Publications de Oya Aran | EPFL Graph Search

An HMM Approach with Inherent Model Selection for Sign Language and Gesture Recognition

Mathew Magimai Doss, Oya Aran, Sandrine Tornay

HMMs have been the one of the first models to be applied for sign recognition and have become the baseline models due to their success in modeling sequential and multivariate data. Despite the extensive use of HMMs for sign recognition, determining the HMM ...

EUROPEAN LANGUAGE RESOURCES ASSOC-ELRA2020

Modeling Dyadic and Group Impressions with Inter-Modal and Inter-Person Features

Laurent Son Nguyen, Daniel Gatica-Perez, Oya Aran

This article proposes a novel feature-extraction framework for inferring impression personality traits, emergent leadership skills, communicative competence, and hiring decisions. The proposed framework extracts multimodal features, describing each partici ...

2018

Rapport with Virtual Agents: What do Human Social Cues and Personality Explain?

Daniel Gatica-Perez, Oya Aran

Rapport has been recognized as an important aspect of relationship building. While rapport in the context of human-human interaction has been widely studied, how it can be established and maintained in human-agent interaction has been studied only recently ...

2017

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

Predicting the Performance in Decision-Making Tasks: From Individual Cues to Group Interaction

Oya Aran

2016

Modeling annotator behaviors for crowd labeling

Oya Aran

Machine learning applications can benefit greatly from vast amounts of data, provided that reliable labels are available. Mobilizing crowds to annotate the unlabeled data is a common solution. Although the labels provided by the crowd are subjective and no ...

2015

Brief Introduction to the Special Issue on Behavior Understanding for Arts and Entertainment

Oya Aran

This editorial introduction describes the aims and scope of the special issue of the ACM Transactions on Interactive Intelligent Systems on Behavior Understanding for Arts and Entertainment, which is being published in issues 2 and 3 of volume 5 of the jou ...

2015

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

Using Modality Replacement to Facilitate Communication between Visually and Hearing-Impaired People

Oya Aran

Using sign language, speech, and haptics as communication modalities, a virtual treasure-hunting game serves as an entertainment and educational tool for visually and hearing impaired users. In recent years, there has been an increasing interest in human-c ...

2011

A Multi-class Classification Strategy for Fisher Scores: Application to Signer Independent Sign Language Recognition

Oya Aran

Fisher kernels combine the powers of discriminative and generative classifiers by mapping the variable-length sequences to a new fixed length feature space, called the Fisher score space. The mapping is based on a single generative model and the classifier ...

2010