Search results for "Information science"
showing 10 items of 3627 documents
Perfil sociodemográfico y actitudes políticas de los grupos a favor y en contra de limitar la libre circulación de información durante la pandemia
2020
The Covid-19 pandemic has produced not only a terrible sanitary crisis but also several problems related to the circulation of disinformation in the context of hybrid and increasingly fragmented media systems. In this work, we analyze a polemical question included in the Center for Sociological Research (CIS) survey conducted in April about the appropriateness of limiting free circulation of information to avoid diffusion of fake news and disinformation. The goals are to (1) analyze the sociodemographic traits of those in favor of limiting the free circulation of information, and (2) explore their general political preferences and affiliations, and the association with attitudes regarding f…
El periodista adaptativo. Consultores y directores de innovación analizan las cualidades del profesional de la comunicación
2016
Desde 2014 los medios de comunicación ya no luchan sólo por sobrevivir. Fundan departamentos de innovación y organizan hackatones para desarrollar nuevos productos, iniciativas que demuestran que el periodismo está mudando su piel, y vive un momento de oportunidades. Atraviesan un proceso de transición, y requieren de perfiles profesionales proactivos y flexibles que conversan con la audiencia, producen informaciones multimedia con sus móviles, utilizan puntualmente drones e incluso realizan documentales informativos con realidad aumentada. En este artículo una decena de consultores y directores de innovación que ejercen su actividad en España, Estados Unidos y Latinoamérica analizan las nu…
Propositions pour une littérature d’investigation
2017
Le temps semble a l’alliance de la litterature et des sciences sociales. Mais les modalites en sont encore incertaines. Au lieu de considerer l’anthropologie comme une forme de litterature, on peut envisager la litterature comme une enquete. Cette « litterature d’investigation » se donne notamment pour objectif de documenter des formes de vie et de monter des dispositifs rendant compte d’aspects inapercus de phenomenes sociaux. Elle occupe ainsi une position intermediaire : elle se menage a la fois une liberte et une creativite relatives vis-a-vis des protocoles d’enquete propres aux sciences sociales et une certaine mefiance pour un respect trop reverencieux envers la litterature.
What Future for the Concept of Culture in the Social Sciences?
2017
International audience
Lotman’s semiotic theory of culture or Laclau’s political ontology?
2018
AbstractThe present article concentrates on the main discrepancies that should arise in the discussion between Lotman’s semiotics of culture and Laclau’s discursive theory of hegemony. Some significant – but still abstract – commonalities conceal fundamental disagreements which I would group around four topics. Firstly, Lotman’s semiotic method is at odds with Laclau’s ontological way of thinking. Secondly, although both Lotman and Laclau subscribe to the openness of signification, it is impossible to incorporate their accounts of this openness without loose ends. In order to substantiate this claim, I examine Lotman’s concept of “boundary” and Laclau’s concept of the “limit.” Thirdly, we s…
Multitemporal unmixing of MERIS FR data
2007
Extracting locations from sport and exercise-related social media messages using a neural network-based bilingual toponym recognition model
2022
Funding: This study is a part of the “Equality in suburban physical activity environments, YLLI” research project (in Finnish: Yhdenvertainen liikunnallinen lähiö, YLLI). The project is being financed by the research program about suburban in Finland “Lähiöohjelma 2020-2022” coordinated by the Ministry of Environment (grant recipient: Dr. Petteri Muukkonen). Sport and exercise contribute to health and well-being in cities. While previous research has mainly focused on activities at specific locations such as sport facilities, “informal sport” that occur at arbitrary locations across the city have been largely neglected. Such activities are more challenging to observe, but this challenge may…
Towards events ontology based on data sensors network for viticulture domain
2018
International audience; Wine Cloud project is the first "Big Data" platform on the french viticulture value chain. The aim of this platform is to provide a complete traceability of the life cycle of the wine, from the wine-grower to the consumer. In particular, Wine Cloud may qualify as an agricultural decision platform that will be used for vine life cycle management in order to predict the occurrence of major risks (vine diseases, grape vine pests, physiological risks, fermentation stoppage, oxidation of vine, etc...). Also to make wine production more rational by offering winegrower a set of recommendation regarding their strategy's of production development. The proposed platform "Wine …
On the stability of some controlled Markov chains and its applications to stochastic approximation with Markovian dynamic
2015
We develop a practical approach to establish the stability, that is, the recurrence in a given set, of a large class of controlled Markov chains. These processes arise in various areas of applied science and encompass important numerical methods. We show in particular how individual Lyapunov functions and associated drift conditions for the parametrized family of Markov transition probabilities and the parameter update can be combined to form Lyapunov functions for the joint process, leading to the proof of the desired stability property. Of particular interest is the fact that the approach applies even in situations where the two components of the process present a time-scale separation, w…
Coupled conditional backward sampling particle filter
2020
The conditional particle filter (CPF) is a promising algorithm for general hidden Markov model smoothing. Empirical evidence suggests that the variant of CPF with backward sampling (CBPF) performs well even with long time series. Previous theoretical results have not been able to demonstrate the improvement brought by backward sampling, whereas we provide rates showing that CBPF can remain effective with a fixed number of particles independent of the time horizon. Our result is based on analysis of a new coupling of two CBPFs, the coupled conditional backward sampling particle filter (CCBPF). We show that CCBPF has good stability properties in the sense that with fixed number of particles, …