This is a guest lecture by Prof. Dipti Misra
| Phrase Structure Grammar (PSG) | Dependency Grammar (DG) |
|---|---|
| - Preserves the structural representation | - Does not preserve the structure |
| of the sentence inherently | of the sentence |
| - It allows for recursion, similar embedded | - Captures more of the semantic meaning |
| clauses can be nested within the tree | and relations between nodes |
| - It is a context-free approach, meaning | - Is it context-sensitive?? |
| that elements surrounding a set of elements | |
| to be decided do not affect the decision itself |
| Constituent Tree | Dependency Tree |
|---|---|
| - Abstract nodes | - Lexical nodes |
| - Order matters | - Order not captured |
| - Undirected graph with no labels | - Directed graph with labels |
This grammatical perspective looks at relations between words, and is thus similar to Dependency Grammar.
“Yesterday Sabina opened the lock with this key at my home”