Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: regsem: Regularized Structural Equation Modeling   The regsem package in R, an implementation of regularized structural equation
modeling (RegSEM; Jacobucci, Grimm, and McArdle 2016), was recently developed
with the goal of incorporating various forms of penalized likelihood estimation
in a broad array of structural equations models. The forms of regularization
include both the ridge (Hoerl and Kennard 1970) and the least absolute
shrinkage and selection operator (lasso; Tibshirani 1996), along with sparser
extensions. RegSEM is particularly useful for structural equation models that
have a small parameter to sample size ratio, as the addition of penalties can
reduce the complexity, thus reducing the bias of the parameter estimates. The
paper covers the algorithmic details and an overview of the use of regsem with
the application of both factor analysis and latent growth curve models.

18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys