| | 1 | == Syntax == |
| | 2 | |
| | 3 | === What? === |
| | 4 | |
| | 5 | - reveal and describe relationships among words |
| | 6 | - on various levels: |
| | 7 | - noun, verb prepositional phrases, clauses |
| | 8 | - dependency relation |
| | 9 | |
| | 10 | |
| | 11 | === Why? === |
| | 12 | |
| | 13 | - syntactic units are carriers of meaning |
| | 14 | - e.g. "in the city" |
| | 15 | - meaning of "in", "the" is unclear, or very complicated |
| | 16 | - meaning of "in the city" is simply "where" |
| | 17 | - usable for mining information, question answering |
| | 18 | |
| | 19 | |
| | 20 | === How? === |
| | 21 | |
| | 22 | - prerequisites |
| | 23 | - morphological information (e.g. part of speech, number, gender) |
| | 24 | - lexical semantic information (e.g. "pregnant" goes with women only) |
| | 25 | - statistical methods |
| | 26 | - annotated corpus -> inference of rules |
| | 27 | - hard to customize |
| | 28 | - rule-based methods |
| | 29 | - hard to develop and maintain the grammar information |
| | 30 | - easy to customize |
| | 31 | |
| | 32 | ... to be continued |
| | 33 | |
| | 34 | |
