Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adaptive ABAC Policy Learning: A Reinforcement Learning Approach   With rapid advances in computing systems, there is an increasing demand for
more effective and efficient access control (AC) approaches. Recently,
Attribute Based Access Control (ABAC) approaches have been shown to be
promising in fulfilling the AC needs of such emerging complex computing
environments. An ABAC model grants access to a requester based on attributes of
entities in a system and an authorization policy; however, its generality and
flexibility come with a higher cost. Further, increasing complexities of
organizational systems and the need for federated accesses to their resources
make the task of AC enforcement and management much more challenging. In this
paper, we propose an adaptive ABAC policy learning approach to automate the
authorization management task. We model ABAC policy learning as a reinforcement
learning problem. In particular, we propose a contextual bandit system, in
which an authorization engine adapts an ABAC model through a feedback control
loop; it relies on interacting with users/administrators of the system to
receive their feedback that assists the model in making authorization
decisions. We propose four methods for initializing the learning model and a
planning approach based on attribute value hierarchy to accelerate the learning
process. We focus on developing an adaptive ABAC policy learning model for a
home IoT environment as a running example. We evaluate our proposed approach
over real and synthetic data. We consider both complete and sparse datasets in
our evaluations. Our experimental results show that the proposed approach
achieves performance that is comparable to ones based on supervised learning in
many scenarios and even outperforms them in several situations.

9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio