Affect and believability in game characters:a review of the use of affective computing in games

Virtual agents are important in many digital environments. Designing a character that highly engages users in terms of interaction is an intricate task constrained by many requirements. One aspect that has gained more attention recently is the effective dimension of the agent. Several studies have addressed the possibility of developing an affect-aware system for a better user experience. Particularly in games, including emotional and social features in NPCs adds depth to the characters, enriches interaction possibilities, and combined with the basic level of competence, creates a more appealing game. Design requirements for emotionally intelligent NPCs differ from general autonomous agents with the main goal being a stronger player-agent relationship as opposed to problem solving and goal assessment. Nevertheless, deploying an affective module into NPCs adds to the complexity of the architecture and constraints. In addition, using such composite NPC in games seems beyond current technology, despite some brave attempts. However, a MARPO-type modular architecture would seem a useful starting point for adding emotions

Leveraging contextual-cognitive relationships into mobile commerce systems

A thesis submitted to the University of Bedfordshire in partial fulfilment of the requirements for the degree of Doctor of PhilosophyMobile smart devices are becoming increasingly important within the on-line purchasing cycle. Thus the requirement for mobile commerce systems to become truly context-aware remains paramount if they are to be effective within the varied situations that mobile users encounter. Where traditionally a recommender system will focus upon the user – item relationship, i.e. what to recommend, in this thesis it is proposed that due to the complexity of mobile user situational profiles the how and when must also be considered for recommendations to be effective. Though non-trivial, it should be, through the understanding of a user’s ability to complete certain cognitive processes, possible to determine the likelihood of engagement and therefore the success of the recommendation. This research undertakes an investigation into physical and modal contexts and presents findings as to their relationships with cognitive processes. Through the introduction of the novel concept, disruptive contexts, situational contexts, including noise, distractions and user activity, are identified as having significant effects upon the relationship between user affective state and cognitive capability. Experimental results demonstrate that by understanding specific cognitive capabilities, e.g. a user’s perception of advert content and user levels of purchase-decision involvement, a system can determine potential user engagement and therefore improve the effectiveness of recommender systems’ performance. A quantitative approach is followed with a reliance upon statistical measures to inform the development, and subsequent validation, of a contextual-cognitive model that was implemented as part of a context-aware system. The development of SiDISense (Situational Decision Involvement Sensing system) demonstrated, through the use of smart-phone sensors and machine learning, that is was viable to classify subjectively rated contexts to then infer levels of cognitive capability and therefore likelihood of positive user engagement. Through this success in furthering the understanding of contextual-cognitive relationships there are novel and significant advances that are now viable within the area of m-commerce

Internet art and interaction: a study into the creation of a taxonomy of interaction in online art works

Using the hypothesis that interaction with net art can be categorised, the primary purpose of the research was to generate a taxonomy of this interaction. Emphasis is given to interactive web based works that require the user to participate by contributing material to the piece. An initial period of contextualisation was required to position net art within contemporary arts culture this included an examination of previous attempts at categorising interactivity and the exploration of connected historical art practices. Most previous attempts at categorisation either characterise types of interactive work, or detail specific interactive characteristics the work itself may have. This aim of this thesis was to take an alternative approach by focusing on the interaction itself in order to create a taxonomy. To establish this characterisation of interactivity, several practical pieces of internet art were created that doubled as data collection tools. The main outcome of this project resulted in the development of my own Connected, Partially Connected and Unconnected ( C.P.U.) model of interactivity. This in turn necessitated the examination of the interactive process which resulted in defining a loop of interaction . This loop of interaction specifies several separate phases to the interactive process, the C.P.U. model of interactivity occupying one of these phases. This thesis primarily provides a platform with which to further interrogate interaction with net art. An unexplored area of Human Computer Interaction (HCI) that is specific to net art has been identified and is therefore of use to theorists and researchers working in this area. It is also of use to artists enabling them to better understand how interaction is understood within the context of their own practice

Emotions in archetypal media content

Emotion is an intriguing and mysterious psychological phenomenon. While everyone seems to know what it is, researchers have not yet come to consensus on its definition, and many questions still remain unanswered. While the nature of emotion is yet to discover, the design community has noticed is importance, and poses the challenge of how emotion could inform design. We see the necessity to follow the state of the art in psychology and initiate the undertaking by exploring the emotional qualities in various types of media content. The first part of this thesis aims at constructing a theoretical framework. Recent years have seen empirical studies suggest that emotion could be unconscious. While this is to be further justified, scientists are motivated to reconsider current theories of emotion to account for this phenomenon. In light of this, we integrate these studies about unconscious emotion into our literature review. An overview from theory to practice is illustrated to provide a reference for viewing the current states in application domains, such as affective computing and emotional design. This review offers a holistic understanding about emotion from various perspectives, which allow us to look for new directions in future studies. Based on our review, we see a promising direction by applying psychoanalysis methods to analyze the media content as affective stimuli, and these stimuli can be evaluated by using quantitative measures to investigate the connection between the content and the corresponding emotions. The analysis on the media content is based on a psychoanalysis theory¿the theory of archetypes¿proposed by Carl Jung. He argues that there exists a universal pattern in humans¿ unconscious thoughts, which can be manifested as symbolic content in various forms of narratives, such as myth and fairy tales. Today, this archetypal symbolic content can be seen in modern media, particularly in movies. By applying the Jungian approach, we analyzed the symbolic meaning in movie scenes and edit these feature scenes into a collection of archetypal media content, which serve as the experimental materials for later explorations. In the second part of this thesis, we present three experimental studies that aim at determining if archetypal media content can be differentiated based on emotional responses. We adopted the psychoanalytical approach described earlier to collect feature scenes in movies as archetypal media content. Meanwhile, affective stimuli of explicit emotions are also included as benchmarks for comparison, such as sadness and joy. Self-reports and physiological signals are both adopted for measuring emotional responses. These three studies follow similar experimental design: presenting stimuli and measuring emotion concurrently. The results of these studies confirm that emotions induced by archetypal content are different from explicit emotions, and the statistical analysis further indicate that the predictive model obtained from physiological signals outperforms the model generated from self-reports while viewing archetypal media content. These results, however, are opposite to the results gained from affective stimuli of explicit emotions, leading us to the conclusion that archetypal media content might induce unconscious emotions, and physiological signals are more effective than self-reports for recognizing emotions induced by archetypal media content.La emoción es un fenómeno psicológico intrigante y misterioso. Aunque todo el mundo parece saber lo que es, los investigadores aún no han llegado a un consenso sobre su definición, y todavía quedan muchas preguntas sin respuesta. Si bien la naturaleza de las emociones está aún por descubrir, la comunidad de profesionales del diseño ha entendido su importancia, y se plantea el desafío de interrelacionar ambos mundos, explorando de las cualidades emocionales en diversos tipos de contenido en medios de comunicación. La primera parte de esta tesis tiene como objetivo la construcción de un marco teórico. Recientemente se han realizado estudios empíricos que sugieren que las emociones puede ser inconscientes. Si bien esto debe justificarse mejor, los científicos están motivados a reconsiderar las teorías actuales de la emoción para explicar este fenómeno. En vista de ello, integramos estos estudios sobre las emociones inconscientes en nuestra revisión de referencias bibliográficas incluyendo dominios de aplicación recientes, tales como la Computación Afectiva y el Diseño Emocional. Una dirección prometedora de investigación se basa en la aplicación de métodos del psicoanálisis para analizar contenidos multimedia como estímulos afectivos, y estos estímulos pueden ser evaluados mediante el uso de medidas cuantitativas para investigar la conexión entre el contenido y las emociones correspondientes. Este análisis se basa en la teoría de los arquetipos propuesto por el psicólogo Carl Jung. El autor sostiene que existe una patrón universal en los pensamientos inconscientes de los personas, que puede manifestarse como un símbolo contenido en las diversas formas de narrativas, como en los mitos y los cuentos de hadas. Hoy en día, estos arquetipos de contenido simbólico se puede ver frecuentemente en los contenidos multimedia modernos, sobre todo en las películas. Mediante la aplicación del enfoque de Jung, analizamos el significado simbólico en escenas de películas seleccionando las correspondientes a diversos arquetipos, que servirá como material experimental para exploraciones posteriores. En la segunda parte de esta tesis, se presentan tres estudios experimentales que apuntan a determinar si el contenido multimedia arquetípico puede diferenciarse en base a respuestas emocionales. Con el enfoque psicoanalítico descrito anteriormente para los arquetipos, también se incluye los estímulos afectivos de emociones explícitas son como puntos de referencia para la comparación, como la tristeza y la alegría. Se realizan auto-informes y se miden señales fisiológicas para la determinación de las respuestas emocionales en todos los experimentos realizados. Los resultados de estos estudios confirman que las emociones inducidas por arquetipos son diferentes de las emociones explícitas, y el análisis estadístico indica además que el modelo predictivo obtenido a partir de señales fisiológicas supera el modelo generado por los auto-informes durante la visualización de contenidos multimedia arquetípicos. Estos resultados, sin embargo, son opuestos a los resultados obtenidos a partir de los estímulos afectivos de emociones explícitas, llevándonos a la conclusión de que los contenidos de los medios arquetípicos podría inducir emociones inconscientes, y que las señales fisiológicas son más eficaces que los auto informes para el reconocimiento de las emociones inducidas por el contenido de medios arquetípico. En la tercera parte de esta tesis, exploramos cómo los contenidos arquetípicos podrían utilizarse para diseñar contenido multimedia mediante "mood boards". Se realizaron dos estudios con diseñadores para responder a la pregunta de investigación de si es posible generar contenido emocionalmente rico a través de la generación automática de contenido arquetípico por "mood boards" en comparación con el contenido multimedia no arquetípico