Search results for "twitter"
showing 10 items of 207 documents
Twitter as a tool for teaching and communicating microbiology: the #micromoocsem initiative
2016
López-Goñi, Ignacio et al.
Coupling News Sentiment with Web Browsing Data Improves Prediction of Intra-Day Price Dynamics
2015
The new digital revolution of big data is deeply changing our capability of understanding society and forecasting the outcome of many social and economic systems. Unfortunately, information can be very heterogeneous in the importance, relevance, and surprise it conveys, affecting severely the predictive power of semantic and statistical methods. Here we show that the aggregation of web users' behavior can be elicited to overcome this problem in a hard to predict complex system, namely the financial market. Specifically, our in-sample analysis shows that the combined use of sentiment analysis of news and browsing activity of users of Yahoo! Finance greatly helps forecasting intra-day and dai…
Estructura urbana y movilidad en el área metropolitana de Valencia: Co-evolución histórica (1902-2017) y dinámicas actuales a través de nuevas fuente…
2021
La tesis doctoral tiene como objetivo analizar la relación entre la estructura urbana y la movilidad en el Área Metropolitana de Valencia. El análisis consta de dos fases: un estudio evolutivo del área (1902,1943, 1987, 2017) y un análisis de la situación actual. Uno de los mayores retos del estudio evolutivo ha sido reconstruir la información desde principios de siglo para obtener variables comparables (morfología urbana, medios de transporte y localización de la población). El encaje teórico entre ellas es la Ley de Zahavi (1974), que establece que los tiempos medios de desplazamiento diario son constantes, por lo que el motivo por el cual se habitan espacios cada vez más lejanos es el au…
Twitter en campagne politique : un exemple d’objet pour une étude interdisciplinaire en Humanités Numériques
2017
National audience; A partir de l’expérience du projet « Twitter aux Elections Européennes 2014 » développé, avec des partenaires dans 5 pays, à la Maison des Sciences de l’Homme de Dijon, la communication se concentrera sur les questions méthodologiques d’appréhension et d’exploitation d’un corpus numérique natif issu du dispositif de micro-blogging Twitter. Une attention particulière sera ainsi accordée aux opérateurs du dispositif (@, #, RT, http://) et ce qu’ils peuvent signifier en termes d’interaction médiée par ordinateur. On montrera dans quelle mesure ils rendent nécessaire une redéfinition de catégories de base en analyse du discours (qu’elle soit strictement linguistique ou davant…
La « mise en formule » par les hashtags : analyse de nouvelles formes « ultra-brèves » dans les tweets de campagne des européennes (2014)
2017
National audience; La communication, basée sur un corpus de tweets en français et en allemand compilé pendant la campagne électorale pour les élections européennes de 2014, interroge les relations potentielles entre les hashtags et la notion de "formule" telle qu'elle a été développée en analyse du discours. Elle s'intéresse en particulier à la question du rôle des hashtags comme réducteur et démultiplicateur de la brièveté intrinsèque des tweets.
Tecnhiques for sentiment analysis in Twitter: Supervised Learning and SentiStrength
2017
[EN] Sentiment analysis on Twitter offers possibilities of great interest to evaluate the currents of opinion disseminated through this medium. The huge volumes of texts require tools able to automatically process these messages without losing reliability. This paper describes two different types of approaching this problem. The first strategy is based on Supervised Learning processes, developed in the field of artificial intelligence. Its application requires some tools from natural language processing along with a classifed corpus as a starting point. The second approach is based on polarity dictionaries. SentiStrength tool is located in this line. It is increasingly applied to studies of…
The matching effect in persuasive communication about lockdown
2022
Scientific literature about persuasion has shown that the effectiveness of persuasive communication may depend on the match between the affective or cognitive contents of the message and the affective (Need for Affect) or cognitive (Need for Cognition) orientation of the recipient. The present work aims to contribute to studying this effect by considering the context of health-related communication during the SARS-CoV-2 infection. Specifically, we aim to demonstrate that, when the message is characterized by affective and cognitive contents having the same (congruent message) or different valence (incongruent message), the attitude towards the target (i.e., a new lockdown) will be guided by…
An approach for influence estimatation in complex networks : application to the social network Twitter
2019
Influence in complex networks and in particular Twitter has become recently a hot research topic. Detecting most influential users leads to reach a large-scale information diffusion area at low cost, something very useful in marketing or political campaigns. In this thesis, we propose a new approach that considers the several relations between users in order to assess influence in complex networks such as Twitter. We model Twitter as a multiplex heterogeneous network where users, tweets and objects are represented by nodes, and links model the different relations between them (e.g., retweets, mentions, and replies).The multiplex PageRank is applied to data from two datasets in the political…
“The war is over”. Militarizing the language and framing the Nation in post-Brexit discourse
2020
This chapter analyzes the militarization of political language in digital contexts in the post-Brexit discourse, and how such militarization, which is often constitutive of hate speech, contributes to framing an “exclusive” concept of the nation whose meaning is reproduced and circulated (as well as challenged) in society. It will address the role of emotions and hate in language in fueling and aggregating online communities around a key political issue, i.e. the Brexit negotiations, and a core cultural and social concept, i.e. the nation. The militarization of language, which is based on certain discursive structures, e.g. war metaphors (Lakoff and Johnson 1980, Musolff 2020), is one of th…
Leader of my Heart!
2015
The first decade of the twenty-first century has witnessed the emergence of ‘new’ media technologies which have contributed to reshaping the relationships between politicians, journalists and the general public in Western democracies and around the world (Fox and Ramos, 2012; Lilleker and Jackson, 2013). After diverse early attempts in several countries to harness these new tools during election periods, their use by Barack Obama’s campaign team in the 2008 US presidential elections is often cited as one of the first examples in which they appeared to contribute positively to mobilising sympathisers and party activists around the campaign (Thimm, 2011). In the subsequent 2010 UK general ele…