求翻译：然后利用捕食-被捕食粒子群算法[15]寻找最佳阈值，在捕食－被捕食的粒子群优化算法中，捕食者追逐被捕食者的中心，加速收敛，而被捕食者逃离捕食者，促进多样性，可有效避免局部极值的出现；是什么意思？

Then use the predator - prey particle swarm algorithm [15] to find the optimal threshold, predator - prey particle swarm optimization, predators chasing prey center, to accelerate the convergence, while the prey to flee predators. promotion of diversity, which can effectively avoid the emergence of

Predator - were arrested and then use the particle cluster algorithm [ 15] looking for the best threshold value, the Predator - the particle Group arrested optimization algorithm, the predator and the chase was arrested, speed up the Convergence Center, were arrested, and the escape from predators,

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And use the predator-prey Particle Swarm algorithm [15] to find the best threshold, Particle Swarm Optimization algorithm in predator-prey, predator arrested Chase food centers, accelerate convergence, while fleeing a predator the food, promoting diversity, can effectively avoid local extremum occur

Then the use preys on - is preyed on grain of subgroup algorithm (15) to seek the best threshold value, in preys on - a grain of subgroup which preys on is optimized in the algorithm, the predator pursues by predator's center, the accelerating convergence, but is fled by the predator the predator, t