HEPHESTUS: An expert system in PROLOG for the interpretation of the pyrolysis-mass spectra of polyesters, polyethers and polyureas using the certainty factor model

 
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1995 (EN)
HEPHESTUS: An expert system in PROLOG for the interpretation of the pyrolysis-mass spectra of polyesters, polyethers and polyureas using the certainty factor model (EN)

Kontoyannakos, J (EN)
Georgakopoulos, CG (EN)
Statheropoulos, M (EN)
Parissakis, G (EN)

N/A (EN)

The enhanced version of the expert system (ES) HEPHESTUS used for the interpretation of pyrolysis mass spectra of polymers is described and discussed. This version uses the certainty factor model for quantitative evaluation of the proposed solutions. The ES applies to the following categories of polymers: polyesters, polyethers and polyureas. The rules used by the ES were extracted from the study of the pyrolysis pathways of the above polymer categories. The rules correlate weighted mass spectra characteristics with polymer structures. The knowledge base of the ES was organised in a tree form, and the inference mechanism was based on a depth-first search. Examples of applications are presented. The abilities and the limitations of the ES are discussed. © 1995. (EN)

journalArticle

Pyrolysis (EN)
POLYMERS (EN)
NEGATIVE CHEMICAL IONIZATION (EN)
DIRECT DEGRADATION (EN)
Certainty factors (EN)
Expert system (EN)
TEREPHTHALIC ACID (EN)
STRUCTURAL INVESTIGATIONS (EN)
Interpretation (EN)
THERMAL FRAGMENTATION PROCESSES (EN)
IDENTIFICATION (EN)
AROMATIC ALIPHATIC POLYETHERS (EN)
Synthetic polymers (EN)
HYDROQUINONE (EN)
Pyrolysis-mass spectra (EN)
SPECTROMETRY (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Journal of Analytical and Applied Pyrolysis (EN)

1995


ELSEVIER SCIENCE BV (EN)



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