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ERIC Number: EJ899370
Record Type: Journal
Publication Date: 2007
Pages: 16
Abstractor: As Provided
Reference Count: 57
ISSN: ISSN-1938-727X
Enhancing Access to Situational Vocabulary by Leveraging Geographic Context
Patel, Rupal; Radhakrishnan, Rajiv
Assistive Technology Outcomes and Benefits, v4 n1 p99-114 Fall 2007
Users of augmentative and alternative communication (AAC) aids could benefit from novel methods for accelerating access to contextually relevant vocabulary. This paper describes our initial efforts toward improving access to situational vocabulary through the use of geographic context to predict vocabulary. A corpus of spoken data produced by one able-bodied male speaker across various locations was collected and used to mine location-specific vocabulary clusters. We describe the data mining algorithm and illustrate how context-driven vocabulary organization and prediction can be integrated into an iconic communication system. Correlations between user and algorithm-generated vocabulary patterns highlight discrepancies between actual versus perceived frequency statistics. Thus, device customization may be achieved through a hybrid human-algorithmic approach to vocabulary selection. Endowing the communication aid with knowledge about the user's location-specific vocabulary patterns may help to balance the burden of communication between the system and the user to yield substantial gains in accessing situationally appropriate vocabulary which may in turn accelerate communication rate. (Contains 3 figures and 4 tables.)
Assistive Technology Industry Association and SEAT Center. Available from: SEAT Center, Special Education, Illinois State University, Campus Box 5910, Normal, IL 61790. Tel: 309-438-7811; Fax: 309-830-0999; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A