Method and apparatus for classifying a vehicle occupant via a non-parametric learning algorithm
First Claim
1. A classification system for classifying an input feature vector, representing a vehicle occupant, into one of a plurality of occupant classes, comprising:
- a database containing a plurality of feature vectors in a multidimensional feature space, each feature vector having an associated class from the plurality of output classes;
a data pruner that eliminates redundant feature vectors from the database;
a data modeler that constructs an instance-based, non-parametric classification model in the multidimensional feature space from the plurality of feature vectors; and
a class discriminator that selects an occupant class from the plurality of occupant classes according to the constructed classification model.
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Accused Products
Abstract
Systems and methods are provided for classifying an input feature vector, representing a vehicle occupant, into one of a plurality of occupant classes. A database (106) contains a plurality of feature vectors in a multidimensional feature space. Each feature vector has an associated class from the plurality of output classes. A data pruner (108) eliminates redundant feature vectors from the database. A data modeler (109) constructs an instance-based, non-parametric classification model (110) in the multidimensional feature space from the plurality of feature vectors. A class discriminator (112) selects an occupant class from the plurality of occupant classes according to the constructed classification model.
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Citations
20 Claims
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1. A classification system for classifying an input feature vector, representing a vehicle occupant, into one of a plurality of occupant classes, comprising:
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a database containing a plurality of feature vectors in a multidimensional feature space, each feature vector having an associated class from the plurality of output classes;
a data pruner that eliminates redundant feature vectors from the database;
a data modeler that constructs an instance-based, non-parametric classification model in the multidimensional feature space from the plurality of feature vectors; and
a class discriminator that selects an occupant class from the plurality of occupant classes according to the constructed classification model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for classifying an occupant into one of a plurality of output classes, comprising:
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generating training data comprising a plurality of feature vectors in a multidimensional feature space, each feature vector having an associated class from the plurality of output classes;
eliminating redundant feature vectors from the training data, such that a feature vector from the plurality of feature vectors is eliminated when the feature vector falls within a first threshold distance in the multidimensional feature space of another feature vector having the same associated class and beyond a second threshold distance of all feature vectors having a different associated class;
constructing an instance-based, non-parametric classification model in the multidimensional feature space from the plurality of feature vectors;
extracting features from sensor data associated with a vehicle occupant, such that an input feature vector can be determined in the multidimensional feature space to represent the vehicle occupant; and
assigning an output class to the vehicle occupant according to the determined input feature vector and the constructed classification model. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A computer program product, operative in a data processing system and embedded in a computer readable medium, for classifying a vehicle occupant comprising:
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a database containing a plurality of feature vectors in a multidimensional feature space, each feature vector having an associated class from the plurality of output classes;
a data pruning module that eliminates redundant feature vectors from the plurality of feature vectors;
a data modeling module that constructs an instance-based, non-parametric classification model in the multidimensional feature space from the plurality of feature vectors; and
a class discriminator module that selects an occupant class for the vehicle occupant from the plurality of occupant classes according to the constructed classification model and an input feature vector representing the occupant. - View Dependent Claims (18, 19, 20)
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Specification