Practical AI
Practical AI

Digital humans & detecting emotions

Could we create a digital human that processes data in a variety of modalities and detects emotions? Well, that’s exactly what NTT DATA Services is trying to do, and, in this episode, Theresa Kushner joins us to talk about their motivations, use cases, current systems, progress, and related ethical

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Teresa Kushner Guest

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Episode Summary

Executive Summary: Practical AI host Daniel Weitnack speaks with NTT Data’s Teresa Kushner about emotion AI: inferring feelings from voice, facial expression, body language, and other signals to improve interactions such as customer service, digital humans, and reading instruction. Kushner stresses that systems remain limited, must be designed around clearly defined tasks and suitable data, and require strong safeguards for consent, privacy, cultural differences, and ethical use.

Main Topics: Emotion AI and multimodal signals: Emotion AI extends beyond text sentiment analysis to infer emotional responses using voice quality and tone, facial expressions, body language, and other data. The useful modality depends on the situation and the problem being addressed. Task definition, data quality, and implementation: Successful applications require a clearly specified goal, relevant data and annotations, and systems able to access and process information reliably. Data quality, latency, computing capacity, and integration with existing infrastructure are practical constraints. Ethics, consent, privacy, and cultural context: Emotional cues can be misread across individuals and cultures, and collecting or storing sensitive signals raises privacy concerns. Kushner emphasizes understandable permission, transparency about data use, and avoiding harmful or intrusive applications. Digital humans and customer experience: Avatars can guide people through tasks in settings such as airport kiosks, company lobbies, car showrooms, and vehicles. A longer-term vision is to carry context across encounters, while preserving useful personalization and avoiding repeated explanations. Reading instruction and assistive interactions: A cartoon avatar developed through work involving NTT’s Denmark unit and MIT Media Lab can listen to a child reading, detect stumbling or disengagement, and respond with prompts. Kushner presents this as a promising way to make interactions adaptive and supportive. Testing, deployment, and responsible innovation: Applications need user and child testing, suitable physical interfaces, and deployment environments capable of handling real-time data. Kushner’s broader aim is to apply AI ethically to problems that help people, including challenges related to climate and security.

Key Arguments: Emotion is complex, so no single signal or model will reliably identify it in every setting; the appropriate modality depends on the use case, such as voice in a contact center or visual signals at a kiosk. AI projects should begin with a specific problem and desired outcome. Without that focus, teams risk collecting unnecessary information or building a system that does not solve the intended problem. The practical success of emotion AI depends on data quality and infrastructure as much as on the model: systems may need timely access to transaction records, data from multiple sources, and adequate compute and low-latency processing. Emotion detection can create unfair or culturally inappropriate judgments—for example, interpreting a lack of eye contact as dishonesty or misreading interview nervousness—so signals should not be treated as universal truths. People should understand and authorize how emotional and personal data are used. Processing a general aggregate response is materially different from profiling and responding to a specific individual. Emotion-responsive interfaces are most valuable when they improve the user’s experience, as in a reading tutor that notices when a child struggles or loses attention; applications should be tested for their effects and unintended consequences.

Data Points: Teresa Kushner’s work with MIT: About 30 years, on and off - Kushner describes her experience working with MIT and identifies the Media Lab as a collaborator in the avatar and reading-application work. Sentiment-analysis history: The last decade - Kushner recalls using online language monitoring while at Cisco during the previous decade to understand public response and press relations. Customer journey example: Six months - In a hypothetical future scenario, an avatar might recognize a customer at a showroom from a conversation at Narita Airport six months earlier; this is an illustrative vision, not a reported deployment result. Quantified performance results: None stated - The speakers provide no specific accuracy rates, sample sizes, adoption figures, or measured outcome statistics for the emotion-AI applications discussed.

Pivotal Quotes: "If you don't have that clearly in your mind, then we will go off on the wild fancies every which way, and we won't solve the problem that we're trying to solve." — Teresa Kushner: She argues that defining the intended use is essential before building an AI application. "all technology has got to have permission from the people that are using it in order to keep information." — Teresa Kushner: She frames consent and user control as core requirements for collecting and retaining emotional or personal data. "My dream, when I lay in bed at night and think about what we could do, is to make sure that artificial intelligence gets applied ethically to solve problems that help people." — Teresa Kushner: She summarizes her guiding ambition for AI development and deployment.

Implications: Emotion AI may make services and learning tools more responsive, but emotional inferences are uncertain and sensitive. Organizations should define narrow, useful goals, validate systems with affected users, minimize and protect data, explain consent clearly, and account for cultural variation before deployment.

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