Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Best of Both Worlds: A Hybrid Approach for Multi-Hop Explanation with
  Declarative Facts   Language-enabled AI systems can answer complex, multi-hop questions to high
accuracy, but supporting answers with evidence is a more challenging task which
is important for the transparency and trustworthiness to users. Prior work in
this area typically makes a trade-off between efficiency and accuracy;
state-of-the-art deep neural network systems are too cumbersome to be useful in
large-scale applications, while the fastest systems lack reliability. In this
work, we integrate fast syntactic methods with powerful semantic methods for
multi-hop explanation generation based on declarative facts. Our best system,
which learns a lightweight operation to simulate multi-hop reasoning over
pieces of evidence and fine-tunes language models to re-rank generated
explanation chains, outperforms a purely syntactic baseline from prior work by
up to 7% in gold explanation retrieval rate.

8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn