We wish to thank current active contributors to PSPP:
* Ben Pfaff wrote the initial program and manual, which comprises the
-majority of the current code. Ben continues to contribute and
+majority of the current code. Ben continues to contribute and
most of the core libraries which ensure that PSPP runs with optimal
speed are his work.
-* John Darrington wrote the graphical user interface, and the T-TEST,
-ONEWAY, EXAMINE, RANK and NPAR TESTS commands, implemented support
-for long variable names, psql and gnumeric and made numerous revisions
-to other modules.
+* John Darrington wrote the initial version of the graphical user interface,
+and many of the statistical procedures. John also implemented support for
+long variable names, PostgreSQL and Gnumeric and made numerous
+revisions to other modules.
* Jason Stover contributed statistical and numerical functionality,
-including lib/gslextras and the linear regression features. Jason
-is also an important contributor to GSL, which is used by PSPP.
+including lib/gslextras and the linear regression features. Jason
+is also an important contributor to GSL, which is used by PSPP.
-* Harry Thijssen contributed and maintains the Dutch translation.
+* Mehmet Hakan Satman provided the initial implementation of the QUICK CLUSTER command.
+ Alan Mead and others contributed later improvements including the cluster membership subcommands.
+
+* Friedrich Beckmann wrote the GRAPH command.
We also thank past contributors:
* Michael Kiefte contributed bug fixes and other enhancements.
* Patrick Kobly contributed bug fixes and other enhancements.
+
+* Rob van Son wrote the original version of the routine for
+ calculation of the significance of the Wilcoxon matched pairs signed
+ rank statistic used by the NPAR TEST command.
+
projects / pspp / blobdiff