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Log-sum-exp Function
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When applying the log-sum-exp function in optimization, what is the primary reason it is preferred over using the max function directly?

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A

It provides a smooth approximation for optimization algorithms.

B

It always produces a higher output than the max function.

C

It is computationally less expensive than the max function.

D

It can handle negative numbers better than the max function.

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The function smooths the maximum value so that gradient‑based methods can see a slope. Other options are incorrect because Many think it always gives a larger number than max; It might feel easier because max is one comparison.

Key Concepts

Log-sum-exp Function
Optimization Algorithms
Convex Functions
Topic

Log-sum-exp Function

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easy level question

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Definition
Definition

The log-sum-exp function is a convex and differentiable approximation to the max function, commonly used in optimization and machine learning algorithms. It provides a smooth representation of the maximum value among a set of numbers.

Topic Definition

The log-sum-exp function is a convex and differentiable approximation to the max function, commonly used in optimization and machine learning algorithms. It provides a smooth representation of the maximum value among a set of numbers.

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