Lexicalized Tree-Adjoining Grammars (LTAG) - ad-teaching.infor...

Equivalent Dot Positions
For the sake of convenience we will consider equivalent two
successive dot positions (according to the tree traversal) that do
not cross a node in the tree.
(γ)
B
A
C D
E F G H I
Example (Equivalent dotted trees)
〈γ, 0, lb〉 ≡ 〈γ, 1, la〉
〈γ, 1, ra〉 ≡ 〈γ, 2, la〉
〈γ, 2, lb〉 ≡ 〈γ, 2.1, la〉
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