Računalniški model plenjenja jat rib: evolucija naprednih taktik pri spremenljivi energiji posameznikov

Blažič, Veronika (author), Lebar Bajec, Iztok (mentor)

V magistrskem delu smo z uporabo računalniškega modela, v katerega smo postavili jato rib in plenilca, preučevali vpliv porabe energije na hitrost, uspešnost in izbor taktik napada plenilca. Poleg energije smo se dotaknili še zmedljivosti plenilca in skušali ovrednotiti združevanje v jate kot obliko uspešnega obrambnega mehanizma. Rezultate smo pridobili z uporabo genetskega algoritma, s pomočjo katerega smo skozi evolucijo plenilcev in plena simulirali naravno evolucijo. Ugotovili smo, da je uspešnost plenilca glede na izbrano taktiko napada močno odvisna od zmedljivosti plenilca. Pokazali smo tudi, da pri nekaterih taktikah napada združevanje rib v jate pripomore k višji stopnji preživetja, pri drugih pa je za ribe boljše, če se odločijo za sebični pobeg.

• Language: Slovenian
• Keywords: simulacija, skupinsko vedenje, jata rib, odnos plenilec-plen
• Work type: Master's thesis/paper
• Organization: FRI - Faculty of Computer and Information Science
• Year: 2019
• PID: 20.500.12556/RUL-107519
• Publication date in RUL: 24.04.2019

Secondary language

• Language: English
• Title: Simulating predator attacks on fish schools: Evolving composite tactics with variable energies

Abstract

We used a computer model containing a flock of fish and a predator to evaluate the effect of energy on predator speed and success of various attack tactics. We also looked into predator confusability and tried to determine whether fish form flocks as a form of a defense mechanism. Results were obtained using a genetic algorithm. We simulated natural evolution of predators and prey, and came to conclusion that the best attack tactic is highly dependant on predator's method of confusability. Moreover, we showed flocking increases the chance of individual survival in certain attack tactics, while it decreases the chance of individual survival in others.

• Keywords: simulation, collective behavior, fish school, predator-prey relation