Cognitive Technologies for Teams 711HPW/RHCPT › dtic › tr › fulltext › u2 › a592465.pdflab...
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DISTRIBUTION A. Approved for public release; distribution unlimited. WPAFB 07-0083
Cognitive Technologies for Teams
711HPW/RHCPT
September 2010
Benjamin A. Knott, Ph.D.
Human Effectiveness Directorate
711th Human Performance Wing
Air Force Research Laboratory
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1. REPORT DATE SEP 2010
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4. TITLE AND SUBTITLE Cognitive Technologies for Teams711HPW/RHCPT
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6. AUTHOR(S) 5d. PROJECT NUMBER
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7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Cognitive Technologies for Teams U.S. Air Force Research LaboratoryWPAFB, Dayton, USA
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13. SUPPLEMENTARY NOTES See also ADA560467. Indo-US Science and Technology Round Table Meeting (4th Annual) - Power Energyand Cognitive Science Held in Bangalore, India on September 21-23, 2010. U.S. Government or FederalPurpose Rights License
14. ABSTRACT The mission of the Cognitive Technology for Teams (CTT) research program is to conduct research anddevelopment that enhances the Air Forces capability to support teams that are effective, resilient, andadaptable within the context of command and control (C2). The program provides science and technologyleadership in two areas, a) the development and assessment of collaborative interfaces to extend theeffectiveness of battle managers working within a network-centric framework, and b) the development ofnew metrics for assessing team workload and performance. To this end the program conducts appliedresearch within two laboratories. The Collaborative Technology Testbed permits the systematic evaluationof advanced collaboration interface technologies, data visualization tools, and multi-modal interfacetechnologies and their effects on team performance, communication effectiveness, shared situationawareness, and decision effectiveness. Experiments in this lab typically employ high-fidelity simulatedwork environments for human-in-the-loop experimentation. The Augmented Team Workload AssessmentLab is designed to explore the application of physiologic-based operator state assessment technology to theobjective, online measurement of team states such as mental workload, stress, and fatigue. Research in thislab is focused on the development and validation of theory-driven, innovative subjective and behavioralmetrics for characterizing individual and team workload; and development of robust physiological indicesof team workload, with a particular interest in minimally invasive measures such as EEG, EOG, ECG eyemovement data and cerebral hemodynamics. Current research directions for the CTT program will be discussed.
15. SUBJECT TERMS
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16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT
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18. NUMBEROF PAGES
19
19a. NAME OFRESPONSIBLE PERSON
a. REPORT unclassified
b. ABSTRACT unclassified
c. THIS PAGE unclassified
Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18
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Plans & Programs
(XP)
Directed Energy (RD)Kirtland AFB, NM
Space Vehicles (RV)Kirtland AFB, NMHanscom AFB, MA
Information (RI)Rome, NY
Wright-Patterson AFB, OH
Sensors (RY)Wright-Patterson AFB, OH
Hanscom AFB, MARome, NY
Propulsion (RZ)
Wright-Patterson AFB, OHEdwards AFB, CA
Air Vehicles (RB)
Wright-Patterson AFB, OH
Munitions (RW)
Eglin AFB, FL
711 Human Performance Wing
Wright-Patterson AFB, OH
Brooks AFB, TXMesa, AZ
Materials & Manufacturing
(RX)Wright-Patterson AFB, OH
Tyndall AFB, FL
Air Force Office of Scientific
Research (AFOSR)
Washington DC
Comptroller
(FM)Personnel
(DP)Legal
(JA)Small
Business
(SB)
Air Force Research Laboratory
Organization Structure
Maui, HI
Contracting
(PK)Comp Science &
Engineering (RC)Safety
(SE)
HQ AFRL
Human Effectiveness
(RH)Wright-Patterson AFB, OH
Brooks AFB, TXMesa, AZ
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Battlespace Acoustics Branch (RHCB)Leading the discovery, evaluation, and transition of revolutionary auditory and communication technologies that optimize warfighter survivability and lethality across the full range of battlespace environments
Supervisory Control Interfaces Branch (RHCI)Conducting research to enhance the effectiveness of the integration of crew and/or operators with intelligent and autonomous systems to fully exploit the joint capabilities of the human-machine system.
Collaborative Interfaces Branch (RHCP)Leading the discovery of innovative technologies that optimize human-to-human and human-to-machine collaboration in a network-centric, distributed environment for both teams and individuals across all USAF domains
Battlespace Visualization Branch (RHCV)Advancing the science and technology associated with the collection, optimization, display, and assimilation of visually complex informationto enable accurate and effective decision making across the battlespace domains
Warfighter Interface Division
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Collaborative Interfaces for C2
Program Goals• Collaborative Tools for Tactical C2
(FY 05-09)
– Design Tools – with multi-modal collaborative interface technologies
– To Enhance: Performance Efficiency,
Decision-Making, Situation Awareness,
Workload
• Augmented Team Workload Assessment (FY08-12)
– Develop Metrics to Assess: Team Cognitive Workload and Situation Awareness
– To Enhance: Distribution of Workload, Situation Awareness, Efficiency & Effectiveness of Decision-Making, Speed of Command
• Other Studies/Research Areas
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DRAW Use Case 1: Dynamic Replanning
POP UP CAUSES CHANGE IN
CAP POSITION AIR DEFENCE
MOVES TO ACCOMMODATE
REPLANNED EGRESS
AD BENO
Can operators quickly communicate information changes (e.g. new EoB info that changes plan), and insure safety and success?
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Experiment Players
•C2:
– Tactical – E-3
– Operational – CAOC (White Force)
•TST Strike Package:
– Strikers – GR-4s
– SEAD – F-16CJs
TST Coord
Ftr C2
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Experimental Factors
• Joint Warrior-based scenario– TST and intel injects via WF
• US & UK operator participation – 1-5 Mar, Farnborough, UK
• Experimental focus:– Interflight coordination for support
– ROE & SEAD asset dependencies– Quickly communicating changes
– DRAW tool (US)– Dynamic mission replanning
– Mission management tools (UK)– Resulting TTPs
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Chat Communication Study
Benefits to the Warfighter
Projected Research Schedule As of: 11 Dec 09Month Nov Jan Mar May July
Dec Feb Apr Jun Data Interview with E-3 SME’s
Synthetic Task Environment Scenario Design, Development & Testing
Live-fly Observation
Distribute Survey
Collect experimental data
Data Analysis & Write-up & Final Report
ApproachThree major components:
1.Operational Chat Survey
2.Live-fly Observation (if permissible)
3.Empirical (Lab) Study
Greater insight into the impact of chat communication
can help:
• Enhance implementation to maximize strengths
and minimize weaknesses
• Focus future training
• Make smart decisions on best practice of deploying
technology
Chat communication study to assess the impact chat
communication may have on communication processes,
shared understanding, and sensemaking behaviors; all of
which impact communication and coordination effectiveness.
Description
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Chat Communication Study
Three Components of Study:
1.Operational Survey
- Objective: understand current practices, procedures, issues, usage, concerns, and operator requirements.
2.Field Observation (contingent on opportunity)
- Objective: understand chat usage and difficulties and domain challenges
3.Experimental Study
- Objective: empirically test the impact chat technology on how teams of operators use this tool to solve problems, coordinate, and communicate
Communication = a means to solve complex problems
Voice Keyboard
Transient Voice Only Chat Only (messages
disappear)
Permanent Voice + Archival
Chat Log
Chat + Archival Chat
Log
2x2 Experimental Design
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Team Resource And Cognitive
Effectiveness (TRACE) MonitorObjective: Develop near-real-time behaviorally- and
neurophysiologically-based measures of team fitness
(operator functional states).
Approach
• Leverage advanced mathematical techniques to recognize
patterns in team behavioral and physiologic data
associated with effective or impaired team performance
– Statistical modeling of team communication and behavior using
Hidden Markov Models (HMMs)
– Applying nonlinear data analytic techniques (recurrence quantification
analysis, cross-recurrence quantification, fractal analysis, etc.) to
identify chaotic, emergent patterns in team communication and
physiologic data
• Apply online, neurophysiological measures to diagnose
likely drivers of team performance impairments (extreme
workload, inequitably distributed workload, stress, fatigue,
etc.)
– Potentially useful measures have been derived from EEG, ECG, eye-
gaze tracking, and cerebral hemodynamics and oximetry
Fractal analysis of human inter-beat interval data
Cross-recurrence analysis of eye-gaze data
HMM of operator UAV control (from Boussemart, Las Fargeas, Cummings, & Roy, 2009)
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Relevance
• Future network-centric CONOPs require rapidly formed, distributed teams for missions such as
time-sensitive-targeting (e.g., Alberts & Hayes, 2003).
• Distributed teams may not have the opportunity to develop shared mental models that support
good team performance & SA (Salas et al., 1995)
• TRACE will allow remote mission commanders and adaptive aiding tools to perceive and
anticipate team “mental” fitness, allowing them to better direct team resources and improve
performance & SA
Payoffs
• Monitoring and diagnostic tools for dynamic assessment, management, and mitigation of
teams, improving performance and SA
• Provides critical metrics for understanding human-unmanned systems
– Such systems operate differently than human teams in many respects (e.g., issues of trust,
complacency, communication, etc.)
– TRACE provides additional/novel approaches to understand teams, team processes
• A diverse suite of validated team process metrics, allowing more accurate appraisal of team
effectiveness
– Allows us to treat teams as emergent systems, not simply collections of individuals
TRACE Monitor
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Cerebral Hemodynamics
• Transcranial Doppler Sonography
(TCD)
– Utilizes ultrasound signals to monitor
intracranial arteries
– When a particular area of the brain
becomes metabolically active, by-
products of this activity will increase
• This results in increased blood flow to the
region to remove the unwanted by-products
• Near-Infrared Spectroscopy (NIRS)
– Utilizes tissue absorption of near-
infrared wavelengths to measure
cortical oxygen saturation levels or
regional saturation of oxygen (rSO2)
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Voice Stress Analysis
Measures:
• Low Power
• Word Search
• Word Count
• Word Trimming
• Pitch Tracking
• Gender
Determination
• Fundamental
Frequency
• Jitter/Shimmer
Wave File
Low Power Algorithm
MrateAlgorithm
Pitch Tracking
Jitter/Shimmer Algorithms
Infrasonic Stress Measures
Speaking Rate Measures
f0 Measures
Jitter/Shimmer Measures
Voiced Segments
A sample of the data used for analysis. Raw data (left) is filtered and windowed (center) prior to power spectrum (right).
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Non-Linear and Fractal Analysis
• Time series data
– EEG Data
– EKG
– Eye Tracking
– Communication data
• Recurrence quantification
analysis
– Behavior of systems over
time
– Visual representations of
patterns
• Power Spectral Density
Analysis
– Fast Fourier Transform
– Determine if the system is
fractal in nature
– Combined with control
theory to determine the
nature of the system
producing the time series
Goal: Determine the utility of dynamical systems
analysis for understanding team processes
Cross-recurrence analysis of eye-gaze data
y = 3E-09x-2.229
1.00E-04
1.00E-03
1.00E-02
1.00E-01
1.00E+00
1.00E+01
1.00E+02
1.00E-06 1.00E-05 1.00E-04 1.00E-03 1.00E-02 1.00E-01 1.00E+00
Power Spectral Density
-3 to -4 Hz -4 to -5 Hz
Fractal analysis of human inter-beat interval data
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Sensitivity & Diagnosticity in
Predicting Team Performance
• HMM development extracts patterns of behavior
from large corpora of training data
– Future prediction is based on statistical
likelihoods of a chain of behavior derived from
patterns learned in training
– Provide a novel means to monitor and predict
individual and team performance
– Uncertain if predictive accuracy is improved
using separate HMMs for each team member,
or using a single “team” HMM
– HMM prediction under different levels of task
demand
• EEG-based measures of workload are particularly
promising (Gevins & Smith, 2003)
– Central assumption is that changes in brain
activity reflect ongoing mental work (Tsang &
Vidulich, 2006)
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RHCPT Team
Research Scientists
– Gregory Funke, Ph.D.
– Benjamin Knott, Ph.D.
– Lt Connie Ambrose
– Becky Brown
– April Courtice*
– Matthew Funke*
– Maj Chris McClernon,
Ph.D.
– April Rose Panganiban*
– Sheldon Russell*
*students
Software Engineers
– Allen Dukes
– Brent Miller
– Jim Hyson
– Matt Middendorf
Program Managers
– Sam Kuper
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• AFRL
– RHCPA – RHXS
– RHCB – RHCI
– RHA – RISA
• International Partners
– DSTL & QinetiQ, UK
– DSTO, AUS
• Academic Partners
– Massachusetts Institute of Technology (MIT), Humans and Automation
Laboratory (HAL)
– University of Cincinnati
– Wright State University
– West Point
– University of Central Florida
• Industry
– Boeing
RHCPT Collaborators
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Collaborative Tools for C2
Questions?
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RHCPT Spaces and Projects
• CTT Lab
– SDO Program – Sam Kuper
– Dynamic Cyber Security – Janet Peasant
– MATRIX Experiment
• DRAW & UK PA – Allen Dukes
• WCAS & MMC – Brent Miller
• SPO Chat Study – April Courtice
• Nonlinear Analysis – Sheldon Russell
• Workload Lab
– Voice Stress Analysis
• Algorithms and Metrics – Chris McClernon, Matt Middendorf
• Nonverbal Voice Stress Analysis –Mike Harter
– BioRadios & EEG – Becky Brown, April Rose Panganiban
• DART Lab
– Change Blindness Research – April Rose Panganiban, Becky Brown
• BMC2 Lab
– Transcranial Doppler Sonography Research
• TCD and Vigilance Research –Matt Funke
• Removal of Voice-Related Artifacts from TCD Recording – Connie Ambrose
– Overview of TRACE Research
• FaceLab Demo – Allen Dukes
• TRACE Workload Scale and Exchange Interfaces – Jim Hyson