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Applying a Text-Based Affective Dialogue System in Psychological Research: Case Studies on the Effects of System Behaviour, Interaction Context and Social Exclusion

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Abstract

This article presents two studies conducted with an affective dialogue system in which text-based system–user communication was used to model, generate and present different affective and social interaction scenarios. We specifically investigated the influence of interaction context and roles assigned to the system and the participants, as well as the impact of pre-structured social interaction patterns that were modelled to mimic aspects of “social exclusion” scenarios. The results of the first study demonstrate that both the social context of the interaction and the roles assigned to the system influence the system evaluation, interaction patterns, textual expressions of affective states, as well as emotional self-reports. The results observed for the second study show the system’s ability to partially exclude a participant from a triadic conversation without triggering significantly different affective reactions or a more negative system evaluation. The experimental evidence provides insights on the perception, modelling and generation of affective and social cues in artificial systems that can be realized in different modalities, including the text modality, thus delivering valuable input for applying affective dialogue systems as tools for studying affect and social aspects in online communication.

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Notes

  1. Participants believe that they communicate with a dialogue system, while responses are actually provided by a human operator. In the presented experiments, the operator was asked to conduct a realistic and coherent dialogue and provided free text input to user utterances.

  2. Studies 2 and 3 included three 7-min-long interactions. No simulation of the thinking and typing delays was used. In both experiments participants were aware that they interact with an artificial system.

  3. Artificial Intelligence Markup Language (AIML).

  4. Consistent affective characteristics are achieved by modifying most of the generated response candidates. Modifications include removing, adding or replacing discovered positive or negative expressions, words and/or emoticons. E.g. for the negative profile, the component removes phrases that contain words, classified as “positive” (e.g., glad, happy, welcome, great, sir, please).

  5. In the following, “negative system”, “neutral system” refer to the specific type of affective profile applied, i.e. negative and neutral, respectively (ref. 3.1, Control Layer).

  6. Applied Annotation Tools and Resources: the analysis of the presented data-set was conducted with a set of natural-language processing and affective processing tools and resources, including: Linguistic Inquiry and Word Count dictionary, ANEW dictionary based classifier, Lexicon-Based Sentiment Classifier, and Support Vector Machine Based Dialogue Act classifier. Further, we analysed timing information and surface features of communication style such as wordiness and usage of emoticons. While the application of such tools and resources cannot always guarantee that all the expressions of affect, linguistic and discourse related cues are correctly detected and classified, in the recent years this set of tools was successfully applied in numerous psychological experiments and extensively evaluated and validated [9, 12, 39, 41, 42, 51, 61, 62] supporting their application for the automatic analysis of text in different domains, such as online and offline texts.

  7. http://www.cyberemotions.eu/.

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Skowron, M., Rank, S., Świderska, A. et al. Applying a Text-Based Affective Dialogue System in Psychological Research: Case Studies on the Effects of System Behaviour, Interaction Context and Social Exclusion. Cogn Comput 6, 872–891 (2014). https://doi.org/10.1007/s12559-014-9271-2

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