- contents -- entities -- signals -- coreference -- relationships -- general guidelines -- recipe -- histopath -- radiology -
- previous -- next -
has_location
Arguments
A has_location relationship associates a condition to a locus.
Entities do not have to have relationships
Conditions are not required to take part in has_location relationships.
A condition may have no locus specified.
- For example,
- "He was forgetful and confused."
- The locus of "Confusion" is not stated.
- A relationship with the locus will not be annotated.
Inferring relations with clinical knowledge
A locus for a condition may only be implicit in the text, and require domain knowledge to infer. In this case, it will be annotated.
- For example,
- "There was evidence of neurological involvement: she has become forgetful, and at times confused. A CT scan showed atrophy. There was no evidence of brain metastases."
- We might infer that "atrophy" was located in the "brain".
- The has_location relationship will be annotated.
has_location and multiple Loci
A condition may have several loci. One location has_relationship will be created for each locus.
- For example,
- "pain in his left buttock and hip"
- A has_location relationship will be created associating "pain" with "buttock"
- A second has_location relationship will be created associating "pain" with "hip"
- (Note that the general guideline on sets and conjunctions requires "pain" to be annotated as a single investigation)