Lecture 25 — Dynamic Programming II
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چکیده
The top-down approach is based on running the recursive code as is, generating implicitly the recursion structure from the root of the DAG down to the leaves. Each time a solution to a smaller instance is found for the first time it generates a mapping from the input argument to its solution. This way when we come across the same argument a second time we can just look up the solution. This process is called memoization, and the table used to map the arguments to solutions is called a memo table.
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