I want to use the data provided by CoNLL 2012 shared task. They mentioned that the data is semi-offset annotated, I couldn't find any interpretation for the term "semi-offset annotation". Can anyone help?
Offset annotation is a synonym for stand-off annotation, which is
the kind of markup that resides in a location different from the location of the data being described by it. It is thus the opposite of inline markup, where data and annotations are intermingled within a single location.
I haven't looked at the data, but apparently part of the annotated material is included in the annotation data (or you have to include it yourself), so it's not fully stand-off markup.