Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heterogeneous Graph Attention Network for Multi-hop Machine Reading
  Comprehension   Multi-hop machine reading comprehension is a challenging task in natural
language processing, which requires more reasoning ability and explainability.
Spectral models based on graph convolutional networks grant the inferring
abilities and lead to competitive results, however, part of them still face the
challenge of analyzing the reasoning in a human-understandable way. Inspired by
the concept of the Grandmother Cells in cognitive neuroscience, a spatial graph
attention framework named crname, imitating the procedure was proposed. This
model is designed to assemble the semantic features in multi-angle
representations and automatically concentrate or alleviate the information for
reasoning. The name "crname" is a metaphor for the pattern of the model: regard
the subjects of queries as the start points of clues, take the reasoning
entities as bridge points, and consider the latent candidate entities as the
grandmother cells, and the clues end up in candidate entities. The proposed
model allows us to visualize the reasoning graph and analyze the importance of
edges connecting two entities and the selectivity in the mention and candidate
nodes, which can be easier to be comprehended empirically. The official
evaluations in open-domain multi-hop reading dataset WikiHop and Drug-drug
Interactions dataset MedHop prove the validity of our approach and show the
probability of the application of the model in the molecular biology domain.

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The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: stat
20
The categories of this paper are: acc-phys