The proceedings contain 17 papers. The topics discussed include: unlabeled data and multiple views;studying self- and active-training methods for multi-feature set emotion recognition;semi-supervised linear discrimina...
ISBN:
(纸本)9783642282577
The proceedings contain 17 papers. The topics discussed include: unlabeled data and multiple views;studying self- and active-training methods for multi-feature set emotion recognition;semi-supervised linear discriminant analysis using moment constraints;manifold-regularized minimax probability machine;supervised and unsupervised co-training of adaptive activation functions in neural nets;semi-unsupervised weighted maximum-likelihood estimation of joint densities for the co-training of adaptive activation functions;semi-supervised kernel clustering with sample-to-cluster weights;homeokinetic reinforcement learning;iterative refinement of hmm and HCRF for sequence classification;on the utility of partially labeled data for classification of microarray data;multi-instance methods for partially supervised image segmentation;and semi-supervised training set adaption to unknown countries for traffic sign classifiers.
In this paper, we propose a new framework to assess temporal coordination (synchrony) and content coordination (behavior matching) in dyadic interaction. The synchrony module is dedicated to identify the time lag and ...
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A growing interest toward automatic, computer-based tools has been spreading among forensic scientists and anthropologists wishing to extend the armamentarium of traditional statistical analysis and classification tec...
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Training an ensemble of neuralnetworks is an interesting way to build a Multi-net System. One of the key factors to design an ensemble is how to combine the networks to give a single output. Although there are some i...
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ISBN:
(纸本)9783540699385
Training an ensemble of neuralnetworks is an interesting way to build a Multi-net System. One of the key factors to design an ensemble is how to combine the networks to give a single output. Although there are some important methods to build ensembles, Boosting is one of the most important ones. Most of methods based on Boosting use an specific combiner (Boosting Combiner). Although the Boosting combiner provides good results on boosting ensembles, the results of previouses papers show that the simple combiner Output Average can work better than the Boosting combiner. In this paper, we study the performance of sixteen different combination methods for ensembles previously trained with Adaptive Boosting and Average Boosting. The results show that the accuracy of the ensembles trained with these original boosting methods can be improved by using the appropriate alternative combiner.
Among the approaches to build a Multi-Net system, stacked Generalization is a well-known model. The classification system is divided into two steps. Firstly, the level-O generalizers are built using the original input...
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ISBN:
(纸本)9783540699385
Among the approaches to build a Multi-Net system, stacked Generalization is a well-known model. The classification system is divided into two steps. Firstly, the level-O generalizers are built using the original input data and the class label. Secondly, the level-] generalizers networks are built using the outputs of the level-O generalizers and the class label. Then, the model is ready for patternrecognition. We have found two important adaptations of stacked Generalization that can be applyied to artificialneuralnetworks. Moreover, two combination methods, stacked and stacked+, based on the stacked Generalization idea were successfully introduced by our research group. In this paper, we want to empirically compare the version of the original stacked Generalization along with other traditional methodologies to build Multi-Net systems. Moreover, we have also compared the combiners we proposed. The best results are provided by the combiners stacked and stacked+ when they are applied to ensembles previously trained with Simple Ensemble.
Real human-computer interaction systems based on different modalities face the problem that not all information channels are always available at regular time steps. Nevertheless an estimation of the current user state...
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Automatic emotion classification is a task that has been subject of study from very different approaches. Previous research proves that similar performance to humans can be achieved by adequate combination of modaliti...
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Target propagation in deep neuralnetworks aims at improving the learning process by determining target outputs for the hidden layers of the network. To date, this has been accomplished via gradient-descent or relying...
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ISBN:
(纸本)9783319999784;9783319999777
Target propagation in deep neuralnetworks aims at improving the learning process by determining target outputs for the hidden layers of the network. To date, this has been accomplished via gradient-descent or relying on autoassociative networks applied top-to-bottom in order to synthesize targets at any given layer from the targets available at the adjacent upper layer. This paper proposes a different, error-driven approach, where a regular feed-forward neural net is trained to estimate the relation between the targets at layer l and those at layer l - 1 given the error observed at layer l. The resulting algorithm is then combined with a pre-training phase based on backpropagation, realizing a proficuous "refinement" strategy. Results on the MNIst database validate the feasibility of the approach.
We present a new noninvasive multi-sensor capturing system for recording video, sound and motion data. The characteristic of the system is its 1msec. order accuracy hardware level synchronization among all the sensors...
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In the context of biomedical image processing and bioinformatics, an important problem is the development of accurate models for image segmentation and DNA spot detection. In this paper we propose a highly efficient u...
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ISBN:
(纸本)9783642121586
In the context of biomedical image processing and bioinformatics, an important problem is the development of accurate models for image segmentation and DNA spot detection. In this paper we propose a highly efficient unsupervised Bayesian algorithm for biomedical image segmentation and spot detection of cDNA microarray images, based on generalized Gaussian mixture models. Our work is motivated by the fact that biomedical and cDNA microarray images both contain non-Gaussian characteristics, impossible to model using rigid distributions like the Gaussian. Generalized Gaussian mixture models are robust in the presence of noise and outliers and are more flexible to adapt the shape of data.
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