Publications by Dairazalia Sanchez Cortes

Vlogging Over Time: Longitudinal Impressions and Behavior in YouTube

Daniel Gatica-Perez, Dinesh Babu Jayagopi, Dairazalia Sanchez Cortes

YouTube vlogging, as a popular genre of ubiquitous social video, engages people in entertainment, civic, and social activities. Although several aspects of vlogging have been studied in media studies and multimedia analysis, the longitudinal angle of vlogg ...

ASSOC COMPUTING MACHINERY2018

Anomaly detection in elderly daily behavior in ambient sensing environments

Daniel Gatica-Perez, Dairazalia Sanchez Cortes, Oya Aran

Current ubiquitous computing applications for smart homes aim to enhance people’s daily living respecting age span. Among the target groups of people, elderly are a population eager for “choices for living arrangements”, which would allow them to continue ...

Springer Int Publishing Ag2016

In the Mood for Vlog: Multimodal Inference in Conversational Social Video

Daniel Gatica-Perez, Dairazalia Sanchez Cortes

The prevalent “share what’s on your mind” paradigm of social media can be examined from the perspective of mood: short-term affective states revealed by the shared data. This view takes on new relevance given the emergence of conversational social video as ...

Assoc Computing Machinery2015

Computational Methods for Audio-Visual Analysis of Emergent Leadership in Teams

Dairazalia Sanchez Cortes

Face-to-face interactions are part of everyday life, ranging from family to working in teams and to global communities. Social psychologists have long studied these interactions with the aim of understanding behavior, motivations, and emergence of interact ...

EPFL2013

Emergent leaders through looking and speaking: from audio-visual data to multimodal recognition

Daniel Gatica-Perez, Dinesh Babu Jayagopi, Dairazalia Sanchez Cortes, Oya Aran

In this paper we present a multimodal analysis of emergent leadership in small groups using audio-visual features and discuss our experience in designing and collecting a data corpus for this purpose. The ELEA Audio-Visual Synchronized corpus (ELEA AVS) wa ...

2013

A Nonverbal Behavior Approach to Identify Emergent Leaders in Small Groups

Daniel Gatica-Perez, Dairazalia Sanchez Cortes, Oya Aran

dentifying emergent leaders in organizations is a key issue in organizational behavioral research, and a new problem in social computing. This paper presents an analysis on how an emergent leader is perceived in newly formed, small groups, and then tackles ...

2012