def _rerank_results()

in skills/retrieval_augmented_generation/evaluation/provider_retrieval.py [0:0]

• 42 lines of code
• 10 McCabe index (conditional complexity)

def _rerank_results(query: str, results: List[Dict], k: int = 3) -> List[Dict]:
    # Prepare the summaries with their indices
    summaries = []
    print(len(results))
    for i, result in enumerate(results):
        summary = "[{}] Document: {}".format(
            i,
            result['metadata']['chunk_heading'],
            result['metadata']['summary']
        )
        summary += " \n {}".format(result['metadata']['text'])
        summaries.append(summary)
    
    # Join summaries with newlines
    joined_summaries = "\n".join(summaries)
    
    prompt = f"""
    Query: {query}
    You are about to be given a group of documents, each preceded by its index number in square brackets. Your task is to select the only {k} most relevant documents from the list to help us answer the query.
    
    {joined_summaries}
    
    Output only the indices of {k} most relevant documents in order of relevance, separated by commas, enclosed in XML tags here:
    <relevant_indices>put the numbers of your indices here, seeparted by commas</relevant_indices>
    """
    
    client = Anthropic(api_key=os.environ.get('ANTHROPIC_API_KEY'))
    try:
        response = client.messages.create(
            model="claude-3-5-sonnet-20241022",
            max_tokens=50,
            messages=[{"role": "user", "content": prompt}, {"role": "assistant", "content": "<relevant_indices>"}],
            temperature=0,
            stop_sequences=["</relevant_indices>"]
        )
        
        # Extract the indices from the response
        response_text = response.content[0].text.strip()
        indices_str = response_text
        relevant_indices = []
        for idx in indices_str.split(','):
            try:
                relevant_indices.append(int(idx.strip()))
            except ValueError:
                continue  # Skip invalid indices
        print(indices_str)
        print(relevant_indices)
        # If we didn't get enough valid indices, fall back to the top k by original order
        if len(relevant_indices) == 0:
            relevant_indices = list(range(min(k, len(results))))
        
        # Ensure we don't have out-of-range indices
        relevant_indices = [idx for idx in relevant_indices if idx < len(results)]
        
        # Return the reranked results
        reranked_results = [results[idx] for idx in relevant_indices[:k]]
        # Assign descending relevance scores
        for i, result in enumerate(reranked_results):
            result['relevance_score'] = 100 - i  # Highest score is 100, decreasing by 1 for each rank
        
        return reranked_results
    
    except Exception as e:
        print(f"An error occurred during reranking: {str(e)}")
        # Fall back to returning the top k results without reranking
        return results[:k]