LogosLink User's Manual
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LogosLink version 2.0.0.2
Reference Models in Corpus Analytics
Many corpus analytics operate on a reference context, ontology or question set for the corpus.
For example, corpus-level semantic collocation analytics show how close denotations to different concepts in a reference ontology appear across the active documents.
And many other corpus analytics show results aggregated by linked context elements taken from a reference context.
Often, the reference context, ontology or question set are just the context, ontology or question set that are embedded in the corpus.
However, this is not always the case.
It is important that you understand how the reference context, ontology or question set is determined by corpus analytics.
In any case, you can always check what reference context, ontology or question set are being used by hovering the cursor over the 
icon near the top right corner of a corpus analytics page.
All reference models are determined by following a similar process.
How a reference context is determined
The reference context for an analytics is determined automatically from the active documents at the time the analytics is run.
If all of the active documents share a topic having an embedded context, this context is used.
If not, the context embedded in the corpus is used, if there is one.
If there isn't one, then no reference context is used.
Not all corpus analytics use a reference context.
For some, it is optional, and will provide extra results if one is available, and fewer results if it isn't.
However, some analytics do need a reference context, and will not run unless one can be successfully determined.
How a reference ontology is determined
The reference ontology for an analytics is determined automatically from the active documents at the time the analytics is run.
If all of the active documents share a topic having an embedded ontology, this ontology is used.
If not, the ontology embedded in the corpus is used, if there is one.
If there isn't one, then no reference ontology is used.
Not all corpus analytics use a reference ontology.
For some, it is optional, and will provide extra results if one is available, and fewer results if it isn't.
However, some analytics do need a reference ontology, and will not run unless one can be successfully determined.
How a reference question set is determined
The reference question set for an analytics is determined automatically from the active documents at the time the analytics is run.
If all of the active documents share a topic having an embedded question set, this question set is used.
If not, the question set embedded in the corpus is used, if there is one.
If there isn't one, then no reference question set is used.
Not all corpus analytics use a reference question set.
For some, it is optional, and will provide extra results if one is available, and fewer results if it isn't.
However, some analytics do need a reference question set, and will not run unless one can be successfully determined.
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last updated on 19/12/2024 13:17