Plenary
Lecture
On the Application of New Fuzzy Technologies in the
Methods of Expert Knowledge Engineering and Decision
Making for the Modelling and Prediction of Weakly
Structurable Processes
Professor Gia Sirbiladze
Department of Computer Science
Faculty of Exact & Natural Sciences
Iv. Javakhishvili Tbilisi State University, Georgia.
E-mail:
g.sirbiladze@tsu.ge
Abstract: In this speech we will perform the
analysis of Dempster-Shafer temporalized structure and
finite possibilistic Extremal Fuzzy Dynamic System
(EFDS) for the construction of more precise decisions
based on the expert (or decision making person - DMP)
knowledge stream. The process of decision precision
consists of two steps. On the first step the relation of
information precision is defined on a monotone sequence
of bodies of evidence; Negative inaccuracy is defined as
the stream of rational expert knowledge in
Dempster-Shafer temporalized structure; The principle of
negative inaccuracy is developed, as the maximum
principle of knowledge ignorance measure of a body of
evidence. Corresponding mathematical programming problem
is constructed. On the output of the 1-st step we
receive the expert knowledge precision stream of the
criteria with respect to any decision. On the 2-nd step
the constructed stream is an input trajectory for the
finite possibilistic model of EFDS. The fuzzy recurrent
process with possibilistic uncertainty, the source of
which is expert knowledge reflections on the states of
evolutionary complex system, is constructed. The
dynamics of possibilistic EFDS is described and the
constructed model is converted to the finite model. The
modeling process gives us the more precise decisions as
a prediction of a temporalization procedure, where
possible alternatives - decisions are ranked by their
possibility levels. The prediction is regularized in the
fuzzy time moments. A genetic algorithm approach is
developed for identifying of the transition operation of
the EFDS finite model.
For the illustration of the constructed approach two
examples will be considered: 1. The constructed
technology is applied in the Utility Theory
(non-probabilistic, dissonant body of evidence). An
example on the optimal choice of the master’s degree
students project’s versions is presented. 2.
Dempster-Shafer temporalized structure and finite
possibilistic EFDS are used for the construction of more
precise decisions in the well known A. Kaufmann’s theory
of expertons based on the experts’ intellectual
activities and their knowledge presentations. As an
example we use the temporalized theory of expertons in
the problem of risk valuations (dissonant body of
evidence).
Brief Biography of the Speaker:
Dr. Gia Sirbiladze is a full professor at the Department
of Computer Science of Faculty of Exact & Natural
Sciences of Iv. Javakhishvili Tbilisi State University,
Georgia. He received his Ph.D. degree in 1991 from the
Computational Mathematics Institute of the Georgian
Academy of Sciences. He received his D. Sci. degree from
the same institute in 2005. His scientific interests
include areas such as Intelligent Fuzzy Technologies and
General Systems, Fuzzy Technologies in Decision-making
Support Systems, Intelligent Simulation Modeling, Fuzzy
Extremal Dynamic Systems - Control, Filtration and
Identification, Fuzzy Discrete Optimization Problems and
Modeling Decisions. Dr. Gia Sirbiladze has published
over 65 scientific papers on the above-listed topics and
participated in many scientific conferences. He has
participated in many WSEAS conferences, including as a
Plenary Speaker. He is an author of one monograph on
Decision Making Problems in General Environment. Dr.Gia
Sirbiladze is a member of the National Union of
Mathematicians in Georgia. He serves as a reviewer for
Mathematical Reviews. He has reviewed papers for more
then 15 international and local journals and
conferences. He serves as Information Technology expert
for Georgian National Scientific Fund. Dr.Gia Sirbiladze
has participated in several national and international
research projects.
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