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- Syntactic_pattern_recognition abstract "Syntactic pattern recognition or structural pattern recognition is a form of pattern recognition, in which each object can be represented by a variable-cardinality set of symbolic, nominal features. This allows for representing pattern structures, taking into account more complex interrelationships between attributes than is possible in the case of flat, numerical feature vectors of fixed dimensionality, that are used in statistical classification.Syntactic pattern recognition can be used instead of statistical pattern recognition if there is clear structure in the patterns. One way to present such structure is by means of a strings of symbols from a formal language. In this case the differences in the structures of the classes are encoded as different grammars.An example of this would be diagnosis of the heart with ECG measurements. ECG waveforms can be approximated with diagonal and vertical line segments. If normal and unhealthy waveforms can be described as formal grammars, measured ECG signal can be classified as healthy or unhealthy by first describing it in term of the basic line segments and then trying to parse the descriptions according to the grammars. Another example is tessellation of tiling patterns.A second way to represent relations are graphs, where nodes are connected if corresponding subpatterns are related. An item can be labeled as belonging to a class if its graph representation is isomorphic with prototype graphs of the class.Typically, patterns are constructed from simpler sub patterns in a hierarchical fashion. This helps in dividing the recognition task into easier subtask of first identifying sub patterns and only then the actual patterns.Structural methods provide description of items, which may useful on its own right. For example, syntactic pattern recognition can be used to find out what object are present in an image. Furthermore, structural methods are strong in finding a correspondence mapping between two images of an object. Under natural conditions, corresponding features will be in different positions and/or may be occluded in the two images, due to camera-attitude and perspective, as in face recognition. A graph-matching algorithm will yield the optimal correspondence.".
- Syntactic_pattern_recognition wikiPageID "6069850".
- Syntactic_pattern_recognition wikiPageRevisionID "356770422".
- Syntactic_pattern_recognition hasPhotoCollection Syntactic_pattern_recognition.
- Syntactic_pattern_recognition subject Category:Classification_algorithms.
- Syntactic_pattern_recognition type Abstraction100002137.
- Syntactic_pattern_recognition type Act100030358.
- Syntactic_pattern_recognition type Activity100407535.
- Syntactic_pattern_recognition type Algorithm105847438.
- Syntactic_pattern_recognition type ClassificationAlgorithms.
- Syntactic_pattern_recognition type Event100029378.
- Syntactic_pattern_recognition type Procedure101023820.
- Syntactic_pattern_recognition type PsychologicalFeature100023100.
- Syntactic_pattern_recognition type Rule105846932.
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- Syntactic_pattern_recognition comment "Syntactic pattern recognition or structural pattern recognition is a form of pattern recognition, in which each object can be represented by a variable-cardinality set of symbolic, nominal features.".
- Syntactic_pattern_recognition label "Syntactic pattern recognition".
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- Syntactic_pattern_recognition sameAs Q7662654.
- Syntactic_pattern_recognition sameAs Syntactic_pattern_recognition.
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