Add meta info of Label Control in text classification task

[supercoderhawk]

Is your feature request related to a problem? Please describe.

When I annotate text classification task, I want to add some additional text of the annotated label. This additional text is just confirmed by current annotated text, can't be listed beforehand.

Describe the solution you'd like

For example

I want to annotate following text within predefined labels Chemical Drug, Biologics and Vaccine

A compound 2-acetoxybenzoic acid can be used to treat Inflammation.

This is annotated Chemical Drug. But I want to add a tag aspirin on this annotated label. This is not supported currently.

Describe alternatives you've considered

I formulate this text classification task as a NER task to annotate it. I use entity type as text type, and select some words as region in text randomly and add tag what I required as meta info of this region.

[niklub]

Hi, @supercoderhawk ! Thanks for bringing it up. Do you think this option is something you're looking for?

[supercoderhawk]

Yes. If you bind this part to Label control, and I will appreciate it.

[niklub]

What do you mean exactly from binding it to Label control? do you want to streamline the flow in UI to create meta info right after drawing a span? Since technically, once you create meta as in the example above, it becomes connected to the labeled region.
Speaking of a more streamlined approach, you can alternatively attach <TextArea> tag to your label, then it gives you the handy way to create meta info attached to the Label, like in the screen bellow:

Please, check the flow with this labeling configuration, and happy to get your feedback on it!

<View>
  <Labels name="label" toName="text">
    <Label value="Chemical Drug" background="red"/>
    <Label value="Biologics" background="darkorange"/>
    <Label value="Vaccine" background="orange"/>
  </Labels>
  <TextArea name="transcription" toName="text" editable="true" perRegion="true" required="true" maxSubmissions="1" rows="5" placeholder="Meta Info" displayMode="region-list"/>
  <Text name="text" value="$text"/>
</View>

[supercoderhawk]

Sorry, I mislead you. I mean let Choice control be associated with (or binded with) meta info box, such as you first reply, not Label control. When I select a Choice box, I can add meta info on it.