Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum-Inspired Keyword Search on Multi-Model Databases   With the rising applications implemented in different domains, it is
inevitable to require databases to adopt corresponding appropriate data models
to store and exchange data derived from various sources. To handle these data
models in a single platform, the community of databases introduces a
multi-model database. And many vendors are improving their products from
supporting a single data model to being multi-model databases. Although this
brings benefits, spending lots of enthusiasm to master one of the multi-model
query languages for exploring a database is unfriendly to most users.
Therefore, we study using keyword searches as an alternative way to explore and
query multi-model databases. In this paper, we attempt to utilize quantum
physics's probabilistic formalism to bring the problem into vector spaces and
represent events (e.g., words) as subspaces. Then we employ a density matrix to
encapsulate all the information over these subspaces and use density matrices
to measure the divergence between query and candidate answers for finding
top-\textit{k} the most relevant results. In this process, we propose using
pattern mining to identify compounds for improving accuracy and using
dimensionality reduction for reducing complexity. Finally, empirical
experiments demonstrate the performance superiority of our approaches over the
state-of-the-art approaches.

16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
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
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol