Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modular Procedural Generation for Voxel Maps   Task environments developed in Minecraft are becoming increasingly popular
for artificial intelligence (AI) research. However, most of these are currently
constructed manually, thus failing to take advantage of procedural content
generation (PCG), a capability unique to virtual task environments. In this
paper, we present mcg, an open-source library to facilitate implementing PCG
algorithms for voxel-based environments such as Minecraft. The library is
designed with human-machine teaming research in mind, and thus takes a
'top-down' approach to generation, simultaneously generating low and high level
machine-readable representations that are suitable for empirical research.
These can be consumed by downstream AI applications that consider human spatial
cognition. The benefits of this approach include rapid, scalable, and efficient
development of virtual environments, the ability to control the statistics of
the environment at a semantic level, and the ability to generate novel
environments in response to player actions in real time.

10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph