This document summarizes research on analyzing temporal micro-level behavioral patterns from multimodal data streams. Key points:
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- The goal is to discover more complex patterns from
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Slide deck for my PhD Confirmation of Candidature presentation, which I gave (and passed!) in April 2012. I have removed some illustrations of social media activity, which I had permission to use on the day, but this is the bulk of the presentation.
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Slide deck for my PhD Confirmation of Candidature presentation, which I gave (and passed!) in April 2012. I have removed some illustrations of social media activity, which I had permission to use on the day, but this is the bulk of the presentation.
Computational Reproducibility vs. Transparency: Is It FAIR Enough?Bertram Ludäscher
Keynote at CLIR Workshop (Webinar): Torward Open, Reproducible, and Reusable Research. February 10, 2021. https://reusableresearch.com/
ABSTRACT. The “reproducibility crisis” has resulted in much interest in methods and tools to improve computational reproducibility. FAIR data principles (data should be findable, accessible, interoperable, and reusable) are also being adapted and evolved to apply to other artifacts, notably computational analyses (scientific workflows, Jupyter notebooks, etc.). The current focus on computational reproducibility of scripts and other computational workflows sometimes overshadows a somewhat neglected and arguably more important issue: transparency of data analysis, including data wrangling and cleaning. In this talk I will ask the question: What information is gained by conducting a reproducibility experiment? This leads to a simple model (PRIMAD) that aims to answer this question by sorting out different scenarios. Finally, I will present some features of Whole-Tale, a computational platform for reproducible and transparent computational experiments.
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2. Temporal Bands of Human Computation
(Ballard, Hayhoe, Pook, & Rao, 1997)
(B ll d H h P k & R 1997)
macro-level
ternal
behavior
micro-level
micro level
ext
behavior
nal
intern
3. Dual Eye Tracking in Child-Parent Interaction
(
(with Linda Smith, Damian Fricker, & Linger Xu)
, , g )
child’s first person view parent’s first person view
from
eye
camera
from head
camera
from head camera
child eye
tracker
adult eye tracker
5. Multimodal data
• Vision: 720*480, 30 frames/second, 3 cameras, 18,000
frames per dyads.
• Motion tracking: 250 Hz/second, 6 sensors with six
dimensions (x,y,z,h,p,r) on each.
900,000
900 000 data points per dyads
dyads.
• Speech: 44.1Hz
• Eye tracking: 30Hz
• 12GB per participant
6. Dealing with data
• Synchronization of multiple data streams
• Data annotation (automatically or manually)
• Data management
• Data Mining and Knowledge Discovery
8. Data Mining
• Our goal of analyzing gaze data is to find new patterns
and gain new knowledge from such data.
• With micro level data, even if we have some predictions
micro-level data
from our experimental designs, we nonetheless lack
precise predictions about the structure and patterns of
data at the micro-level.
• But how can we discover new and meaningful patterns if
we d not know what we are looking for?
do k h l k f
• Discovering new knowledge requires the ability to detect
unknown, surprising, novel, and unexpected patterns.
• A particular challenge is not just from the amount of data but
p g j
from how to extract, select and interpret meaningful patterns
from a sea of complex data.
10. Interactive Data Analysis
top‐down
knowledge
data
data pattern
pattern
visualization extraction
• This solution relies on both computational techniques and human domain
knowledge. Data visualization and pattern extraction techniques provide
candidate patterns through a bottom up way.
bottom-up way
• Compared with “blind” data mining, what we suggest is that researchers with
top down
top-down theoretical knowledge need to be in the loop of data mining and
data analysis.
12. face three objects
red blue red green red blue
child
hild
gaze
parent
gaze
face gaze and mutual gaze joint attention
13. Joint Attention State
Joint Attention State
60%
50%
40%
30%
20%
10%
0%
mutual gaze
t l child‐face/parent‐object parent‐face/child‐object
hild f / t bj t t f / hild bj t same object
bj t different objects
diff t bj t
‐10%
14. child following
child following
face three objects
child
gaze
parent
gaze
parent following
child
g
gaze
parent
gaze
15. What is joint attention made of?
when baby looks mom’s face, mom
when MOM looks baby’s face, baby looks at baby’s face 54% of the time;
when baby looks at an object mom
looks at mom’s face 13% of the
looks at 32% of time
time; when mom looks at an object
baby looks at 14% of time
baby lookshild of time
at 14%
child parent
t
54%(face)
32%(object)
13%(face)
14%(object)
gaze gaze
55% 56%
hand hand
17%
21%
probabilities of following an attended object/face
16. Sequential Patterns From
Multimodal Data Stream
active face-to-
joint attention following face
learner’s
gaze 1 1 1
teacher’s
gaze 2 3 2 3 2 3
teacher’s
hand
action 4 4 4
face three objects
23. Interactive Data Mining
top‐down
knowledge
data pattern
visualization extraction
• Human-in-the-Loop data analysis involves active and iterative
examination and exploration of visually displayed patterns to
select useful information and guide further knowledge discovery
discovery.
• “Discovery takes place between the ears” – Ben Shneiderman
25. Acknowledgement
Data collection and pre-processing : Damian Fricker, Amanda
p p g ,
Favata, Char Wozniak, Melissa Elston.
Data Processing: Tian Xu, Damian Fricker, Thomas Smith Henry
Xu Fricker Smith,
Shen.
This research was s ppo ted b NSF BCS 0924248 and NIH T32
esea ch as supported by
HD 07475
Thanks!