tailieunhanh - Chapter 1: Overview on Pattern Recognition and Machine Learning

Chapter 1: Overview on Pattern Recognition and Machine Learning includes about Pattern Recognition, Machine learning, Related fields of pattern recognition, Classification, Two paradigms of pattern recognition. | Chapter 1 Overview on Pattern Recognition and Machine Learning Assoc. Prof. Dr. Duong Tuan Anh Faculty of Computer Science and Engineering, HCMC Univ. of Technology 3/2015 Outline Pattern Recognition Machine learning Related fields of pattern recognition Classification Two paradigms of pattern recognition 1. Pattern recognition Humans are good at recognizing objects (or patterns). We find it difficult to write a computer program to recognize objects. Ex: By analyzing sample images of faces, a program should be able to capture the pattern specific to a face and identify it as a face. This is pattern recognition. There may be several classes and we habe to classify a particular face into a certain category (or class). This is classification. In pattern recognition, the term pattern is used to include all objects that we want to classify. A class is a collection of objects that are similar, but not necessarily identical, and which is distinguishable from other classes. Figure . | Chapter 1 Overview on Pattern Recognition and Machine Learning Assoc. Prof. Dr. Duong Tuan Anh Faculty of Computer Science and Engineering, HCMC Univ. of Technology 3/2015 Outline Pattern Recognition Machine learning Related fields of pattern recognition Classification Two paradigms of pattern recognition 1. Pattern recognition Humans are good at recognizing objects (or patterns). We find it difficult to write a computer program to recognize objects. Ex: By analyzing sample images of faces, a program should be able to capture the pattern specific to a face and identify it as a face. This is pattern recognition. There may be several classes and we habe to classify a particular face into a certain category (or class). This is classification. In pattern recognition, the term pattern is used to include all objects that we want to classify. A class is a collection of objects that are similar, but not necessarily identical, and which is distinguishable from other classes. Figure illustrates the difference between classification where the classes are known beforehand and classification where classes are creates after inspecting the objects. Figure Classification when the classes are (a) known and b) unknown beforehand. Applications of pattern recognitions Interest in pattern recognition has grown due to emerging applications. These include: Data mining Biometrics personal identification based on physical attributes of the face, iris, fingerprints, etc. Machine vision automatic visual inspection in an assembly line Character recognition automatic mail sorting by zip code, automatic check scanners at at ATMs. Document recognition recognize whether an email is spam or not, based on the message header and content. Speech recognition helping handicapped patients to control machines. Computer-added diagnosis helping doctors make diagnostic decisions based on interpreting medical data such as ultrasound images, electrocardiograms (ECGs) or .

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