updated App.select_context to support MultiQueryRetriever of langchain

[sayedsohan]

Added App.select_context to support MultiQueryRetriever of langchain.

[joshreini1]

Thanks @sayedsohan - can you add an example notebook?

[sayedsohan]

Hi, @joshreini1 Here is the https://drive.google.com/file/d/1BaTtrX1r77Ha7Bk8MonoImhcOgMwG8tN/view?usp=sharing notebook where I generated the issue with multiQueryRetrieval for the current version of trulens. Please check

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[sayedsohan]

Initially, I didn't notice the example notebook folder and shared gdrive link. I have added and commited the notebook in trulens_eval/examples/experimental/MultiQueryRetrievalLangchain.ipynb for future references and community help.

[joshreini1]

Thanks @sayedsohan - for the notebook, please clear the output and add some markdown to describe its purpose.

It'd be great also if you can show the full trulens flow including the creation of a recorder and feedback functions that use the context you're enabling.

[sayedsohan]

Hi, @joshreini1 I have updated the notebook with some details and markdown. Also removed the cell output and added trulens recorder with feedback functions.

[joshreini1]

Thanks @sayedsohan - notebook looks great. Will give it a try later

[joshreini1]

In the future it'd be great to improve further so that the intermediate queries are captured and evaluated on their own merit rather than in one monolith.

Regardless - this is still net positive so no reason to block on that.