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Modeling Emotion Frameworks Useful In Computation and Speech

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What makes E. relevant to Computation? What makes E. relevant to ... Judgement (Damasio) Intentionality, Agency and Emotion (Ableson) Goal Action Causal Inst. ... – PowerPoint PPT presentation

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Title: Modeling Emotion Frameworks Useful In Computation and Speech


1
Modeling EmotionFrameworks Useful In Computation
and Speech

Frank Enos
2
Overview
  • General Questions
  • Approaches to Describing Emotion
  • Theoretical Models of Emotion
  • Some Computational Frameworks

3
General Questions
  • What makes E. relevant to Computation?
  • What makes E. relevant to the study of speech?
  • How can a subjective process be understood in
    computational terms?
  • How do we operationalize our model?
  • Caveat emotions vs. linguistic labels

4
Describing Emotions
  • Taxonomic descriptions (Izzard)
  • Discreet descriptions
  • Basic emotions (Frijda, Plutchick)
  • Dimensional (continuous) descriptions (Arnold,
    Schlosberg)
  • Raw empirical observations, anecdotal reports
  • Evidence
  • Langugage, self reports, behavioral, physiological

not an exhaustive list
5
Theoretical Frameworks (Cornelius)
  • Evolutionary (Darwin)
  • Behavioral physiological ? Expression
  • Jamesian
  • Physiological behavioral ? Experience
  • Cognitive (Arnold)
  • Thought and emotion inseparable ? Appraisal
  • Social Constructivist (Averill)
  • E. fully understood only on social level of
    analysis

6
Appraisal Theory (Arnold)
  • Describes mechanism that elicits the appropriate
    emotion in circumstances in which the functions
    of that emotion are called for. (Smith)
  • Meaning based and evaluative
  • Individuals react differently
  • Continuous process (not necessarily conscious)
  • Produces action tendency / action readiness
  • Highly differentiated
  • Conducive to computational modeling

7
Beyond Appraisal Theory
  • Emotion as Information (Clore)
  • Conceptual Priming vs. Feelings as Information
  • Judgement (Damasio)
  • Intentionality, Agency and Emotion (Ableson)
  • Goal ? Action ? Causal Inst. ? Outcome
  • Alternative construals of events
  • So whats a good definition, anyway?

8
Some Definitions
  • A felt tendency toward anything intuitively
    appraised as good (beneficial), or away from
    anything intuitively appraised as bad (Arnold)
  • Valenced reactions to events, agents or objects,
    with their particular nature being determined by
    the way in which the eliciting situation is
    construed. (Clore/Ortnoy)
  • Reaction to significant stimulus events that
    impinge on organismic equilibruim or that change
    the organism-environment relationship. (Scherer)

9
A Few Computational Approaches
  • Must specify (Scherer)
  • Appraisal Criteria (Input vector)
  • Parameters (theoretical appraisal vectors)
  • Predicted Affective Response (vocal, action)
  • Computational Model (Implementation)
  • Situated Cognizers (Petta)
  • Modeling Emotional Agents (Wehrle)
  • Predicting Emotion (Enos)

10
Classifying Emotion Using Appraisal Criteria
  • ISEAR Database (Scherer)
  • Subjects surveyed about remembered emotional
    episodes (N7659)
  • JOY, FEAR, ANGER, SADNESS, DISGUST, SHAME,
    GUILT
  • Survey elicited variables for antecedents and
    reactions to the episode, as well as name of
    emotion
  • Maximum likelihood to determine optimal directed
    graphical model of dependencies.

11
Digraph ofVariableDependencies
12
Classification Accuracy
13
Implications for Speech
Appraisal Criteria
Emotion
Speech
Context
Action
Appraisal Criteria
Emotion
Speech
Understanding of Context
14
Implications for Speech
Appraisal Criteria
Emotion
Speech
Context
Action
Appraisal Criteria
Emotion
Speech
Understanding of Context
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