professional activities (last 5 years)



  2017
  associate editor
  pacm imwut: proceedings of the acm on interactive, mobile, wearable and ubiquitous technologies

  steering committees
  icmi: steering committee member, acm int. conf. on multimodal interaction

  program committee member
  www: world wide web conference
  icwsm: aaai int. conf. on weblogs and social media

  2016
  committees
  icmi: acm int. conf. in multimodal interaction, paper award chair

  program committee member
  www: world wide web conference
  icwsm: aaai int. conf. on weblogs and social media
  ubicomp: acm int. joint conference on pervasive and ubiquitous computing

  keynotes and invited talks
  eccv: workshop on apparent personality analysis
  cbmi: int. workshop on content-based multimedia indexing
  essentialtalk: epfl cooperation and development center series

  reviewer
  cscw: acm int. conf. on computer-supported collaborative work and social computing

  2015
  committees
  icmi: steering committee chair, acm int. conf. on multimodal interaction

  organizer
  ubicomp/iswc: acm int. joint conference on pervasive and ubiquitous computing / int. symposium on wearable computers, general co-chair

  program committee member
  www: world wide web conference
  icwsm: aaai int. conf. on weblogs and social media

  invited talks
  EMC: European Maya Conference: The Maya in a Digital World
  ICMI ASSP4MI: International Workshop on Advancements in Social Signal Processing for Multimodal Interaction
  3TU.H&T/SIKS: Autumn School on Humans and Technology
  SMART: LABEX School on Computational Social and Behavioral Sciences

  reviewer
  cscw: acm int. conf. on computer-supported collaborative work and social computing

  2014
  committees
  icmi: steering committee chair, acm int. conf. on multimodal interaction

  organizer
  wcpr: int. workshop on computational personality recognition

  invited talks
  hbu: int. workshop on human behavior understanding
  lt-innovate: lt-innovate language technology summit
  icmi: int. workshop on multi-party real-world human-robot interaction

  program committee member
  www: world wide web conference
  icwsm: aaai int. conf. on weblogs and social media
  iswc: ieee int. symp. on wearable computing
  icmi: acm int. conf. on multimodal interaction

  reviewer
  ubicomp: acm int. joint conf. on pervasive and ubiquitous computing

  2013
  committees
  icmi: steering committee chair, acm int. conf. on multimodal interaction

  organizer
  mm: acm int. conf. on multimedia, program co-chair
  iswc: ieee int. symp. on wearable computing, program co-chair

  guest editor
  tmm: ieee trans. on multimedia, special issue on social media as sensors
  pmc: pervasive and mobile computing, mobile data challenge special issue

  invited talks, tutorials, panels
  crowdmm: acm int. workshop on crowdsourcing for multimedia
  pdm: acm int. workshop on personal data meets distributed multimedia
  icwsm: aaai int. conf. on weblogs and social media, workshop on computational personality recognition
  iCareNet: winter school on context-aware systems

  program committee member
  www: world wide web conference
  mcss: acm ubicomp workshop on mobile systems for computational social science
  2012
  organizer
  mdc: nokia mobile data challenge
  icmi: int. conf. on multimodal interaction, multimodal grand challenges
  mm: acm multimedia, open source software competition
  smane: www int. workshop on social media applications in news and entertainment

  associate editor
  tmm: ieee transactions on multimedia
  ivc: image and vision computing

  guest editor
  tmm: ieee trans. on multimedia, special issue on social media as sensors
  pmc: pervasive and mobile computing, mobile data challenge special issue

  invited talks and tutorials
  wsc: ec/chorus+ int. workshop on search computing
  tedx: TEDxMartigny
  ssms: summer school on social media modeling and search
  mcss: acm workshop on mobile systems for computational social science
  aerfaiss: summer school on pattern recognition in multimodal human interaction
  siu: ieee signal processing and communication applications conference

  program committee member
  www: world wide web conference
  icwsm: aaai int. conf. on weblogs and social media
  iswc: ieee int. symposium on wearable computers
  mdm: ieee int. conf. on mobile data management
  mum: int. conf. on mobile and ubiquitous multimedia
  mcss: acm mobisys workshop on mobile systems for computational social science
  ms-ipsn: acm/ieee ipsn workshop on mobile sensing: from smartphones and wearables to big data

  reviewer
  pervasive: int. conf. on pervasive computing
  chi: acm conf. on human factors in computing systems
  iui: int. conf. on intelligent user interfaces

  2011
  associate editor
  tmm: ieee transactions on multimedia
  jaise: journal of ambient intelligence and smart environments
  ivc: image and vision computing
  mva: machine vision and applications

  guest editor
  tmm: ieee trans. on multimedia, special issue on learning semantics from multimedia web resources

  organizer
  icmi: acm int. conf. on multimodal interaction, program co-chair
  sba: ieee int. workshop on social behavior analysis

  invited talks
  uiuc: the year of social media, public event series, univ. of illinois at urbana-champaign
  vision 2020: european commission think tank meeting, networked media vision 2020, brussels
  maw: telefonica multimedia analysis workshop, telefonica i+d, barcelona
  recpad: portuguese conference on pattern recognition, porto

  program committee member
  mm: acm int. conf. on multimedia, area chair on mobile multimedia
  icwsm: aaai int. conf. on weblogs and social media
  iccv: ieee int. conf. on computer vision
  aaai: aaai conf. on artificial intelligence, physically grounded AI track
  icmr: acm int. conf. on multimedia retrieval
  mdm: int. conf. on mobile data management
  mum: int. conf. on mobile and ubiquitous multimedia

  reviewer
  ubicomp: acm int. conf. on ubiquitous computing
  chi: acm conf. on human factors in computing systems