Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient Estimation of Multidimensional Regression Model with
  Multilayer Perceptron   This work concerns estimation of multidimensional nonlinear regression models
using multilayer perceptron (MLP). The main problem with such model is that we
have to know the covariance matrix of the noise to get optimal estimator.
however we show that, if we choose as cost function the logarithm of the
determinant of the empirical error covariance matrix, we get an asymptotically
optimal estimator.

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The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th