Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two Sample Order Free Trend Inference with an Application in Plant
  Physiology   This work is motivated by a biological experiment with a split-plot design,
for the purpose of comparison of the changing patterns in seed weight from two
treatment groups as subgroups in each of the two groups subject to increasing
levels of stress. We formalize the question into a nonparametric two sample
comparison problem for changes among the sub samples, which was analyzed using
U-statistics. Zero inflated value were also considered in the construction of
the U-statistics. The U-statistics were then used in a Chi-square type test
statistics framework for hypothesis testing. Bootstrapped p-values were
obtained through simulated samples. It was proven that the distribution of the
simulated sample can be independent provided the observed samples have certain
summary statistics. Simulation results suggest that the test is consistent.

9
The categories of this paper are: nlin
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys