Comments and notifications

Comments are a Label Studio Enterprise feature that allows communication between reviewers and annotators:

This annotator-reviewer feedback loop is an important tool in your review workflow, allowing you to:

• Speed up the labeling process
• Increase the annotation quality
• Build more solid labeling and review processes

Permissions

All users have the following commenting permissions for any annotations that they would otherwise have access to view:

• View the Comments panel and read previous comments.
• Add new comments.

Additional permissions are as follows:

Action	Annotator	Reviewer and higher roles
Add comment	true	true
View comment	true	true
Resolve/unresolve own comment	true	true
Resolve/unresolve other comments	false	true
Delete own comment	true	true
Delete other comments	false	false
Link/unlink own comment	true	true
Link/unlink other comments	false	false

Add a comment

You can add comments from the Comments panel when viewing an annotation. All users have access to the Comments panel.

Link comments to regions and fields

You can link your comment to a specific area within an annotation.

This can be a region (for example, a bounding box or a span of text) or it can be a field (for example, a classification).

Note the following:

• You can link comments to fields within the labeling configuration. However, if the field is a classification, choice, or taxonomy, you can only attach a comment if there is already a selection.
• You can only link comments to an entire text area. You cannot link comments to regions within text areas.
• Linking is not supported for Ranker or Pairwise fields.

Comment actions

The actions you can perform depend on your user role permissions and whether it’s your comment. You can access comment actions from the overflow menu:

Filter for comments

The Data Manager has several columns to display comment information:

Column	Description	View permissions
Comment texts	The text in the comment.	All user roles
Comments	Total number of comments for a particular task.	All user roles
Unresolved comments	Total number of comments that are not yet resolved.	All user roles
Commented at	The date and time at which the comment was made.	All user roles except Annotator
Commented authors	User who wrote comments.	All user roles except Annotator

Require comments

You can configure the project so that annotators and reviewers are required to leave comments after taking specific actions:

• Annotation > Annotating Options > Annotators must leave a comment on skip
• Review > AReviewers must leave a comment on reject

Comment notifications

To see notifications, click your user profile icon in the upper right.

Use the overflow menu to mark notifications as read or unread.

Annotators

Annotators can write comments on their own annotations.

Sent notifications

When an annotator writes a comment, the users who are notified depend on whether it is the first comment on the annotation:

• If this is the first comment on an annotation, then all users within a project that have the role of Reviewer or higher see the comment in their notification list.
• If this comment is in response to an ongoing discussion within the comments panel, then only users who are have added comments to the annotation will see a notification.

Received notifications

An annotator receives a notification any time another user leaves a comment on one of their annotations.

Reviewers and other users

Reviewers can write comments on annotations that they are reviewing. This applies to users with the Reviewer, Manager, Admin, and Owner role.

Sent notifications

When a reviewer writes a comment, then the users who are notified depend on their role and whether they have also left comments:

• Annotators get a notification for all comments on the annotations they created.
• If other users have also left comments on the annotation (for example, if multiple users are reviewing the annotation), then they will also be notified when a new comment appears.

Received notifications

A reviewer receives a notification when:

• If the comment is the first comment on an annotation, then all users within a project that have the role of Reviewer or higher see the comment in their notification list.
• If you have already left a comment on an annotation, you receive a notification when any user, regardless of role, adds a new comment.