NDLI: Two-Part Models Capture the Impact of Gain on Pointing Performance

Content Provider	ACM Digital Library
Author	Kitamura, Yoshifumi Tsukitani, Takayuki Booth, Kellogg S. Shoemaker, Garth
Copyright Year	2013
Abstract	We establish that two-part models of pointing performance (Welford’s model) describe pointing on a computer display significantly better than traditional one-part models (Fitts’s Law). We explore the space of pointing models and describe how independent contributions of movement amplitude and target width to pointing time can be captured in a parameter $\textit{k}.$ Through a reanalysis of data from related work we demonstrate that one-part formulations are fragile in describing pointing performance, and that this fragility is present for various devices and techniques. We show that this same data can be significantly better described using two-part models. Finally, we demonstrate through further analysis of previous work and new experimental data that $\textit{k}$ increases linearly with gain. Our primary contribution is the demonstration that Fitts’s Law is more limited in applicability than previously appreciated, and that more robust models, such as Welford’s formulation, should be adopted in many cases of practical interest.
Starting Page	1
Ending Page	34
Page Count	34
File Format	PDF
ISSN	10730516
e-ISSN	15577325
DOI	10.1145/2395131.2395135
Volume Number	19
Issue Number	4
Journal	ACM Transactions on Computer-Human Interaction (TOCHI)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2012-12-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fitts Welford Gain Interaction techniques Large displays Pointing
Content Type	Text
Resource Type	Article
Subject	Human-Computer Interaction

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A probabilistic approach to modeling two-dimensional pointing

Effects of motor scale, visual scale, and quantization on small target acquisition difficulty

Mid-Air Pointing on Ultra-Walls

Differences in pointing task performance between preschool children and adults using mice

Visual search and mouse-pointing in labeled versus unlabeled two-dimensional visual hierarchies

Integrating Point and Touch for Interaction with Digital Tabletop Displays

Foundations for designing and evaluating user interfaces based on the crossing paradigm

Targeting the Fitts Law

Refining Fitts' law models for bivariate pointing

Two-Part Models Capture the Impact of Gain on Pointing Performance

Similar Documents

A probabilistic approach to modeling two-dimensional pointing

Effects of motor scale, visual scale, and quantization on small target acquisition difficulty

Mid-Air Pointing on Ultra-Walls

Differences in pointing task performance between preschool children and adults using mice

Visual search and mouse-pointing in labeled versus unlabeled two-dimensional visual hierarchies

Integrating Point and Touch for Interaction with Digital Tabletop Displays

Foundations for designing and evaluating user interfaces based on the crossing paradigm

Targeting the Fitts Law

Refining Fitts' law models for bivariate pointing

Two-Part Models Capture the Impact of Gain on Pointing Performance