Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Opinion Extraction as A Structured Sentiment Analysis using Transformers   Relationship extraction and named entity recognition have always been
considered as two distinct tasks that require different input data, labels, and
models. However, both are essential for structured sentiment analysis. We
believe that both tasks can be combined into a single stacked model with the
same input data. We performed different experiments to find the best model to
extract multiple opinion tuples from a single sentence. The opinion tuples will
consist of holders, targets, and expressions. With the opinion tuples, we will
be able to extract the relationship we need.

28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph