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# LanguageModelFeedback

Feedback appropriate for logging or attaching to Feedback Assistant.

```
struct LanguageModelFeedback
```

## Overview

`LanguageModelFeedback` is a namespace with  structures for describing feedback in a consistent way.
[`LanguageModelFeedback.Sentiment`](/documentation/FoundationModels/LanguageModelFeedback/Sentiment) describes the sentiment of the feedback, while
[`LanguageModelFeedback.Issue`](/documentation/FoundationModels/LanguageModelFeedback/Issue) offers a standard template for issues.

Given a model session, use
[`logFeedbackAttachment(sentiment:issues:desiredOutput:)`](/documentation/FoundationModels/LanguageModelSession/logFeedbackAttachment(sentiment:issues:desiredOutput:)) to produce
structured feedback.

```swift
let session = LanguageModelSession()
let response = try await session.respond(to: "What is the capital of France?")

// Create feedback for a problematic response.
let feedbackData = session.logFeedbackAttachment(
    sentiment: LanguageModelFeedback.Sentiment.negative,
    issues: [
        LanguageModelFeedback.Issue(
            category: .incorrect,
            explanation: "The model provided outdated information"
        )
    ],
    desiredOutput: Transcript.Entry.response(...)
)
```

## Topics

### Feedback types

[`Issue`](/documentation/FoundationModels/LanguageModelFeedback/Issue)

An issue with the model’s response.

[`Sentiment`](/documentation/FoundationModels/LanguageModelFeedback/Sentiment)

A sentiment regarding the model’s response.


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