Skip to content
START WITH A QUESTION

What would you like to understand?

Find an answer. See the moment it becomes clear. Follow the idea further.

← Concept directory

Answers for “模拟退火如何帮助避免陷入局部极小值?”

3 keyword matches

Understanding your question. You can explore the search results below now.

Find a method

↗

Simulated Annealing helps avoid getting stuck in a local minimum by probabilistically accepting worse solutions, especially in the early stages of the search. This acceptance is controlled by a parameter called 'temperature', which starts high and gradually decreases, allowing the algorithm to explore the solution space more broadly before converging.

Conditions: Requires an initial solution and a high initial temperature.; Uses a cooling schedule to gradually decrease the temperature.; Employs an acceptance criterion to decide whether to accept a worse solution based on the current temperature.

Meet the concept

↗

The temperature parameter in Simulated Annealing controls the probability of accepting worse solutions during the search. Initially, the temperature is high, allowing the algorithm to explore a wide range of solutions, including those that degrade the current route.

Conditions: The algorithm is in the early stages of the search.; The temperature is initially high.; The temperature decreases over time according to a cooling schedule.

Meet the concept

↗

Local Search optimization starts with an initial solution and iteratively applies small changes, such as 2-Opt swaps, to find a better one. Its main limitation is that it can get trapped in a local minimum, a state where no immediate improvement can be found, even though a globally better solution may exist.

Conditions: Requires an initial feasible solution.; Requires a defined neighborhood of solutions (e.g., all solutions reachable by one 2-Opt swap).; Iteratively moves to a better solution in the neighborhood until a local optimum is reached.