{"title":"Predicting the h-index with cost-sensitive naive Bayes","authors":"Alfonso Ibáñez, P. Larrañaga, C. Bielza","doi":"10.1109/ISDA.2011.6121721","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121721","url":null,"abstract":"Bibliometric indices are an increasingly important topic for the scientific community nowadays. One of the most successful bibliometric indices is the well-known h-index. In view of the attention attracted by this index, our research is based on the construction of several prediction models to forecast the h-index of Spanish professors (with a permanent position) for a four-year time horizon. We built two different types of models (junior models and senior models) to differentiate between professors' seniority. These models are learnt from bibliometric data using a cost-sensitive naive Bayes approach that takes into account the expected cost of instances predictions at classification time. Results show that it is easier to predict the h-index of the one-year time horizon than the others, that is, it has a higher average accuracy and lower average total cost than the others. Similarly, it is easier to predict the h-index of junior professors than senior professors.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126958405","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}
{"title":"Associative memory using pulse-type hardware neural network with STDP synapses","authors":"K. Saeki, T. Morita, Y. Sekine","doi":"10.1109/ISDA.2011.6121780","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121780","url":null,"abstract":"Synaptic plasticity in the living body, which is dependent on the order of and interval between pre- and post-synaptic spikes (STDP), has been observed by physiological experiments. Recently, many investigators have attempted to suggest the associative memory using electronics circuits. In this paper, we propose an associative memory model using a pulse-type hardware neural network with the STDP synapses. As a result, it is shown that the synaptic weight changes depending on the input current patterns of temporal sequence pulses. Furthermore, it is shown that if the output stimulus is lacking, the proposed network model can recognize this by the reading of input current patterns.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127971982","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}
{"title":"Score fusion of face and voice using Dempster-Shafer theory for person authentication","authors":"L. Mezai, F. Hachouf, Messaoud Bengherabi","doi":"10.1109/ISDA.2011.6121771","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121771","url":null,"abstract":"The present paper describes a method for person authentication which is based on the fusion of face and voice at the score level using Dempster-Shafer. Our experiments on the publicly available scores of the XM2VTS Benchmark database show a consistent improvement in performance compared to each individual modality. We have compared the proposed fusion with the sum rule and the log-likelihood ratio based fusion, the results have shown that our method enhances the performance compared to the methods cited above.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125126520","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}
P. Piaggi, D. Menicucci, C. Gentili, G. Handjaras, M. Laurino, Andrea Piarulli, M. Guazzelli, A. Gemignani, A. Landi
{"title":"Adaptive filtering for removing nonstationary physiological noise from resting state fMRI BOLD signals","authors":"P. Piaggi, D. Menicucci, C. Gentili, G. Handjaras, M. Laurino, Andrea Piarulli, M. Guazzelli, A. Gemignani, A. Landi","doi":"10.1109/ISDA.2011.6121661","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121661","url":null,"abstract":"fMRI is used to investigate brain functional connectivity after removing nonneural components by General Linear Model (GLM) approach with a reference ventricle-derived signal as covariate. Ventricle signals are related to low-frequency modulations of cardiac and respiratory rhythms, which are nonstationary activities. Herein, we employed an adaptive filtering approach to improve removing physiological noise from BOLD signals. Comparisons between filtering approaches were performed by evaluating the amount of removed signal variance and the connectivity between homologous contralateral regions of interest (ROIs). The global connectivity between ROIs was estimated with a generalized correlation named RV coefficient. The mean ROI decrease of variance was •52% and •11%, for adaptive filtering and GLM, respectively. Adaptive filtering led to higher connectivity between grey matter ROIs than that obtained with GLM. Thus, adaptive filtering is a feasible method for removing the physiological noise in the low frequency band and to highlight resting state functional networks.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132636744","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}
{"title":"Analysing the significance of no free lunch theorems on the set of real-world binary problems","authors":"C. García-Martínez, F. Rodríguez, M. Lozano","doi":"10.1109/ISDA.2011.6121679","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121679","url":null,"abstract":"No Free Lunch theorems for optimisation state that there does not exist any algorithm better than any other one when averaged performances over the whole set of possible problems are considered. However, it has been recently suggested that algorithms might show performance differences when just the set of real-world problems is under study. In this work, we first assume that binary problems appearing in the literature are representative of the set of real-world binary problems. Then, we analyse the mean performance of several algorithms on subsets of this well-defined testbed, in particular, static combinatorial unconstrained single-objective single-player optimisation problems whose solutions can be directly encoded as arrays of binary variables. Our results provide empirical evidence that no free lunch theorems unlikely hold on this set of binary real-world problems.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114324164","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}
M. Behálek, Stanislav Böhm, P. Krömer, Martin Surkovský, Ondrej Meca
{"title":"Parallelization of ant colony optimization algorithm using Kaira","authors":"M. Behálek, Stanislav Böhm, P. Krömer, Martin Surkovský, Ondrej Meca","doi":"10.1109/ISDA.2011.6121707","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121707","url":null,"abstract":"Parallel computing can be very useful for meta-heuristic algorithms, because it can reduce time to find a solution with given properties. On the other hand parallel programming is generally more difficult than the sequential one and we need more development time to get a working parallel solution. We are developing a tool named Kaira which is intended for modelling, debugging, and automated generation of parallel applications. The modelling is based on our own variant of Coloured Petri Nets. In this paper we present how to create parallel programs from an existing sequential implementation of Ant Colony Optimization Algorithm using Kaira. This approach simplifies the development process and thus saves the development time and costs.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123811192","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}
{"title":"Comparative transcription profiles of Solanum wild species under drought conditions: Preliminary results","authors":"M. Lucca, E. Hopp, R. Romero-Záliz","doi":"10.1109/ISDA.2011.6121825","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121825","url":null,"abstract":"Potato (Solanum tuberosum) is the third most important crop and the most relevance dicot in human feeding. Water stress is the greatest limitation of crop production. In response to drought, the plant triggers strategies that involve morphological, physiological and biochemical changes, polygenic traits controlled by additive genes and often synergistic. We focused on the analysis of transcriptional profiling on genotypes of Solanum wild species: S. venturii and S. cardiophyllum that present contrasting behavior under water stress using cDNA microarray hybridizations. Solanum wild species are a rich source of novel genes for introduction into cultivated species to enhance drought tolerance. Bioinformatic analysis of expression data of Solanum wild species showed significant differences in transcriptional profiles. Differentially expressed genes vary not only in number but also in their temporal expression profiles. These differences between wild potato species suggest new ways to exploit the genetic variability of wild germplasm for crop breeding.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121147537","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}
{"title":"Integrating network motifs into a genetic network: A case of study based on the Phop/PhoQ two-component system","authors":"O. Harari, C. Val, I. Zwir","doi":"10.1109/ISDA.2011.6121851","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121851","url":null,"abstract":"Genetic and genomic approaches have been successfully employed to assign genes to distinct regulatory networks. The strength of the connections in these networks must be specified to define the kinetics of a group of genes, but the uncertainty concerning the connections between genes, the ambiguity inherent to the biological processes, and the impossibility of experimentally determining the underlying biological properties only allow a rough prediction of gene interaction. Here we describe a framework that examines promoter sequences and identifies those cis-acting features that define transcriptional network motifs. Then, we employ an iterative process, based on Ordinary Differential Equations, to learn a network architecture that appropriately integrates these motifs into a full structure. The application of this method to the two component systems PhoP/PhoQ and the PmrA/PmrB in Salmonella enterica uncovered novel mechanisms that enable the inter-connection of these networks. The predictions were experimentally verified.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121170735","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}
{"title":"An adaptive strategy to help students in e-Learning systems using competency-based ontology and agents","authors":"Vitor Bremgartner, J. F. D. M. Netto","doi":"10.1109/ISDA.2011.6121785","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121785","url":null,"abstract":"With the increasing use of Learning Management Systems, people who use them have gotten new opportunities to access knowledge through the Internet. This has drawn attention of researchers from the Informatics and Education on several research issues. Among them is the strategy proposed in this paper, describing an approach that uses multi-agent system and competency-based learner model ontology focused on adaptation of the Moodle system to assist students who have doubts or errors when performing certain activities proposed by the teacher or who have low skills levels required to perform these activities. Such assistance is a personalized recommendation of students with an appropriate profile based on their skills and competencies to help students' weaknesses.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116028672","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}
J. A. Mariscal-Ramirez, J. Fernández-Prieto, M. Gadeo-Martos, J. C. Bago
{"title":"Knowledge-based wireless sensors using sound pressure level for noise pollution monitoring","authors":"J. A. Mariscal-Ramirez, J. Fernández-Prieto, M. Gadeo-Martos, J. C. Bago","doi":"10.1109/ISDA.2011.6121794","DOIUrl":"https://doi.org/10.1109/ISDA.2011.6121794","url":null,"abstract":"Over the last few years, there is a growing interest in monitoring noise pollution in urban areas and some recent studies have proposed the deployment of Wireless Sensor Networks for this task. Although the noise indicators defined by European Union directive 2002/49/EC can be calculated by sensor nodes, the noise perception is affected by subjective factors and there is not a direct correlation between the indicators and the subjective perception of noise. In this work, we present a mathematic algorithm for calculating the sound pressure level in a sensor node and a Fuzzy Noise Indicator that allows sensor nodes to infer the degree of subjective noise annoyance. Each sensor node executes an adapted Fuzzy Rule-Based System which has two inputs: a) the A-weighting equivalent noise level value and b) its persistence in time. The results show that the use of this Fuzzy Indicator helps to distinguish between situations with noise annoyance and other situations less annoying.","PeriodicalId":433207,"journal":{"name":"2011 11th International Conference on Intelligent Systems Design and Applications","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114495856","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}