clarke@utcsri.UUCP (Jim Clarke) (05/10/85)
ACTIVITIES FOR THE WEEK COMMENCING MAY 20, 1985
(SF = Sandford Fleming Building, 10 King's College Road)
ARTIFICIAL INTELLIGENCE SEMINAR - Thursday, May 23, 11:00 am, SF 1105
Evangelos Milios
Massachusetts Institute of Technology
A Framework for Interpretation-guided Signal Processing
A framework is being developed for integration of contextual infor-
mation and signal processing. The particular application is the pro-
cessing and interpretation of acoustic signals from sensor arrays. Pro-
tocol analysis was used in order to identify the processing strategies
used by humans and the signal characteristics that are relevant to
interpretation. Aspects of the system that will be discussed are: the
concept of a "spectral primal sketch" for symbolically characterizing
information about the harmonic structure of a spectrum and the overall
architecture of the system, which resembles a multilevel GPS (general
problem solver). Current research includes semantic tree representa-
tions of signals, feature-based signal correlation by tree matching and
hybrid (both procedural and declarative) programming style for
knowledge-based signal processing.