August 2020
Intermediate to advanced
362 pages
12h 58m
English
Content preview from Swarm Intelligence Algorithms
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Original firefly algorithm 165
The vector
t
i
is a vector of random numbers that are normally distributed
with a zero mean and unity variance. This means that this vector is drawn
from a normal distribution N(0, 1) and updated at every iteration.
The second term β
0
exp[−γr
2
ij
] is the attractiveness term, which mimics
the attractiveness seen by two fireflies i and j. This term comes from the
combination of the light intensity variation due to the inverse-square law with
distance and exponential absorption in the media.
13.2.2 Pseudo-code of FA
The main steps of the FA consists of two loops over all fireflies. The updates
of positions or solution vectors are
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