Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rotation invariants of two dimensional curves based on iterated
  integrals   We introduce a novel class of rotation invariants of two dimensional curves
based on iterated integrals. The invariants we present are in some sense
complete and we describe an algorithm to calculate them, giving explicit
computations up to order six. We present an application to online
(stroke-trajectory based) character recognition. This seems to be the first
time in the literature that the use of iterated integrals of a curve is
proposed for (invariant) feature extraction in machine learning applications.

29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th