_evaluate_strings() — langchain Function Reference

Architecture documentation for the _evaluate_strings() function in eval_chain.py from the langchain codebase.

Function python LangChainCore Runnables calls 3 called by 1

Entity Profile

LangChainCore→ Runnables→ _evaluate_strings() — langchain Function Reference

Dependency Diagram

graph TD
  58783571_5c52_7ea5_40a4_0d8f9c7e8705["_evaluate_strings()"]
  6b783916_2e41_8d2a_dba2_81813096b7c4["ContextQAEvalChain"]
  58783571_5c52_7ea5_40a4_0d8f9c7e8705 -->|defined in| 6b783916_2e41_8d2a_dba2_81813096b7c4
  f9194a2f_4428_16e2_7306_921eac4fbfb5["_evaluate_strings()"]
  f9194a2f_4428_16e2_7306_921eac4fbfb5 -->|calls| 58783571_5c52_7ea5_40a4_0d8f9c7e8705
  a793cd45_183a_2ae3_7247_435d172fa959["_prepare_output()"]
  58783571_5c52_7ea5_40a4_0d8f9c7e8705 -->|calls| a793cd45_183a_2ae3_7247_435d172fa959
  f9194a2f_4428_16e2_7306_921eac4fbfb5["_evaluate_strings()"]
  58783571_5c52_7ea5_40a4_0d8f9c7e8705 -->|calls| f9194a2f_4428_16e2_7306_921eac4fbfb5
  c8ae767c_58c1_d764_8793_0d3dfcb69a27["_prepare_output()"]
  58783571_5c52_7ea5_40a4_0d8f9c7e8705 -->|calls| c8ae767c_58c1_d764_8793_0d3dfcb69a27
  style 58783571_5c52_7ea5_40a4_0d8f9c7e8705 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/evaluation/qa/eval_chain.py lines 310–329

    def _evaluate_strings(
        self,
        *,
        prediction: str,
        reference: str | None = None,
        input: str | None = None,
        callbacks: Callbacks = None,
        include_run_info: bool = False,
        **kwargs: Any,
    ) -> dict:
        result = self(
            {
                "query": input,
                "context": reference,
                "result": prediction,
            },
            callbacks=callbacks,
            include_run_info=include_run_info,
        )
        return self._prepare_output(result)