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Compactly supported graph building for spectral clustering 用于谱聚类的紧支持图构建
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913958
A. E. Castro-Ospina, A. Álvarez-Meza, G. Castellanos-Domínguez
{"title":"Compactly supported graph building for spectral clustering","authors":"A. E. Castro-Ospina, A. Álvarez-Meza, G. Castellanos-Domínguez","doi":"10.1109/IWOBI.2014.6913958","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913958","url":null,"abstract":"In spectral clustering approaches is of great importance how is built the graph representation over a data set, being reflected in the achieved clustering performance. In this work is introduced a methodology to build a graph representation of a given data, based on compactly supported radial basis functions which enables to highlight relevant pair-wise sample relationships. To tune such functions, an objective function is proposed, which aims to find a trade-off between a similarity and a sparsity measure, allowing to achieve a suitable local and global data structure representation. Synthetic and real-world data sets are tested. Results shows how proposed method improves clustering results, specially for an image segmentation task.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115518406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Estimation of dynamic neural activity including informative priors into a Kalman filter based approach 基于卡尔曼滤波的动态神经活动估计方法包括信息先验
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913953
J. D. Martínez-Vargas, J. S. Castaño-Candamil, G. Castellanos-Domínguez
{"title":"Estimation of dynamic neural activity including informative priors into a Kalman filter based approach","authors":"J. D. Martínez-Vargas, J. S. Castaño-Candamil, G. Castellanos-Domínguez","doi":"10.1109/IWOBI.2014.6913953","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913953","url":null,"abstract":"The EEG recordings contain dynamic information inherent to its nature, therefore, the accurate estimation of neural activity is highly dependent on the inclusion of such information in the inverse problem solution. The present study proposes the inclusion of informative priors into a Kalman filter based solution, aimed to include the different dynamics present on the data. This is achieved by decomposing a space-time-frequency, here after s-f-t, representation of the data to extract different dynamics contained in the EEG signals. Attained results using physiological-based simulations, show that including more informative s-f-t priors along with a temporal-based solution, the reconstruction of neural activity can be improved, in the present study, we achieved an average localization error of 4 mm, compared to 47 mm using the baseline approach.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129642948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Automatic tracking and counting of moving objects 自动跟踪和计数运动物体
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913945
Jonathan Philipps, Ingrid Bonninger, Martin Weigert, Javier Vásquez
{"title":"Automatic tracking and counting of moving objects","authors":"Jonathan Philipps, Ingrid Bonninger, Martin Weigert, Javier Vásquez","doi":"10.1109/IWOBI.2014.6913945","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913945","url":null,"abstract":"This work presents the conception and development of a software system to detect, track and count automatically moving objects in videos. The aim of the system is the automatically counting of moving turtles on a beach. To achieve a high recognition rate of the moving objects we consider three segmentation strategies (SubstractionGrayscale, SubstractionBinarization, Substraction Canny), two object identification methods (Grayscale Connected, FelzenwalbHuttenlocher) and two object recognition methods Nearest Object Distance, Certain Recognition Matching. In the preprocessing step of our system we select parameters like the interesting area and the object size. We use the segmentation process for the recognition of potential objects. After the identification of objects as turtles we track their movements. In the last step we count the turtles. In order to have a representative test number of moving objects we use videos with 1661 moving cars. The best results of 98.98 percent we reached with the combination Canny Edge Detection, Grayscale Connected, and Certain Region Matching Strategy.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134185866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Influence of image quality on SWT voting-based color reduction method for detecting text in natural scene images 图像质量对基于SWT投票的自然场景图像文本检测降色方法的影响
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913954
Andrej Ikica, P. Peer
{"title":"Influence of image quality on SWT voting-based color reduction method for detecting text in natural scene images","authors":"Andrej Ikica, P. Peer","doi":"10.1109/IWOBI.2014.6913954","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913954","url":null,"abstract":"The aim of the article is to study the influence of image quality on performance of text detection methods in natural scene images with emphasis on text segmentation stage. Natural scene images are often subject to numerous image-quality degradation factors, among which blur and noise are by far most common. To analyze their influence on performance of text detection methods, we systematically evaluated three state-of-the-art text detection methods, namely SWT, text detection-oriented color reduction and our own SWT voting-based color reduction, on the images that were degraded in the image capture process. Experimental results indicate that the SWT voting-based color reduction mostly outperforms the other two state-of-the-art methods. The experiment was carried out on a challenging CVL OCR DB text detection evaluation dataset.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131937583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Speech parameter selection for emotional stress characterization in women 女性情绪压力表征的言语参数选择
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913932
V. Rodellar-Biarge, D. Palacios-Alonso, V. Nieto-Lluis, P. Gómez-Vilda
{"title":"Speech parameter selection for emotional stress characterization in women","authors":"V. Rodellar-Biarge, D. Palacios-Alonso, V. Nieto-Lluis, P. Gómez-Vilda","doi":"10.1109/IWOBI.2014.6913932","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913932","url":null,"abstract":"A total of 68 acoustical, glottal and biomechanical parameters were extracted from neutral and stressed speech from 31 women. The stress was elicited by asking the speaker to defend her false opinion in a controversial topic. The importance of the parameters was evaluated accordingly to Pearson's coefficient, and the most relevant ones were tested in a SVM classification algorithm. We have found out that the most relevant parameters to characterize stress are pitch and the biomechanical parameters of body mass and body stiffness of the vocal folds.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127681801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Biomechanical characterization of phonation in Alzheimer's Disease 阿尔茨海默病发声的生物力学特征
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913931
P. Gómez-Vilda, Olimpia Pérez-Broncano, R. Martínez-Olalla, V. Rodellar-Biarge, Karmele Lopez de Ipina Pena, M. Ecay, P. Martínez-Lage
{"title":"Biomechanical characterization of phonation in Alzheimer's Disease","authors":"P. Gómez-Vilda, Olimpia Pérez-Broncano, R. Martínez-Olalla, V. Rodellar-Biarge, Karmele Lopez de Ipina Pena, M. Ecay, P. Martínez-Lage","doi":"10.1109/IWOBI.2014.6913931","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913931","url":null,"abstract":"Alzheimer's Disease (AD) speech production is being classicaly studied under different aspects as prosody, rhythmic or semantics, phonation being an unexplored field. The present work is devoted to the study of several cases under the scope of phonation, including AD speakers and healthy controls. Temporal events with interest in phonation are studied. These include fillers (spontaneous voiced pauses or lengthenings), which may be characterized by phonation biomechanics. Discrimination capabilities of biomechanical estimates as fundamental frequency and vocal fold body stiffness are used in comparative hypothesis tests between the study cases and a normative database, and among themselves. The conclusions derived pose the problem of normative database design, and the continuation of the research including other biomechanical correlates.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115212714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Analysis of non-invasive writing signals, applied to Essential Tremor: A nonlinear approach 非侵入性书写信号的分析，应用于特发性震颤:一种非线性方法
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913938
K. Lopez-de-Ipina, A. Bergareche, P. de la Riva, M. Faúndez-Zanuy, P. Calvo, F. Zelarain
{"title":"Analysis of non-invasive writing signals, applied to Essential Tremor: A nonlinear approach","authors":"K. Lopez-de-Ipina, A. Bergareche, P. de la Riva, M. Faúndez-Zanuy, P. Calvo, F. Zelarain","doi":"10.1109/IWOBI.2014.6913938","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913938","url":null,"abstract":"In this paper, which is part of a wide-ranging cross study for the diagnosis of Essential Tremor, we present a selection of nonlinear biomarkers from drawings and handwriting. These include Fractal Dimension and Entropy. The presence of integrated features of other diseases such as stress will be also analyzed. Then these new biomarkers will be integrated in future works with those obtained in the Biodonostia study. It should be highlighted that the use of this technology could provide undoubted benefits towards the development of more sustainable, low cost, high quality, non-invasive technologies. These systems are easily adaptable to the user and environment, and from a social and economic point of view can be very useful in real complex environments.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115257960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
An Approach to the Improvement of Electrocardiogram-based Sleep Breathing Pauses Detection by means of Permutation Entropy of the Heart Rate Variability 心率变异性置换熵改进心电图睡眠呼吸暂停检测方法
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913943
A. Ravelo-García, U. Casanova-Blancas, S. Martín-González, E. Hernández-Pérez, P. Q. Morales, J. L. Navarro-Mesa
{"title":"An Approach to the Improvement of Electrocardiogram-based Sleep Breathing Pauses Detection by means of Permutation Entropy of the Heart Rate Variability","authors":"A. Ravelo-García, U. Casanova-Blancas, S. Martín-González, E. Hernández-Pérez, P. Q. Morales, J. L. Navarro-Mesa","doi":"10.1109/IWOBI.2014.6913943","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913943","url":null,"abstract":"Permutation entropy obtained from heart rate variability (HRV) is analyzed in a statistical model integrating electrocardiogram derived respiratory (EDR) features and cepstrum coefficients in order to detect obstructive sleep apnea (OSA) events. 70 ECG recordings from Physionet database are divided into a learning set and a test set of equal size. Each set consists of 35 recordings, containing a single ECG signal. Each recording includes a set of reference annotations, one for each minute, which indicates the presence or absence of apnea during that minute. Statistical classification methods based on Logistic Regression (LR) is applied to the classification of sleep apnea epochs. EDR presents a sensitivity of 64.3% and specificity of 86.5% (auc=83.9). Cepstrum presents a sensitivity of 63.8% and specificity of 89.2% (auc=86). Contribution of the permutation entropy increases the performance of the LR model, playing an important role in the OSA quantification task. In particular, when all features are analyzed, classifier reaches a sensitivity of 70.2% and specificity of 91.8% (auc=89.8).","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128624602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Novel spectra in the supercontinuum generation with applications in the biodiversity conservation 超连续谱生成的新光谱及其在生物多样性保护中的应用
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913942
J. Cascante-Vindas, Francisco Siles Canales, Antonio Díez Cremades, M. V. Andrés Bou
{"title":"Novel spectra in the supercontinuum generation with applications in the biodiversity conservation","authors":"J. Cascante-Vindas, Francisco Siles Canales, Antonio Díez Cremades, M. V. Andrés Bou","doi":"10.1109/IWOBI.2014.6913942","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913942","url":null,"abstract":"This paper presents some spectra of the supercontinuum generation obtained with microstructured fibers and tapered fiber devices excited with quasi-continuous pumps. These spectra are part of a group (collection) of multiple configurations that were studied and evaluated by our working group, and that could be very useful in LIDAR as well as bio-imaging applications. This work is limited to present some spectra that could be useful in applications of biodiversity conservation. The prototypes for specific applications will be evaluated in future research.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116743243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Evaluation of optimization metaheuristics in clustering 聚类中优化元启发式的评价
3rd IEEE International Work-Conference on Bioinspired Intelligence Pub Date : 2014-07-16 DOI: 10.1109/IWOBI.2014.6913956
Javier Trejos Zelaya, Mario Villalobos Arias, Alex Murillo Fernandez, Jeffry Chavarria Molina, Juan Jose Fallas
{"title":"Evaluation of optimization metaheuristics in clustering","authors":"Javier Trejos Zelaya, Mario Villalobos Arias, Alex Murillo Fernandez, Jeffry Chavarria Molina, Juan Jose Fallas","doi":"10.1109/IWOBI.2014.6913956","DOIUrl":"https://doi.org/10.1109/IWOBI.2014.6913956","url":null,"abstract":"We have evaluated five metaheuristics of combinatorial optimization applied in clustering by partitions: simulated annealing, tabu search, genetic algorithm, ant colonies and particle swarms, using data tables generated randomly according to some defined parameters. Those techniques were compared to classical methods (k-means and Ward's agglomerative clustering). Sixteen tables were generated (four controlled factors, with two levels each) with normally distributed variables and, for each one, the experiment was repeated 100 times in a multistart procedure. The within-class inertia was used as the criterion to compare the classifications obtained. Best results were obtained for ant colonies, simulated annealing and the genetic algorithm.","PeriodicalId":433659,"journal":{"name":"3rd IEEE International Work-Conference on Bioinspired Intelligence","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124969744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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