Numerical Formal Concept Analysis for Systematic Clustering
Junheng Ma, Jiayang Sun, and Guo-Qiang Zhang
Numerical Formal Concept Analysis (nFCA) is a modern unsupervised learning tool for analyzing general numerical data. Given input data, this R package nFCA outputs two nFCA graphs: a H-graph and an I-graph that reveal systematic, hierarchical clustering and inherent structure of the data.

Nonparametric Estimate of FDR Based on Bernstein Polynomials
Zhong Guan <zguan@iusb.edu>, Baolin Wu <baolin@biostat.umn.edu>
and Hongyu Zhao <hongyu.zhao@yale.edu>.
nFDR is package that implements the nonparametric estimate
of FDR based on Bernstein polynomials. It calculates the
proportion of true null hypotheses, FDR, FNR, and q-values.

Zhong Guan <zguan@iusb.edu>, Baolin Wu <baolin@biostat.umn.edu> and Hongyu Zhao <hongyu.zhao@yale.edu>.
nFDR is package that implements the nonparametric estimate of FDR based on Bernstein polynomials. It calculates the proportion of true null hypotheses, FDR, FNR, and q-values.

Non Graphical Solution to the Cattell Scree Test
Two numerical indices are proposed for the Cattell Scree test:
1. Acceleration factor (with or without Parallel Analysis)
2. Optimal Coordinates (with or without Parallel Analysis)
Wed Mar  5 10:28:38 2003; HP_Propriétaire

Thu Mar 15 23:54:09 2007; HP_Propriétaire

Thu Feb  5 16:16:50 2009; HP_Propriétaire

Parallel Analysis and Non Graphical Solutions to the Cattell
Scree Test
Gilles Raiche (Universite du Quebec a Montreal) and David Magis
(Universite de Liege)
R (>= 2.9.2), MASS, psych, boot, lattice
Indices, heuristics and strategies to help to determine
the number of factors/components to retain: 1. Acceleration
factor (af with or without Parallel Analysis); 2. Optimal
Coordinates (noc with or without Parallel Analysis); 3.
Parallel analysis (components, factors and bootstrap); 4.
lambda > mean(lambda) (Kaiser, CFA and related); 5.
Cattell-Nelson-Gorsuch (CNG); 6. Zoski and Jurs multiple
regression (b, t and p); 7. Zoski and Jurs standard error of
the regression coeffcient (sescree); 8. Nelson R2; 9. Bartlett
khi-2; 10. Anderson khi-2; 11. Lawley khi-2 and 12.
Bentler-Yuan khi-2.