Update generation.py

[MingzeDong]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @MingzeDong, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the in-context generation process by introducing a new minimum context ratio parameter and adjusting the default context ratio. These modifications aim to provide more precise control over the context window, potentially leading to improved generation outcomes or better resource utilization.

Highlights

• New Parameter Introduction: A new parameter, context_ratio_min, has been introduced to specify the minimum value for the context ratio during in-context generation. This parameter is integrated into the _run_incontext_generation and generate functions, and is also available as a command-line argument --context-ratio-min with a default value of 0.2.
• Default Context Ratio Update: The default value for the context_ratio parameter has been updated from 0.25 to 0.4 in the generate function and its corresponding command-line argument.

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[gemini-code-assist]

Code Review

This pull request introduces a new parameter context_ratio_min to control the range of context ratios used in in-context generation, and updates the default value for context_ratio. The changes are correctly propagated through the CLI and function calls. My feedback includes a suggestion to improve the clarity of the new command-line argument's help text and to add validation to ensure context_ratio_min is not greater than context_ratio for robustness.

[gemini-code-assist]

A validation check is missing to ensure context_ratio is greater than or equal to context_ratio_min. This could lead to unexpected behavior or errors if invalid parameter values are provided. Consider adding a check at the beginning of the generate function:

if context_ratio < context_ratio_min:
    raise ValueError("context_ratio must be greater than or equal to context_ratio_min")

[gemini-code-assist]

The help texts for --context-ratio and --context-ratio-min could be more descriptive to clarify their relationship. Since a random ratio is likely sampled between these two values, it's helpful to state that --context-ratio is the maximum of that range.

Suggested change

	parser.add_argument("--context-ratio", type=float, default=0.4, help="Context ratio passed to in-context generation")
	parser.add_argument("--context-ratio-min", type=float, default=0.2, help="Min value of context ratio")
	parser.add_argument("--context-ratio", type=float, default=0.4, help="Maximum context ratio for in-context generation. A random ratio is sampled between this and context-ratio-min.")
	parser.add_argument("--context-ratio-min", type=float, default=0.2, help="Minimum context ratio for in-context generation.")