bob@statsci.com (Robert Treder) (09/17/90)
ANNOUNCING THE RELEASE OF S-PLUS VERSION 2.3 FOR UNIX WORKSTATIONS AND COMPUTE SERVERS ============================================================================ Statistical Sciences, Inc. (STATSCI), based in Seattle, Washington, has just released Version 2.3 of S-PLUS for Unix Workstations and Compute Servers. S-PLUS is a powerful system and extensible interactive language used for graphical data analysis, statistics and mathematical computing. GENERAL DESCRIPTION OF S-PLUS Version 2.3 ========================================= S-PLUS is a fully supported superset of New S. New S was developed by Becker, Chambers and Wilks at AT&T Bell Laboratories in an ongoing research effort that now spans a decade. Complete access to Unix tools is available from within S-PLUS. S-PLUS provides over 500 functions which may be easily extended by defining new functions written in the S-PLUS language and/or by incorporating user-supplied Fortran or C programs. STATSCI's ENHANCEMENTS AND EXTENSIONS ===================================== WINDOW SYSTEM INTERFACES ------------------------ S-PLUS provides enhanced window system interfaces for X11, SunView, and Apollo's Display Manager. The S-PLUS plot windows provide a small palette of mouse-driven selections including point and click for instant laser printer output (PostScript and LaserJet printers), plot orientation, text point size, color selection, and copy creation. HIGH INTERACTION GRAPHICS ------------------------- High-interaction graphics are provided in the form of pairwise scatter plots, 3-D point cloud rotation, marginal histograms and scrollable case listings, all with linked brushing. COLOR IMAGING ------------- A function is included for creating grey-scale or color image plots. CLASSICAL INFERENCE -------------------- S-PLUS contains a basic set of classical methods for estimation and testing. These methods are available in an interactive and graphical display form which makes S-PLUS widely useful for both teaching and research. The methods contained in Version 2.3 include: t-test (paired and unpaired One-way ANOVA with and without covariate equal and unequal var) Kruskal-Wallis test Wilcoxon signed rank test Generalized Cochran Q test Binomial test for p Mantel-Haenszel test for association Chisquare test for r X s Stuart-Maxwell test for association Fisher's exact test for 2 X 2 t-test for zero correlation McNemar's Test for symmetry Kendall's Tau and test for zero correlation Bivariate normality test Spearman's Rho and test for Univariate normality test zero correlation Additionally, the binomial, hypergeometric and Wilcoxon distributions have been added to the list of distributions represented in S-PLUS. MODERN REGRESSION TECHNIQUES ---------------------------- Regression model linearization (ACE) Additivity and Variance Stabilization for regression (AVAS) Projection Pursuit Regression Least Median of Squared Residuals (LMS) Regression Kernel Smoothers, Friedman and Stuetzle's "Super Smoother" TIME SERIES ----------- Univariate ARIMA models Multivariate AR models Robust Fits for univariate AR models Complex Demodulation Spectral Analysis General specification of filters and smoothers Robust filters and smoothers ROBUST METHODS -------------- Bisquare estimates of location and scale LMS regression Generalized M-estimates of AR parameters in time series Robust estimates of location and scale in time series Robust filters and smoothers for time series GENERALIZED LINEAR MODELS (GLIM) -------------------------------- This is a general implementation of McCullagh and Nelder's Generalized Linear Models including gaussian, binomial, poisson, gamma, and inverse gaussian error structures and identity, log, logit, probit, square root, inverse and loglog link functions. Model fitting includes offset and model sequence specification. SURVIVAL ANALYSIS ----------------- Survival Curves including Kaplan-Meier and Fleming-Harrington Cox Proportional Hazards Models G-rho family of tests for differences between survival curves NEW "HELP" FILES ---------------- Revised "help" files format with additional information and references, a permuted index for all the functions, optional pagers for scrolling, and optional pop-up help windows. ========================================================================= UNIX PLATFORM OFFERINGS ======================= Sun 386i, 3, 4 (includes SPARC) HP9000/3xx,/8xx DEC VAX, RISC (under Ultrix) APOLLO Silicon Graphics IRIS-4D CONVEX PYRAMID SUPPORT ======= Software and documentation updates S-PLUS hot-line phone support Statistical consulting Training courses in Seattle or on-site TECHNICAL NEWSLETTER ==================== The S-PRESS, an S/S-PLUS technical newsletter series commenced in June. Anyone wishing to receive the S-PRESS may do so by sending their surface mail address to STATSCI's electronic or surface mail address provided below. REBATE PROGRAM ============== STATSCI offers a rebate program for users of New S who wish to convert to S-PLUS. DISCOUNTS ========= Discounts are available for educational and non-profit/government organizations, as well as volume purchases. FOR MORE INFORMATION ==================== Email: mktg@statsci.com or uunet!statsci!mktg. Surface: STATSCI P.O. Box 85625 Phone: (206)322-8707 Seattle, WA 98145-1625 USA Fax: (206)322-0738