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nlplab / brat

brat rapid annotation tool (brat) - for all your textual annotation needs
http://brat.nlplab.org
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making event attributes mandatory #874

Open andorm opened 12 years ago

andorm commented 12 years ago

Is it possible to mark event attributes as mandatory? So that the annotator gets an error if they didn't select an attribute. I need to have tense marked on all events, currently defied as:

Tense Arg:, Value:Past|Present|Future|Unspecified

ghost commented 12 years ago

I think this is already supported as a part of the verification mechanism, but I do believe it has to be turned on explicitly and I am not sure in regards to the documentation status. @spyysalo: I think you are better suited than me for this one.

spyysalo commented 12 years ago

@andorm : using multi-valued attributes as you do now is a good way to make sure an attribute is present, but there isn't currently any way to mark one of the possible values as erroneous (i.e. indicating lack of a mandatory choice).

There's a "special argument" mechanism in the config system which would allow something like

Tense Arg:Verb, Value:Past|Present|Future|Unspecified, <MISSING>:Unspecified

Would this work?

andorm commented 12 years ago

thank you for the recommendation, i'll have to read up on how the macros work. just trying it quickly now didn't work, but i must be missing something.

spyysalo commented 12 years ago

@andorm : sorry, that wasn't clear -- this isn't implemented yet, I was just asking if this type of implementation (and, to a lesser extent, this syntax) would resolve what you need.

andorm commented 12 years ago

ideally, it would be nice to be able to tell Brat to check if an attribute has a value assigned. The suggestion above seems to check whether "Unspecified" value is missing and that wouldn't be as useful. So something along the lines of

Tense Arg:Verb, Value:Past|Present|Future|Unspecified, ValueSelected=TRUE