Regarding root_node & filters of BaseRetriever

[dkbs12]

Hi,
When I was run the BaseRetriever, I faced the Typeerror as below;

retriever.run(query="Who is the father of Arya Stark?", top_k=5)
╭─────────────────────────────── Traceback (most recent call last) ────────────────────────────────╮
│ in <cell line: 1>:1 │
╰──────────────────────────────────────────────────────────────────────────────────────────────────╯
TypeError: BaseRetriever.run() missing 1 required positional argument: 'root_node'

What is root_node and how can I input the root_node?

Second, I'm trying to filter the result of the above retriever by score.
Is there any method to use the argument 'filters' of BaseRetriever to solve this problem?

I appreciate if you would give me any advice.

[ZanSara]

Hey @dkbs12, you should not be using BaseRetriever directly. Please use one of the implementations. Have a look at the documentation for all the details: https://docs.haystack.deepset.ai/docs/retriever