Software Reviews : GIANTS (Graphical Interactive Analysis of Time Series) Publisher: SciTech International,Inc.,Baliwick Court Bldg.,2231 N. Clybourn Ave.,Chicago,IL 60614-3011;800-622-3345 Year: 1991 Version: 1.1 Materials: Manual and three 5.25" diskettes or two 3.5" diskettes Price: $395 commercial & $295 academic Machine Specificity: IBM PC XT/AT or compatible System Requirements: At least 640KB of RAM and 1MB hard disk memory;MS-DOS 3.3 or later versions Effectiveness: Fair User Friendliness: Fair Documentation: Poor

GIANTS is a time-series software package written by aca demics at Moscow State University and published in the United States by SciTech International, Inc. The package can be used to obtain periodograms; estimate moving average models and sample coherence functions; test AR-hypotheses; conduct Kepstral analysis; calculate autoregressive estimators for spectral density; estimate in tervention and seasonal ARIMA models; and forecasting. The program is easy to install but is cumbersome to work with given its unusual and limited use of a mouse, inability to clear screens, lack of options for editing graphs and data, and poor documentation.