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MAS630: Affective Computing PLEASE FILL OUT INDEX CARD & HAND IN BEFORE YOU LEAVE TODAY: NAME Probability taking class for credit Email Program of study & Year in it Research (thesis) advisor Why are you interested in affective computing? What topics do you most want to see us cover this semester? 1

Transcript of MAS630: Affective Computing - MIT OpenCourseWare · MAS630: Affective Computing . PLEASE FILL OUT...

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MAS630: Affective Computing

PLEASE FILL OUT INDEX CARD & HAND IN BEFORE YOU LEAVE TODAY:

NAME Probability taking class for credit

Email

Program of study & Year in it

Research (thesis) advisor

Why are you interested in affective computing? What topics do you most want to see us cover this semester?

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MAS630: Affective Computing http://courses.media.mit.edu/2015fall/mas630

Rosalind Picard, Sc.D., Professor

Introductions: Who is here…? 2

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Course Logistics

http://courses.media.mit.edu/2015fall/mas630

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Course Logistics

http://courses.media.mit.edu/2015fall/mas630

First ideas about projects due in two weeks!

MIT COUHES – Sept 24 & Oct 27 deadlines

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Week 1: Overview

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Terminology: Affect, emotions, moods, feelings, expressions, displays…

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Basic Emotion: Categories? Dimensions?

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Emotion is like weather. We ALWAYS have emotion. Continuous: Wind velocity, humidity, temperature,

barometric pressure, precipitation 81 °F / 27 °C Partly Cloudy Humidity: 79% Dew Point: 73 °F / 23 °C Wind: 6 mph /

9 km/h from the South Pressure: 29.80 in / 1009 hPa Heat Index: 85 °F / 30 °C Visibility: 6.2 miles / 10.0 kilometers UV: 0 out of 16 Clouds: Few 1300 ft / 396 m

6 mph / 9 km/h , Wind Dir: 190° (South) Ceiling: Unlimited

Discrete: Storm, tornado, blizzard, hurricane, typhoon

What is emotion? Is it discrete (anger, joy,…) or continuous (aroused-calm, positive-negative, …), or…? (~100 definitions: Kleinginna & Kleinginna 1981)

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Flowers

Mutilated face

Win World Series

Cemetery

Cute baby

Arousal

Valence

Skin conductance is a good indicator of arousal,

which is a good indicator of memory and attention 9

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Which emotion is this person feeling?

Happiness

Anger

Surprise

Fear

Sadness

Disgust Image courtesy of Eduardo Siquier Cortéson flickr. License CC BY-NC-SA.

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Which emotion is this person feeling?

Pride

Anger

Surprise

Fear

Sadness

Disgust

(works for any positive term – happy, joy, pride, elated, serenity, etc.)

Image courtesy of Eduardo Siquier Cortéson flickr. License CC BY-NC-SA.

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Emotional touch can be measured

1977, Manfred Clynes (Also coined “cyborg” in Clynes & Klein, 1960)

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Essentic Forms (Clynes)

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What is affective computing?

Computing that relates to arises from or

deliberately influences emotion or other affective phenomena.

Giving technology skills of “emotional

intelligence” for interacting with us

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Motivation for AC…

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This character barges into your office when you’re busy. He doesn’t apologize, and doesn’t notice you are annoyed.

He offers you useless advice. You express more annoyance. He ignores it.

He continues to be unhelpful. The clarity of your emotional

expression escalates.

He ignores it.

(this goes on)

Finally you tell him explicitly “Go Away”

He winks, and does a happy little dance before exiting.

Image courtesy of Alex Muller on flickr. License CC BY-NC-SA.

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…doesn’t notice you are annoyed.

[Doesn’t recognize your emotion]

You express more annoyance. He ignores it.

[Doesn’t respond appropriately to emotion]

He winks, and does a happy little dance before exiting.

[Stupid about expressing emotion.]

Image courtesy of Alex Muller on flickr. License CC BY-NC-SA.

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• Expressing emotions • Recognizing emotions • Handling another’s emotions • Regulating emotions \ • Utilizing emotions / (Salovey and Mayer 90, Goleman 95)

Skills of Emotional Intelligence:

if “have emotion”

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You may already be an expert at this. Here is why.

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Human - computer interaction is natural and social (Reeves and Nass 1996)

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Human- human interaction

Suppose that a person starts to give you help at a bad time.

You try ignoring, then frowning at, then maybe glaring at him or her...

The smart person infers you don’t like this, ceases the interruption, notes the context, and learns from the feedback.

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Human- human interaction

Suppose that a person starts to give you help at a bad time.

You try ignoring, then frowning at, then maybe glaring at him or her...

The smart person infers you don’t like this, ceases the interruption, notes the context, and learns from the feedback.

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Human-Computer interaction

Suppose that a computer starts to give you help at a bad time.

You try ignoring, then frowning at, then maybe glaring at it...

The smart computer infers you don’t like this, ceases the interruption, notes the context, and learns from the feedback.

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“But the computer wouldn’t frustrate people if it was only more intelligent?”

Consider:

“But the person wouldn’t frustrate people if he/she was only more intelligent?”

Fact: The most intelligent people are still frustrating (at least sometimes). People and computers can’t always prevent frustration. Thus, they should be prepared to handle it intelligently.

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1. Notice when the person you’re interacting with is frustrated (or showing another emotional state).

2. Determine how best to respond.

3. Respond/make it so.

4. Assess how that worked.

5. Learn. Adjust if needed for next time.

Emotional intelligence includes:

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Intelligent expression by computers requires first recognizing affective context (and also considering goals & predicting outcome)

“Like one who takes away a garment on a cold day, or like vinegar poured on soda, is one who sings songs to a heavy heart” Proverbs 25:20

Image courtesy of Alex Mulleron flickr. License CC BY-NC-SA.

Image courtesy of charamelody on flickr. License CC BY-NC.

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Week 2: From your homeworks…

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How should a car voice sound, given a driver is either Happy or Upset?

Driver Affect: Car Voice:

Happy

Enthused

Happy

Subdued

Upset

Enthused

Upset

Subdued

Number of accidents

Minutes driver spoke

Jonsson, I.-M. and Nass, C. (2004) Effects of driver emotion and car voice emotion on actual and perceived driving performance. Stanford CA: Stanford Univ.

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Finding: Choosing response appropriate to driver affective state improves driver safety and performance.

Driver Affect: Car Voice:

Happy

Enthused

Happy

Subdued

Upset

Enthused

Upset

Subdued

Number of accidents

2 8.3 9.6 6.3

Minutes driver spoke

5.8 4.2 3.9 4.7

Jonsson, I.-M. and Nass, C. (2004) Effects of driver emotion and car voice emotion on actual and perceived driving performance. Stanford CA: Stanford Univ.

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How do we measure emotion?

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Emotions give rise to changes that can be sensed:

Distance Face, voice Sensing: Posture Gestures, movement, behavior Temperature Respiration Up-close Pupil dilation Sensing: Skin conductance ECG, EEG, Blood pressure Internal Hormones Sensing: Neurotransmitters …

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What are the natural affordances of the environment?

Image courtesy of Judy Baxter on flickr.License CC BY-NC-SA.

Image courtesy of Daniel Hoherd on flickr.License CC BY-NC.

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Mouse pressure may increase with frustration, distress

frustration linked to factors that cause wrist problems (Dennerlein, et al., International Ergonomics Association ’03)

Pressure Sensitive Mouse

(Reynolds)

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Can we teach a chair to recognize behaviors indicative of interest and boredom? (Mota & Picard)

Sit upright Lean Forward Slump Back Side Lean

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Sensor chair is a significant nonverbal channel for discriminating learner interest…

Results (on children not in training data, Mota and Picard, 2003): 69-83% accuracy recognizing if child is in state of: High Interest, Low interest, Taking a Break

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Emotion recognition & response

“Kismet” robot

Image is in the public domain.

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Emotional arousal and physiology

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Subject intentionally expressing 8 emotions: 1. Neutral 5. Platonic Love 2. Anger 6. Romantic Love 3. Hate 7. Joy 4. Grief 8. Reverence

Each emotion collected daily, for > 4 weeks 4 physiological signals: EMG on jaw, skin conductance, BVP,

respiration

Classification Accuracy: 81% on 8 emotions (person dependent) Picard et al., IEEE Trans. Pattern Analysis Machine Intell.,Oct 2001.

1. Neutral 5. Platonic Love 2. Anger 6. Romantic Love 3. Hate 7. Joy 4. Grief 8. Reverence

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Simultaneously examine physiology and behavior for recognizing level of stress: up to 96% accurate, across 12 drivers. (Healey and Picard, ICPR 2000)

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皮膚の伝導性に関する再考

Rethinking skin conductance sensing (Selene Mota, Hoda Eydgahi, Rich Fletcher)

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Audience’s “glow” (aggregate skin conductivity) conveys excitement

www.media.mit.edu/galvactivator 42

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Skin conductance often increases with these:

• Significant thoughts • Exciting events • Exercise/breathing deeply • Motion artifacts • Humidity/moisture increase • Lying • Pain

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StartleCam: A Cybernetic Wearable Camera (Healey & Picard, ISWC 98)

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StartleCam Filter

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StartleCam Filter Algorithm

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Wearable Affective DJ chooses music from your play-list that helps you attain the level of “activation” you specify or otherwise regulate your feelings/mood (Healey, Dabek, Picard, 1998)

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Week 3: From your homeworks…

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EDA, GSR etc.

Electrodermal activity (EDA): general phenomenon Ways to measure: conductance, potential, resistance, etc. Old terminology (not specific – could refer to any of the above): GSR

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Errors

• GSR is traditionally measured on the “non-dominant hand” (Chap 14 says dominant) Note: We now think it’s important to measure both sides in many cases, and the dominant side for more threat/anxiety/grief/sadness

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Errors

• HR increases do not imply an increase in Sympathetic Nervous System (SNS) activation. HR increases may also be caused by withdrawal of the vagus nerve, part of the Parasympathetic Nervous System (PNS)

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Errors

These are not the same: • Conductance is (microSiemens). • Conductivity is conductance per unit of

length (microSiemens/cm).

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References

Mayer, John D., Peter Salovey, et al. “Emotional Intelligence: Theory, Findings, and Implications”.Psychological Inquiry 15, no. 3 (2004): 197-215. Reeves, Byron, and Clifford Nass. The Media Equation: How People Treat Computers, Television, and New Media Like Real People and Places. Center for the Study of Language and Inf, 2003. Jonsson, Ing-Marie. "Matching In-Car Voice with Driver State: Impact on Attitude and Driving Performance." Proceedings of the 3rd International Driving Symposium on Human Factors in Driver Assessment, Training, and Vehicle Design : Driving Assessment 2005 : Samoset Resort on the Ocean, Rockport, Maine, Usa, June 27-30, (2005): 173-80. Chen, JC, JT Dennerlein, et al. "Knee Pain and Driving Duration: A Secondary Analysis of the Taxi Drivers' Health Study." American Journal of Public Health 94, no. 4 (2004): 575-81. Mota, S, and R.W Picard. "Automated Posture Analysis for Detecting Learner's Interest Level." Ieee Computer Society Conference on Computer Vision and Pattern Recognition Workshops 5 (2003). 53

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References cont.

Picard, R.W., Elias Vyzas, et al. "Toward Machine Emotional Intelligence: Analysis of AffectivePhysiological State." IEEE Transactions Pattern Analysis and Machine Intelligence 23,no. 10 (2001): 1175-91. Healey, Jennifer and Rosalind W. Picard. "Smartcar: Detecting Driver Stress." Proceedings. 4 (2000): 218-221. __ __ __. "Startlecam: A Cybernetic Wearable Camera." Wearable Computers (1998): 42-49.

Healey, Jennifer, Rosalind W. Picard, and Frank Dabek. "A New Affect-Perceiving Interface and Its Application to Personalized Music Selection." Proceedings of the 1998 Workshop on Perceptual User Interfaces (1998): 4-6.

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