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Human-Computer dialogue Developing a Dialogue Editor to Script Interaction between Virtual Characters and Social Phobic Patients !


  1. Human-Computer dialogue Developing a Dialogue Editor to Script Interaction between Virtual Characters and Social Phobic Patients ����������������� ������!� �"������#������ �#����$�"����%���&$�� ��������� ����� ������������� ���������� ��������������������

  2. Overview • VRET • Social phobia • Dialogue • Creation • Editor • Evaluation • Pilot study • Setup • Results • Experiment •Preliminary results � Human-Computer Dialogue

  3. 1. Virtual Reality Exposure Therapy VRET � Human-Computer Dialogue

  4. VRET Phobias ( �%� �)��*��� ( *+,���������������%� • -����������� "������������3 ����� (*+,�������� • .�������.����� �������� �������� �/0����� • 1���0��2�� • ��������0��2�� • "�/� • /������"��2��� ' Human-Computer Dialogue

  5. ����0�����������$�����05667773��0��2��3��$ 4 Human-Computer Dialogue

  6. VRET Social Phobia ( /������"��2�� • ��9��/�0�0������� • )$0�����������6������ <������������3 ��==' ( �%�� • ��$����������������������� ���$���������3 ��=== ( ,:�������*+,��7����� • "��������0����1������ • ��$0�����1��$���� • ;�$������0���������������� 8 Human-Computer Dialogue

  7. ����������������������� ����������������������� > Human-Computer Dialogue

  8. ������� ������ ��������������������������� �������������������������� � Human-Computer Dialogue

  9. VRET Social Phobia ( .�����������/0���������������� • .�����0���� • �����0������������ • /���0������������ • ��:����������� • /$��������0�������0����� • .����?��������@��0�����?0������@ • <��7��������������?��$0����@ = Human-Computer Dialogue

  10. 2. Dialogue �� Human-Computer Dialogue

  11. Dialogue Creation • Structured and controlled dialogue • Question -> Response structure • Neutral topic • Guiding Questions • Response groups • Keyword • Yes/No • Attitude • Unknown • Length • General • Question �� Human-Computer Dialogue

  12. Dialogue Editor ( ������������� • Computer -> User -> Computer • Question -> Response -> Computer Response • Complexity grows quickly • Special tool needed �� Human-Computer Dialogue

  13. Dialogue Editor3 ( ���������������������� ( ,������ • ,��������������������������� • /�00��������2������$������ • -���������$����� • �������������$����� • /�������������� • ��������/!;��������2��� ( A�����������������0����� �� Human-Computer Dialogue

  14. �' Human-Computer Dialogue

  15. �4 Human-Computer Dialogue

  16. �8 Human-Computer Dialogue

  17. �> Human-Computer Dialogue

  18. Dialogue Evaluation • Iterative design dialogue • MSN Chatbot • 4 topics selected • Keywords added *����� �������� � �������� �������� � #����+,�-� #����$�%�&� �������� � �������� � �������� !�������� �������� � ��'(��$!� �������� � � ��&��� %����)�%���! ��'(��$!� "��!����! ��'(��$! � ���(��$! �!�������! &��! ��3�� = �3� � ' �� � ��$������ ?�3=@ ��38� � �34 �� �� �� �� .����� ?�3�@ ��3�� � �3= � �� 4 � ���� ?�3�@ ��3�� �� �38 �� �8 8 4 "������� ?�3�@ �� Human-Computer Dialogue

  19. 3. Pilot Study �= Human-Computer Dialogue

  20. Pilot Study Setup (Movie) • 4 Participants • 3D world projected on screen • Participants alone in the room • Audio interaction • 4 Testing conditions • Speech detection • Speech recognition (limited keywords) • Speech recognition (keywords) • Human controlled �� Human-Computer Dialogue

  21. Pilot Study Results • Used same keywords • Spoke longer and more elaborate • Responses on content increased realism • Waiting time before response decrease realism �� Human-Computer Dialogue

  22. 3. Experiment �� Human-Computer Dialogue

  23. Experiment Setup / remarks • 24 participants • Dutch, Adults • Participant remarks • Short avatar introduction of them selves • To intensive staring • Responses on content increase presence (reported) • Delay in response decreased presence (reported) �� Human-Computer Dialogue

  24. Experiment Preliminary results • Dialog interaction speed • F(3,21) = 11.49 p = 0.001 �' Human-Computer Dialogue

  25. Experiment Preliminary results • Interaction Feeling • F(3,21) = 11.878 p = 0.001 �4 Human-Computer Dialogue

  26. Experiment Preliminary results • Interaction Reality • F(3,21) = 3.921 p = 0.023 • Speech Detector / Human Control F(1,23) = 0.538 p = 0.471 �8 Human-Computer Dialogue

  27. Experiment Preliminary results • Dialog Flow Interruptions • F(3,21) = 3.208 p = 0.044 Therapist liked the interruptions �> Human-Computer Dialogue

  28. Future improvements • Reponses on long answers • Allow questions • Decrease response times • Analyze when speaking • Faster protocols • Sharper timings • More natural avatar movements • Anxiety increasing computer responses �� Human-Computer Dialogue

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