Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: IoU is not submodular   This short article aims at demonstrate that the Intersection over Union (or
Jaccard index) is not a submodular function. This mistake has been made in an
article which is cited and used as a foundation in another article. The
Intersection of Union is widely used in machine learning as a cost function
especially for imbalance data and semantic segmentation.

12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess