1 Oct 2003
CS 6210: Module 8
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Merging
Document Topic Trees
¢Norm
for a particular type of document
(e.g. travel leaflets, Univ. department
descriptions)
lCreate
by aligning topics in trees by similarity
joined node at level 1 (e.g.
disease)
doc tree 1 (yellow)
doc tree 2 (blue)
newly joined
node at level 2
(e.g. treatment)
joining nodes at level 2
doc tree 3
(purple)
treatment node
newly joined node at level 3
(e.g. surgery)
disease node
joining nodes at level 3