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Evals With Explanations

Google Colaboratory
See "Classifications with Explanations Section"
It can be hard to understand in many cases why an LLM responds in a specific way. The explanation feature of Phoneix allows you to get a Eval output and an explanation from the LLM at the same time. We have found this incredibly useful for debugging LLM Evals.
from phoenix.experimental.evals import (
RAG_RELEVANCY_PROMPT_RAILS_MAP,
RAG_RELEVANCY_PROMPT_TEMPLATE,
OpenAIModel,
download_benchmark_dataset,
llm_classify,
)
model = OpenAIModel(
model_name="gpt-4",
temperature=0.0,
)
#The rails is used to hold the output to specific values based on the template
#It will remove text such as ",,," or "..."
#Will ensure the binary value expected from the template is returned
rails = list(RAG_RELEVANCY_PROMPT_RAILS_MAP.values())
relevance_classifications = llm_classify(
dataframe=df,
template=RAG_RELEVANCY_PROMPT_TEMPLATE,
model=model,
rails=rails,
provide_explanation=True
)
#relevance_classifications is a Dataframe with columns 'label' and 'explanation'
The flag above can be set with any of the templates or your own custom templates. The example below is from a relevance Evaluation.