Search results for "Format"
showing 10 items of 24643 documents
Les modalités iconiques dans le discours médié par ordinateur: du neuf dans l'interaction?
2018
Graphic modalities (emoticons, emoji, GIF…) are often presented as one of the distinctive features of computer-mediated interaction. In what may be the first reference book on computer-mediated communication (also known as CMC), American linguist Susan C. Herring goes as far as calling them a “unique feature” of digital interaction (Herring 1996, 3). Since then, many linguists have tempered this view and shown that graphic modalities are by no means specific to CMC. However, they remain one of its salient features. Are they, then, to be considered as an evolution or a revolution in interaction? The real question is indeed what they bring to computer-mediated communication, and their status …
Ecologists overestimate the importance of predictor variables in model averaging: a plea for cautious interpretations.
2014
Abstract: Information-theory procedures are powerful tools for multimodel inference and are now standard methods in ecology. When performing model averaging on a given set of models, the importance of a predictor variable is commonly estimated by summing the weights of models where the variable appears, the so-called sum of weights (SW). However, SWs have received little methodological attention and are frequently misinterpreted. We assessed the reliability of SW by performing model selection and averaging on simulated data sets including variables strongly and weakly correlated to the response variable and a variable unrelated to the response. Our aim was to investigate how useful SWs are …
Model selection procedure for mixture hidden Markov models
2021
This paper proposes a model selection procedure to identify the number of clusters and hidden states in discrete Mixture Hidden Markov models (MHMMs). The model selection is based on a step-wise approach that uses, as score, information criteria and an entropy criterion. By means of a simulation study, we show that our procedure performs better than classical model selection methods in identifying the correct number of clusters and hidden states or an approximation of them
An EEMD Aided Comparison of Time Histories and Its Application in Vehicle Safety
2017
In the context of signal processing, the comparison of time histories is required for different purposes, especially for the model validation of vehicle safety. Most of the existing metrics focus on the mathematical value only. Therefore, they suffer the measuring errors, disturbance, and uncertainties and can hardly achieve a stable result with a clear physical interpretation. This paper proposes a novel scheme of time histories comparison to be used in vehicle safety analysis. More specifically, each signal for comparison is decomposed into a trend signal and several intrinsic mode functions (IMFs) by ensemble empirical mode decomposition. The trend signals reflect the general variation a…
Wartość informacji w systemie informacyjnym w ocenie jej jakości
2018
Celem artykułu jest ustalenie, w jakim zakresie i w jaki sposób należy dokonywać ewaluacji wartości informacji dostępnej w systemie informacyjnym podczas oceny jej jakości. Taka ocena, zwłaszcza dla systemów działających w Internecie, jest bezwzględnie konieczna z powodu nieustannego, bardzo szybkiego powiększania się dostępnych tam zasobów informacji, ponoszenia zbędnych kosztów ekonomicznych ich złej jakości oraz związanych z tym nowych, niekorzystnych zjawisk społecznych. Jakość informacji jest kategorią wielowymiarową i wymaga oceny bardzo wielu różnych atrybutów. Czy wśród konceptualnych modeli oceny jakości informacji są takie, które wymagają również dokonywania oceny wartości informa…
La rappresentazione digitale: versatilità per l'indagine e la ri-progettazione del patrimonio architettonico. Elaborazione dei dati per la costruzion…
2008
1919-2019: ritorno all’entropia Un progetto pilota practice-oriented per una formazione transdisciplinare del designer
2020
In un articolo pubblicato da Domus nel 1998 John Thackara sosteneva che il destino del design sarebbe stato l’entropia, presentando possibili e stimolanti vie di fuga da tale dimensione. A 20 anni da questa affermazione e a 100 anni dal Bauhaus, si avverte la necessità di immaginare un’offerta formativa altrettanto visionaria e coraggiosa come quella di Weimar, in grado di assumere l’entropia descritta da Thackara in una nuova prospettiva. Se il progetto culturale di Gropius metteva al centro la trasversalità fra ambiti e saperi diversi, oggi occorre dare una nuova interpretazione a questo atto fondativo, in termini altrettanto ambiziosi, a partire da alcuni interrogativi: che sembianze ass…
A unifying framework for specifying generalized linear models for categorical data
2013
International audience; In the context of categorical data analysis, the case of nominal and ordinal data has been investigated in depth while the case of partially ordered data has been comparatively neglected. We first propose a new specification of generalized linear models (GLMs) for categorical response variables which en- compasses all the classical models such as multinomial logit, odds proportional or continuation ratio models but also led us to identify new GLMs. This unifying framework makes the different GLMs easier to compare and combine. We then define the more general class of partitioned conditional GLMs for categorical re- sponse variables. This new class enables to take int…
Bacheliers, étudiants et jeunes diplômés : quels systèmes migratoires régionaux ?
2006
Since French Society enters the so-called “Economy of knowledge”, migrations of young people, especially these concerning higher education graduates, are of most interests. Despite the fact that it could help to understand relations between University and work market and ways regions can evolve, the study of migrations of young people was not yet done. A set of results highlights first the main role of French capital region. It shows also main similarities and differencies of migratories' behavior.
Le numérique à l’université : facteur explicatif des méthodes pédagogiques ?
2018
Cet article a une double ambition. Il vise premièrement à mettre l’accent sur les méthodes pédagogiques déployées à l’université par les enseignants en cours magistral et en travaux pratiques et travaux dirigés. Il s’intéresse dans un second temps à l’utilisation du numérique par les enseignants, pendant et en dehors des heures de cours, comme facteur explicatif des méthodes pédagogiques mises en place. Ainsi, à partir des données recueillies au travers une enquête empirique menée auprès d’un échantillon composé de 248 enseignants d’une université française, nous proposons une description des méthodes pédagogiques mobilisées par ces derniers. Puis, nous avons construit des modèles de régres…