SemanticIndex
A generic product supporting semantic annotation/indexing and search. For Plone 2.1
Defines the "semantic annotation" relationship
- linking a domain entity to a concept in the taxonomy
- including a few parameters qualifying the annotation (weight).
Supports:
- simple semantic search
- semantic search with computation of semantic similarity
- manual semantic annotation
- assisted semantic annotation (uses automatic extraction of concepts from NL terms in the contents)
- fully-automatic (batch) semantic annotation
- visualization of clusters based on semantic similarity.
Features:
- terms extraction uses the Xpdf and TreeTagger tools
- cluster visualization uses Graphviz and produces SVG output
Limitations:
- currently annotation can exploit only 1 concept taxonomy
- term extraction is available only for English documents/terms
