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Träfflista för sökning "hsv:(NATURVETENSKAP) hsv:(Data och informationsvetenskap) hsv:(Bioinformatik beräkningsbiologi) "

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  • Buckland, Philip I., 1973-, et al. (författare)
  • SEAD - The Strategic Environmental Archaeology Database : Progress Report Spring 2014
  • 2014
  • Ingår i: SEAD. - : The Environmental Archaeology Laboratory, Umeå University.
  • Rapport (övrigt vetenskapligt)abstract
    • This report provides an overview of the progress and results of the VR:KFI infrastructure projects 2007-7494 and (825-)2010-5976. It should be considered as a status report in an on-going long-term research infrastructure development project.
  • Mashad Nemati, Hassan, 1982-, et al. (författare)
  • Bayesian Network Representation of Meaningful Patterns in Electricity Distribution Grids
  • 2016
  • Ingår i: 2016 IEEE International Energy Conference (ENERGYCON). - 9781467384636
  • Konferensbidrag (refereegranskat)abstract
    • The diversity of components in electricity distribution grids makes it impossible, or at least very expensive, to deploy monitoring and fault diagnostics to every individual element. Therefore, power distribution companies are looking for cheap and reliable approaches that can help them to estimate the condition of their assets and to predict the when and where the faults may occur. In this paper we propose a simplified representation of failure patterns within historical faults database, which facilitates visualization of association rules using Bayesian Networks. Our approach is based on exploring the failure history and detecting correlations between different features available in those records. We show that a small subset of the most interesting rules is enough to obtain a good and sufficiently accurate approximation of the original dataset. A Bayesian Network created from those rules can serve as an easy to understand visualization of the most relevant failure patterns. In addition, by varying the threshold values of support and confidence that we consider interesting, we are able to control the tradeoff between accuracy of the model and its complexity in an intuitive way. © 2016 IEEE
  • Hamon, Thierry, et al. (författare)
  • Combining Compositionality and Pagerank for the Identification of Semantic Relations between Biomedical Words
  • 2012
  • Ingår i: BioNLP. - 9781937284206 - 1937284204 ; , s. 109-117
  • Konferensbidrag (refereegranskat)abstract
    • The acquisition of semantic resources and relations is an important task for several applications, such as query expansion, information retrieval and extraction, machine translation. However, their validity should also be computed and indicated, especially for automatic systems and applications. We exploit the compositionality based methods for the acquisition of synonymy relations and of indicators of these synonyms. We then apply pagerank-derived algorithm to the obtained semantic graph in order to filter out the acquired synonyms. Evaluation performed with two independent experts indicates that the quality of synonyms is systematically improved by 10 to 15% after their filtering.
  • Norinder, Ulf, et al. (författare)
  • Conformal prediction to define applicability domain - A case study on predicting ER and AR binding
  • 2016
  • Ingår i: SAR and QSAR in environmental research (Print). - : Taylor & Francis Group. - 1062-936X .- 1029-046X. ; 27:4, s. 303-316
  • Tidskriftsartikel (refereegranskat)abstract
    • A fundamental element when deriving a robust and predictive in silico model is not only the statistical quality of the model in question but, equally important, the estimate of its predictive boundaries. This work presents a new method, conformal prediction, for applicability domain estimation in the field of endocrine disruptors. The method is applied to binders and non-binders related to the oestrogen and androgen receptors. Ensembles of decision trees are used as statistical method and three different sets (dragon, rdkit and signature fingerprints) are investigated as chemical descriptors. The conformal prediction method results in valid models where there is an excellent balance in quality between the internally validated training set and the corresponding external test set, both in terms of validity and with respect to sensitivity and specificity. With this method the level of confidence can be readily altered by the user and the consequences thereof immediately inspected. Furthermore, the predictive boundaries for the derived models are rigorously defined by using the conformal prediction framework, thus no ambiguity exists as to the level of similarity needed for new compounds to be in or out of the predictive boundaries of the derived models where reliable predictions can be expected.
  • Bååth, Rasmus, et al. (författare)
  • A prototype based resonance model of rhythm categorization
  • 2014
  • Ingår i: i-Perception. - : Pion Ltd. - 2041-6695. ; 5:6, s. 548-558
  • Tidskriftsartikel (refereegranskat)abstract
    • Categorization of rhythmic patterns is prevalent in musical practice, an example of this being the transcription of (possibly not strictly metrical) music into musical notation. In this article we implement a dynamical systems’ model of rhythm categorization based on the resonance theory of rhythm perception developed by Large (2010). This model is used to simulate the categorical choices of participants in two experiments of Desain and Honing (2003). The model accurately replicates the experimental data. Our results support resonance theory as a viable model of rhythm perception and show that by viewing rhythm perception as a dynamical system it is possible to model central properties of rhythm categorization.
  • Bresin, Roberto, et al. (författare)
  • Auditory feedback through continuous control of crumpling sound synthesis
  • 2008
  • Ingår i: Proceedings of Sonic Interaction Design. - : IUAV University of Venice. - 9788890341304 ; , s. 23-28
  • Konferensbidrag (refereegranskat)abstract
    • A realtime model for the synthesis of crumpling sounds ispresented. By capturing the statistics of short sonic transients which give rise to crackling noise, it allows for a consistent description of a broad spectrum of audible physical processes which emerge in several everyday interaction contexts.The model drives a nonlinear impactor that sonifies every transient, and it can be parameterized depending on the physical attributes of the crumpling material. Three different scenarios are described, respectively simulating the foot interaction with aggregate ground materials, augmenting a dining scenario, and affecting the emotional content of a footstep sequence. Taken altogether, they emphasize the potential generalizability of the model to situations in which a precise control of auditory feedback can significantly increase the enactivity and ecological validity of an interface.
  • Bresin, Roberto (författare)
  • What is the color of that music performance?
  • 2005
  • Ingår i: Proceedings of the International Computer Music Conference - ICMC 2005. - Barcelona. ; , s. 367-370
  • Konferensbidrag (refereegranskat)abstract
    • The representation of expressivity in music is still a fairlyunexplored field. Alternative ways of representing musicalinformation are necessary when providing feedback onemotion expression in music such as in real-time tools formusic education, or in the display of large music databases.One possible solution could be a graphical non-verbal representationof expressivity in music performance using coloras index of emotion. To determine which colors aremost suitable for an emotional expression, a test was run.Subjects rated how well each of 8 colors and their 3 nuancescorresponds to each of 12 music performances expressingdifferent emotions. Performances were playedby professional musicians with 3 instruments, saxophone,guitar, and piano. Results show that subjects associateddifferent hues to different emotions. Also, dark colorswere associated to music in minor tonality and light colorsto music in major tonality. Correspondence betweenspectrum energy and color hue are preliminary discussed.
  • Dahl, Sofia, et al. (författare)
  • Gestures in performance
  • 2009
  • Ingår i: Musical Gestures: Sound, Movement, and Meaning. - New York : Routledge. - 9780415998871 - 0415998875 ; , s. 36-68
  • Bokkapitel (refereegranskat)abstract
    • We experience and understand the world, including music, through body movement–when we hear something, we are able to make sense of it by relating it to our body movements, or form an image in our minds of body movements. Musical Gestures is a collection of essays that explore the relationship between sound and movement. It takes an interdisciplinary approach to the fundamental issues of this subject, drawing on ideas, theories and methods from disciplines such as musicology, music perception, human movement science, cognitive psychology, and computer science.
  • Kerren, Andreas, 1971-, et al. (författare)
  • BioVis Explorer : A visual guide for biological data visualization techniques
  • 2017
  • Ingår i: StaViCTA. - : PLOS. ; 12:11
  • Tidskriftsartikel (refereegranskat)abstract
    • Data visualization is of increasing importance in the Biosciences. During the past 15 years, a great number of novel methods and tools for the visualization of biological data have been developed and published in various journals and conference proceedings. As a consequence, keeping an overview of state-of-the-art visualization research has become increasingly challenging for both biology researchers and visualization researchers. To address this challenge, we have reviewed visualization research especially performed for the Biosciences and created an interactive web-based visualization tool, the BioVis Explorer. BioVis Explorer allows the exploration of published visualization methods in interactive and intuitive ways, including faceted browsing and associations with related methods. The tool is publicly available online and has been designed as community-based system which allows users to add their works easily.
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