Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A unified algorithm for the non-convex penalized estimation: The ncpen
  package   Various R packages have been developed for the non-convex penalized
estimation but they can only be applied to the smoothly clipped absolute
deviation (SCAD) or minimax concave penalty (MCP). We develop an R package,
entitled ncpen, for the non-convex penalized estimation in order to make data
analysts to experience other non-convex penalties. The package ncpen implements
a unified algorithm based on the convex concave procedure and modified local
quadratic approximation algorithm, which can be applied to a broader range of
non-convex penalties, including the SCAD and MCP as special examples. Many
user-friendly functionalities such as generalized information criteria,
cross-validation and L2-stabilization are provided also.

12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an