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Fix IndexError in LLM Reranking when handling malformed LLM responses #17353

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merged 3 commits into from
Dec 26, 2024
+14 −2
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Fix IndexError in LLM Reranking when handling malformed LLM responses #17353

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bf5af4f
Fix bug #17352 by catching errors for malformed LLM responses
okirmis Dec 22, 2024
e69030e
Fix formatting
okirmis Dec 23, 2024
a6e1377
Merge branch 'main' into bug/17352_gracefully_handle_malformed_responses
okirmis Dec 23, 2024
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14 changes: 12 additions & 2 deletions llama-index-core/llama_index/core/indices/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -116,8 +116,18 @@ def default_parse_choice_select_answer_fn(
continue
answer_nums.append(answer_num)
# extract just the first digits after the colon.
_answer_relevance = re.findall(r"\d+", line_tokens[1].split(":")[1].strip())[0]
answer_relevances.append(float(_answer_relevance))
try:
_answer_relevance = re.findall(r"\d+", line_tokens[1].split(":")[1].strip())[0]
answer_relevances.append(float(_answer_relevance))
except (IndexError, ValueError) as e:
if not raise_error:
continue
else:
raise ValueError(
f"Invalid answer line: {answer_line}. "
"Answer line must be of the form: "
"answer_num: <int>, answer_relevance: <float>"
)
return answer_nums, answer_relevances


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