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uncertainty and vagueness in decision making
process. MCDM can help decision-makers to
overcome the uncertainty and the vagueness of
subjective factors.
In this study, we present fuzzy TOPSIS and
fuzzy ELECTRE I methods to cope with facility
location selection problem for a possible second
airport in Ankara. With the view of experts in
aviation sector and comprehensive literature review,
nine main criteria (geographical specifications,
climatic conditions, infrastructure conditions, costs,
transportation, possibility of extension, legal
restrictions and regulations, potential demand,
environmental and social effects) are determined to
analyze with fuzzy TOPSIS and fuzzy ELECTRE I.
Fuzzy TOPSIS and fuzzy ELECTRE I resemble
each other when converting linguistic values into
performance ratings and evaluating the weight of
criteria. On the other hand, fuzzy ELECTRE I aims
to select a single action among a small set of good
actions, fuzzy TOPSIS purposes the selection of a
complete or partial order of the actions. According
to fuzzy TOPSIS method, location A
1
was
determined as the top compromising solution. In this
context, it can be proposed that selecting location A
1
is the best decision for fuzzy TOPSIS method.
According to the ranking order of other alternatives
is A
1
>A
2
>A
5
>A
3
>A
4
. Both fuzzy TOPSIS and fuzzy
ELECTRE I methods suggest very similar solution
to facility location problem for second airport in
Ankara. According to fuzzy ELECTRE I method,
alternatives are ranked as A
1
>A
2
>A
3
>A
4
=A
5
.
Even though facility location selection problem
is so crucial investment decision for a company,
there are a few numbers of studies about aviation
sector. Therefore, this study aims to indicate how
fuzzy TOPSIS and fuzzy ELECTRE I can be used
for facility location selection problem in aviation
sector. Indeed, both methods can be applied in other
sectors like textile, electronics, manufacturing, retail,
logistics etc. in future studies. Also, other MCDM
(fuzzy AHP, fuzzy ANP, fuzzy PROMETHEE etc.)
can be used to solve facility location selection
problems.
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