Yes, Phoenix supports annotating individual documents (document annotations) for retrieval systems, allowing you to evaluate each document with metrics like relevance and precision, as described in the documentation (<https://arize.com/docs/phoenix/tracing/concepts-tracing/annotations-concepts#annotation-targets|Annotations Concepts>). However, the UI currently focuses on span-level annotations, and direct document-level annotation via the UI is not explicitly documented or available.
To annotate individual documents, you should use the Phoenix client SDKs (Python or TypeScript) to log document annotations programmatically, specifying the `span_id` and `document_position` for each annotation (<https://arize.com/docs/phoenix/tracing/how-to-tracing/feedback-and-annotations/llm-evaluations#document-evaluations|LLM Evaluations: Document Evaluations>). Would you like more detail or a code example for programmatic document annotation?
Sources:
- <https://arize.com/docs/phoenix/tracing/concepts-tracing/annotations-concepts#annotation-targets|Annotations Concepts>
- <https://arize.com/docs/phoenix/tracing/how-to-tracing/feedback-and-annotations/llm-evaluations#document-evaluations|LLM Evaluations: Document Evaluations>
