Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sparse Automatic Differentiation for Complex Networks of
  Differential-Algebraic Equations Using Abstract Elementary Algebra   Most numerical solvers and libraries nowadays are implemented to use
mathematical models created with language-specific built-in data types (e.g.
real in Fortran or double in C) and their respective elementary algebra
implementations. However, the built-in elementary algebra typically has limited
functionality and often restricts the flexibility of mathematical models and
the analysis types that can be applied to those models. To overcome this
limitation, a number of domain-specific languages such as gPROMS or Modelica
with more feature-rich built-in data types have been proposed. In this paper,
we argue that if numerical libraries and solvers are designed to use abstract
elementary algebra rather than the language-specific built-in algebra, modern
mainstream languages can be as effective as any domain-specific language. We
illustrate our ideas using the example of sparse Jacobian matrix computation.
We implement an automatic differentiation method that takes advantage of sparse
system structures and is straightforward to parallelize in a distributed memory
setting. Furthermore, we show that the computational cost scales linearly with
the size of the system.

23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn