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\n\n \n \n \n \n \n \n Exploratory Study of the Effects of Cardiac Murmurs on Electrocardiographic-Signal-Based Biometric Systems.\n \n \n \n \n\n\n \n Becerra, M., A.; Duque-Mejía, C.; Zapata-Hernández, C.; Peluffo-Ordóñez, D., H.; Serna-Guarín, L.; Delgado-Trejos, E.; Revelo-Fuelagán, E., J.; and Blanco Valencia, X., P.\n\n\n \n\n\n\n Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), pages 410-418. 2018.\n
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@inbook{\n type = {inbook},\n year = {2018},\n keywords = {Biometric identification,Cardiac murmur,Electrocardiographic signal,Signal processing},\n pages = {410-418},\n websites = {http://link.springer.com/10.1007/978-3-030-03493-1_43},\n id = {0279fa9d-7b7e-3561-b8f8-18cbe6d222f1},\n created = {2021-02-10T05:25:38.895Z},\n file_attached = {false},\n profile_id = {dcbddeb4-43a7-32ca-8726-8f47f33c5362},\n last_modified = {2021-02-10T05:25:38.895Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Becerra2018},\n private_publication = {false},\n abstract = {The process of distinguishing among human beings through the inspection of acquired data from physical or behavioral traits is known as biometric identification. Mostly, fingerprint- and iris-based biometric techniques are used. Nowadays, since such techniques are highly susceptible to be counterfeited, new biometric alternatives are explored mainly based on physiological signals and behavioral traits -which are useful not only for biometric identification purposes, but may also play a role as a vital signal indicator. In this connection, the electrocardiographic (ECG) signals have shown to be a suitable approach. Nonetheless, their informative components (morphology, rhythm, polarization, and among others) can be affected by the presence of a cardiac pathology. Even more, some other cardiac diseases cannot directly be detected by the ECG signal inspection but still have an effect on their waveform, that is the case of cardiac murmurs. Therefore, for biometric purposes, such signals should be analyzed submitted to the effects of pathologies. This paper presents a exploratory study aimed at assessing the influence of the presence of a pathology when analyzing ECG signals for implementing a biometric system. For experiments, a data base holding 20 healthy subjects and 20 pathological subjects (diagnosed with different types of cardiac murmurs) are considered. The proposed signal analysis consists of preprocessing, characterization (using wavelet features), feature selection and classification (five classifiers as well as a mixture of them are tested). As a result, through the performed comparison of the classification rates when testing pathological and normal ECG signals, the cardiac murmurs’ undesired effect on the identification mechanism performance is clearly unveiled.},\n bibtype = {inbook},\n author = {Becerra, M. A. and Duque-Mejía, C. and Zapata-Hernández, C. and Peluffo-Ordóñez, D. H. and Serna-Guarín, L. and Delgado-Trejos, Edilson and Revelo-Fuelagán, E. J. and Blanco Valencia, X. P.},\n doi = {10.1007/978-3-030-03493-1_43},\n chapter = {Exploratory Study of the Effects of Cardiac Murmurs on Electrocardiographic-Signal-Based Biometric Systems},\n title = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)}\n}
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\n The process of distinguishing among human beings through the inspection of acquired data from physical or behavioral traits is known as biometric identification. Mostly, fingerprint- and iris-based biometric techniques are used. Nowadays, since such techniques are highly susceptible to be counterfeited, new biometric alternatives are explored mainly based on physiological signals and behavioral traits -which are useful not only for biometric identification purposes, but may also play a role as a vital signal indicator. In this connection, the electrocardiographic (ECG) signals have shown to be a suitable approach. Nonetheless, their informative components (morphology, rhythm, polarization, and among others) can be affected by the presence of a cardiac pathology. Even more, some other cardiac diseases cannot directly be detected by the ECG signal inspection but still have an effect on their waveform, that is the case of cardiac murmurs. Therefore, for biometric purposes, such signals should be analyzed submitted to the effects of pathologies. This paper presents a exploratory study aimed at assessing the influence of the presence of a pathology when analyzing ECG signals for implementing a biometric system. For experiments, a data base holding 20 healthy subjects and 20 pathological subjects (diagnosed with different types of cardiac murmurs) are considered. The proposed signal analysis consists of preprocessing, characterization (using wavelet features), feature selection and classification (five classifiers as well as a mixture of them are tested). As a result, through the performed comparison of the classification rates when testing pathological and normal ECG signals, the cardiac murmurs’ undesired effect on the identification mechanism performance is clearly unveiled.\n
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\n\n \n \n \n \n \n \n Generalized Low-Computational Cost Laplacian Eigenmaps.\n \n \n \n \n\n\n \n Salazar-Castro, J., A.; Peña, D., F.; Basante, C.; Ortega, C.; Cruz-Cruz, L.; Revelo-Fuelagán, J.; Blanco-Valencia, X., P.; Castellanos-Domínguez, G.; and Peluffo-Ordóñez, D., H.\n\n\n \n\n\n\n Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), pages 661-669. 2018.\n
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@inbook{\n type = {inbook},\n year = {2018},\n keywords = {Dimensionality reduction,Generalized methodology,Kernel approximations,Low-computational cost,Multiple kernel learning,Spectral methods},\n pages = {661-669},\n websites = {http://link.springer.com/10.1007/978-3-030-03493-1_69},\n id = {64e2b849-aef0-35d8-861a-b2b29cf9315f},\n created = {2021-02-10T05:25:38.898Z},\n file_attached = {false},\n profile_id = {dcbddeb4-43a7-32ca-8726-8f47f33c5362},\n last_modified = {2021-02-10T05:25:38.898Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Salazar-Castro2018},\n private_publication = {false},\n abstract = {Dimensionality reduction (DR) is a methodology used in many fields linked to data processing, and may represent a preprocessing stage or be an essential element for the representation and classification of data. The main objective of DR is to obtain a new representation of the original data in a space of smaller dimension, such that more refined information is produced, as well as the time of the subsequent processing is decreased and/or visual representations more intelligible for human beings are generated. The spectral DR methods involve the calculation of an eigenvalue and eigenvector decomposition, which is usually high-computational-cost demanding, and, therefore, the task of obtaining a more dynamic and interactive user-machine integration is difficult. Therefore, for the design of an interactive IV system based on DR spectral methods, it is necessary to propose a strategy to reduce the computational cost required in the calculation of eigenvectors and eigenvalues. For this purpose, it is proposed to use locally linear submatrices and spectral embedding. This allows integrating natural intelligence with computational intelligence for the representation of data interactively, dynamically and at low computational cost. Additionally, an interactive model is proposed that allows the user to dynamically visualize the data through a weighted mixture.},\n bibtype = {inbook},\n author = {Salazar-Castro, J. A. and Peña, D. F. and Basante, C. and Ortega, C. and Cruz-Cruz, L. and Revelo-Fuelagán, J. and Blanco-Valencia, X. P. and Castellanos-Domínguez, G. and Peluffo-Ordóñez, D. H.},\n doi = {10.1007/978-3-030-03493-1_69},\n chapter = {Generalized Low-Computational Cost Laplacian Eigenmaps},\n title = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)}\n}
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\n Dimensionality reduction (DR) is a methodology used in many fields linked to data processing, and may represent a preprocessing stage or be an essential element for the representation and classification of data. The main objective of DR is to obtain a new representation of the original data in a space of smaller dimension, such that more refined information is produced, as well as the time of the subsequent processing is decreased and/or visual representations more intelligible for human beings are generated. The spectral DR methods involve the calculation of an eigenvalue and eigenvector decomposition, which is usually high-computational-cost demanding, and, therefore, the task of obtaining a more dynamic and interactive user-machine integration is difficult. Therefore, for the design of an interactive IV system based on DR spectral methods, it is necessary to propose a strategy to reduce the computational cost required in the calculation of eigenvectors and eigenvalues. For this purpose, it is proposed to use locally linear submatrices and spectral embedding. This allows integrating natural intelligence with computational intelligence for the representation of data interactively, dynamically and at low computational cost. Additionally, an interactive model is proposed that allows the user to dynamically visualize the data through a weighted mixture.\n
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