fix: Rearrange model dependency

[shaohuzhang1]

fix: Rearrange model dependency

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[shaohuzhang1]

The provided code checks out with no immediate errors or issues related to syntax, logic, or imports. The initialization of AutoModelForSequenceClassification and AutoTokenizer is correctly placed after the necessary libraries have been imported.

Optimization Suggestion: Ensure that the paths used in file operations (like reading data) are correct relative to where the script is being run, as this can lead to FileNotFoundError.

Additionally, consider handling exceptions such as when attempting to load models to avoid silent failures:

from transformers import AutoModelForSequenceClassification, AutoTokenizer

class LocalReranker(MaxKBBaseModel, BaseDocumentCompressor):
    __name__ = "LocalReranker"

    def __init__(self, model_name : str, cache_dir: Optional[str] = None, **model_kwargs):
        super().__init__()
        
        try:
            from transformers import AutoModelForSequenceClassification, AutoTokenizer
        except ImportError as e:
            raise SystemError(f"Failed to import required transformers library(s): {str(e)}")

        self.model_name = model_name
        self.cache_dir = cache_dir if cache_dir else "/path/to/default/cache/dir"
        self.model_kwargs = model_kwargs
        
        # Initialize or load the model here

This modification adds basic error checking for missing dependencies and specifies a default path for caching models. Adjust the path according to how you set up your environment.