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 “动态规划问题的两个定义特征是什么?”

4 keyword matches

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

Meet the concept

↗

A problem is a dynamic programming problem if it satisfies two conditions: optimal substructure and overlapping subproblems. Optimal substructure means the optimal solution to the overall problem can be constructed from the optimal solutions of its subproblems.

Conditions: The problem can be solved using an algorithmic approach.; The problem can be divided into subproblems.

Meet the concept

↗

Overlapping subproblems occur when the same smaller problem is solved multiple times during a recursive process. The Fibonacci tree makes this concrete by showing repeated calls such as fib(2) and fib(3), which cause redundant computation.

Conditions: The problem can be solved recursively.; The same subproblems appear multiple times in the recursion tree.

Meet the concept

↗

Richard Bellman used the term 'programming' to signify planning and decision making, not writing computer code. The term 'dynamic' refers to the ever-changing nature of the problems being solved.

Conditions: The context is the historical origin of the term 'dynamic programming'.

Meet the concept

↗

Optimal substructure means that the optimal solution to the overall problem can be constructed by efficiently combining the optimal solutions of its subproblems. In the route example, once the shortest SF→LA and LA→SD segments are known, they combine to give the shortest SF→SD route.

Conditions: The problem can be divided into subproblems.; The optimal solution of the main problem depends on the optimal solutions of its subproblems.