University of Illinois Urbana-Champaign

Clotho and Lachesis: Building, Optimizing and Validating Models to Predict Important Applications in a Real-World Context

Hailpern, Joshua; Karahalios, Karrie; Jitkoff, Nicholas

Content Files
2010-07-27 ERROR IN 7-19 USE ME.formatted.pdf

Permalink

https://hdl.handle.net/2142/17091

Description

Title
Clotho and Lachesis: Building, Optimizing and Validating Models to Predict Important Applications in a Real-World Context
Author(s)
  • Hailpern, Joshua
  • Karahalios, Karrie
  • Jitkoff, Nicholas
Issue Date
2010
Keyword(s)
  • Utility
  • Modeling
  • Activity
  • Importance
Date of Ingest
2010-09-16T06:16:06Z
Abstract
"When using the computer, each user has some notion that ""these applications are important"" at a given point in time. We term this subset of applications that a user values as high-utility applications. Identifying high-utility applications is a critical first step for Task Analysis, Time Management/Workflow Analysis, and Interruption research. However, existing techniques fail to identify at least 57% of these applications. Our work directly associates measurable computer interaction (CPU consumption, window area, etc.) with the user’s perceived application utility without identifying task. We present an objective utility function that accurately predicts the user’s subjective impressions of application importance, improving existing techniques by 53%. This model of computer usage is based upon 321 hours of real-world data from 22 users (both professional and academic). Unlike existing approaches, our model is not limited to a pre-existing set of applications or known tasks. We conclude with a discussion of the direct implications for improving accuracy in the fields of interruptions, task analysis, and time management systems."
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/17091

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