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Infosys Certified Generative AI Professional: What is the Range of the Top_P Parameter in Generative AI Models?

By: Author Alex Lim

Posted on

Categories Exam

Discover the correct range of values for the top_p parameter used in generative AI and language models. Learn how this sampling parameter affects the diversity and quality of generated text outputs.

Table of Contents

Question

What is the range of Top_P Parameter ?

A. [0,infinity]
B. [0,1]
C. [infinity,0]
D. [-infinity.infinity]

Answer

The correct range for the top_p parameter is:

B. [0,1]

Explanation

Top_p, also known as nucleus sampling, is a parameter used in text generation with language models like GPT-3. It controls the diversity and quality of the generated text by only sampling from the smallest set of tokens whose cumulative probability exceeds the top_p value.

The top_p parameter must be a float value between 0 and 1 (inclusive):

  • A value of 0 means no sampling is done and the model always chooses the token with the highest probability, resulting in deterministic and repetitive outputs.
  • A value of 1 means sampling is done from the full distribution, resulting in more diverse but potentially less coherent outputs.
  • Values between 0 and 1 offer a trade-off between diversity and quality. A common range is 0.7 to 0.9.

So in summary, the valid range for the top_p parameter is [0,1]. Values outside this range, including negative values, infinity, or values greater than 1 are not valid and will typically result in an error when calling the language model’s text generation API.

The other options are incorrect because:

  • [0,infinity] is invalid since probability values must be between 0 and 1
  • [infinity,0] has the order reversed and infinity is not a valid probability
  • [-infinity,infinity] includes negative probabilities which are invalid

Infosys Certified Applied Generative AI Professional certification exam assessment practice question and answer (Q&A) dump including multiple choice questions (MCQ) and objective type questions, with detail explanation and reference available free, helpful to pass the Infosys Certified Applied Generative AI Professional exam and earn Infosys Certified Applied Generative AI Professional certification.