial module design involving changes to component values, final design verification with post-layout netlist, post-processing intermediate and final simulation results, and circuit optimization.