keywords = "genetic algorithms, genetic programming, Feature
design, machine learning, pattern recognition, sequence
classification, time series classification, time series
data mining.",
ISSN = "1089-778X",
DOI = "doi:10.1109/TEVC.2014.2341451",
size = "16 pages",
abstract = "Pattern recognition methods rely on
maximum-information, minimum-dimension feature sets to
reliably perform classification and regression tasks.
Many methods exist to reduce feature set dimensionality
and construct improved features from an initial set;
however, there are few general approaches for the
design of features from numeric sequences. Any
information lost in preprocessing or feature
measurement cannot be recreated during pattern
recognition. General approaches are needed to extend
pattern recognition to include feature design and
selection for numeric sequences, such as time series,
within the learning process itself. This paper proposes
a novel genetic programming (GP) approach to automated
feature design called Autofead. In this method, a GP
variant evolves a population of candidate features
built from a library of sequence-handling functions.
Numerical optimization methods, included through a
hybrid approach, ensure that the fitness of candidate
algorithms is measured using optimal parameter values.
Autofead represents the first automated feature design
system for numeric sequences to leverage the power and
efficiency of both numerical optimisation and standard
pattern recognition algorithms. Potential applications
include the monitoring of electrocardiogram signals for
indications of heart failure, network traffic analysis
for intrusion detection systems, vibration measurement
for bearing condition determination in rotating
machinery, and credit card activity for fraud
detection.",
notes = "Department of Structural Engineering, University of
California, San Diego