= TFIDFRetriever.load_local("testing.pkl")retriever_copy.get_relevant_documents("foo")    [Document(page_content='foo', metadata={}),     Document(page_content='foo bar', metadata={}),     Document(page_content='hello', metadata={}),     Document(page_content='world', metadata={})]PreviousTavily Search APINextVespaCreate New Retriever with TextsCreate a New Retriever with DocumentsUse RetrieverSave and loadCommunityDiscordTwitterGitHubPythonJS/TSMoreHomepageBlogCopyright ¬© 2023 LangChain, Inc.
TF-IDF means term-frequency times inverse document-frequency.
TF-IDF means term-frequency times inverse document-frequency. ->: = TFIDFRetriever.load_local("testing.pkl")retriever_copy.get_relevant_documents("foo")    [Document(page_content='foo', metadata={}),     Document(page_content='foo bar', metadata={}),     Document(page_content='hello', metadata={}),     Document(page_content='world', metadata={})]PreviousTavily Search APINextVespaCreate New Retriever with TextsCreate a New Retriever with DocumentsUse RetrieverSave and loadCommunityDiscordTwitterGitHubPythonJS/TSMoreHomepageBlogCopyright ¬© 2023 LangChain, Inc.