Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: XTreePath: A generalization of XPath to handle real world structural
  variation   We discuss a key problem in information extraction which deals with wrapper
failures due to changing content templates. A good proportion of wrapper
failures are due to HTML templates changing to cause wrappers to become
incompatible after element inclusion or removal in a DOM (Tree representation
of HTML). We perform a large-scale empirical analyses of the causes of shift
and mathematically quantify the levels of domain difficulty based on entropy.
We propose the XTreePath annotation method to captures contextual node
information from the training DOM. We then utilize this annotation in a
supervised manner at test time with our proposed Recursive Tree Matching method
which locates nodes most similar in context recursively using the tree edit
distance. The search is based on a heuristic function that takes into account
the similarity of a tree compared to the structure that was present in the
training data. We evaluate XTreePath using 117,422 pages from 75 diverse
websites in 8 vertical markets. Our XTreePath method consistently outperforms
XPath and a current commercial system in terms of successful extractions in a
blackbox test. We make our code and datasets publicly available online.

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The categories of this paper are: eess
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom