Clustering Digital Ink Strokes in Diagrams Drawn on a Tablet Computer

overratedbeltAI and Robotics

Nov 25, 2013 (4 years and 7 months ago)


Clustering Digital Ink Strokes in Diagrams Drawn on a Tablet

Edward Lank

Computer Science Department

San Francisco State University, 1600 Holloway, San Francisco, CA 94123

Study Aim

The purpose of this research is to study the effectiveness of a

grouping algorithm that
takes as input a diagram drawn using an electronic stylus on a tablet computer and
clusters the digital ink strokes. This study will provide a series of hand drawn diagrams
that our clustering algorithms will be applied to.

ct Population

All participants will be 18 years of age or older. Participants will be invited to join the
research study by classroom instructors. 15 graduate students from mathematics and
computer science will be asked to draw 5 diagrams each on a table
t computer. The
participants will be recruited by a flyer posted in the CS department office and in the
Mathematics conference room (see attached flyer).



Participants will first be asked to fill in a form containing some demographic data
ding their age and expertise in tablet computer usage. This will ensure that
all participants are over 18 years of age. The form follows the implied consent
procedures outlined, and subjects will be advised that their participation is strictly
and that they can stop at any time.


Participants will then be shown a 5 minute demonstration of the tasks they will be
asked to perform.


Participants then will have 15 minutes to draw 5 diagrams on a tablet computer.
The diagrams will be stored electronic
ally on the computer. Data will be kept
anonymously on the computer.


Participation in this study will take approximately 25 minutes.


The experiment will be administered in SCI 241 at 11:00 AM on a Friday in early
December 2003.

Risks, Benefits, Cost and

There are no risks, benefits, costs or compensation associated with the participation in
this research study.

Consent Process and Documentation

Participants will be advised of the implied consent procedures before the survey is

They will be encouraged to ask questions. Completion and return of the
survey will be taken as agreement to the conditions, consent to participate and consent to
the use of the data collected for research purposes.

Qualifications of the I

Edward Lank is a faculty member of the Computer Science department at San Francisco

State University who has done extensive research on
human computer interaction and

software applications.