BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:On the Benefits of Confidence Visualization in Speech Recognition 
 - Keith Vertanen and Per Ola Kristensson (University of Cambridge)
DTSTART:20080317T111500Z
DTEND:20080317T113000Z
UID:TALK11159@talks.cam.ac.uk
CONTACT:Philip Sterne
DESCRIPTION:In a typical speech dictation interface\, the recognizer's bes
 t-guess is displayed as normal\, unannotated text. This ignores potentiall
 y useful information about the recognizer's confidence in its recognition 
 hypothesis. Using a confidence measure (which itself may sometimes be inac
 curate)\, we investigated providing visual feedback about low-confidence p
 ortions of the recognition using shaded\, red underlining. An evaluation s
 howed\, compared to a baseline without underlining\, underlining low-confi
 dence areas did not increase user's speed or accuracy in detecting errors.
  However\, we found that when recognition errors were correctly underlined
 \, they were discovered significantly more often than baseline. Conversely
 \, when errors failed to be underlined\, they were discovered less often. 
 Our results indicate confidence visualization can be effective - but only 
 if the confidence measure has high accuracy. Further\, since our results s
 how that users tend to trust confidence visualization\, designers should b
 e careful in its application if a high accuracy confidence measure is not 
 available.\n\nThe paper and videos can be found "here":http://www.keithv.c
 om/pub/confshade/\n\nEven more details can be found in chapter 2 of my "th
 esis":http://www.keithv.com/pub/phd/\n\nThis will be a 10-minute CHI pract
 ice talk.\n\n
LOCATION:TCM Seminar Room\, Cavendish Laboratory\, Department of Physics
END:VEVENT
END:VCALENDAR