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PROGRAM:

NAME


mlpack_perceptron - perceptron

SYNOPSIS


mlpack_perceptron [-h] [-v] [-m string] [-l string] [-n int] [-o string] [-M string] [-T string] [-t string] -V

DESCRIPTION


This program implements a perceptron, which is a single level neural network. The
perceptron makes its predictions based on a linear predictor function combining a set of
weights with the feature vector. The perceptron learning rule is able to converge, given
enough iterations using the --max_iterations (-n) parameter, if the data supplied is
linearly separable. The perceptron is parameterized by a matrix of weight vectors that
denote the numerical weights of the neural network.

This program allows loading a perceptron from a model (-m) or training a perceptron given
training data (-t), or both those things at once. In addition, this program allows
classification on a test dataset (-T) and will save the classification results to the
given output file (-o). The perceptron model itself may be saved with a file specified
using the -M option.

The training data given with the -t option should have class labels as its last dimension
(so, if the training data is in CSV format, labels should be the last column).
Alternately, the -l (--labels_file) option may be used to specify a separate file of
labels.

All these options make it easy to train a perceptron, and then re-use that perceptron for
later classification. The invocation below trains a perceptron on 'training_data.csv' (and
'training_labels.csv)' and saves the model to ’perceptron.xml'.

$ perceptron -t training_data.csv -l training_labels.csv -m perceptron.csv

Then, this model can be re-used for classification on 'test_data.csv'. The example below
does precisely that, saving the predicted classes to ’predictions.csv'.

$ perceptron -i perceptron.xml -T test_data.csv -o predictions.csv

Note that all of the options may be specified at once: predictions may be calculated right
after training a model, and model training can occur even if an existing perceptron model
is passed with -m (--input_model_file). However, note that the number of classes and the
dimensionality of all data must match. So you cannot pass a perceptron model trained on 2
classes and then re-train with a 4-class dataset. Similarly, attempting classification on
a 3-dimensional dataset with a perceptron that has been trained on 8 dimensions will cause
an error.

OPTIONS


--help (-h)
Default help info.

--info [string]
Get help on a specific module or option. Default value ''. --input_model_file
(-m) [string] File containing input perceptron model. Default value ''.

--labels_file (-l) [string]
A file containing labels for the training set. Default value ''.

--max_iterations (-n) [int]
The maximum number of iterations the perceptron is to be run Default value 1000.

--output_file (-o) [string]
The file in which the predicted labels for the test set will be written. Default
value ’output.csv'. --output_model_file (-M) [string] File to save trained
perceptron model to. Default value ''.

--test_file (-T) [string]
A file containing the test set. Default value ’'. --training_file (-t) [string] A
file containing the training set. Default value ''.

--verbose (-v)
Display informational messages and the full list of parameters and timers at the
end of execution.

--version (-V)
Display the version of mlpack.

ADDITIONAL INFORMATION


ADDITIONAL INFORMATION


For further information, including relevant papers, citations, and theory, For further
information, including relevant papers, citations, and theory, consult the documentation
found at http://www.mlpack.org or included with your consult the documentation found at
http://www.mlpack.org or included with your DISTRIBUTION OF MLPACK. DISTRIBUTION OF
MLPACK.

mlpack_perceptron(1)

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