| 1 | introduction | .... 1 |
| 2 | Logic Grammar and Link Relation | .... 2 |
| 2.1 | Logic Grammar | .... 2 |
| 2.2 | Link Relation in BUP | .... 2 |
| 3 | Extention of Link | .... 3 |
| 3.1 | Parsing Tree and Leftmost Decendant Relation | .... 3 |
| 3.2 | Link Set Definition | .... 4 |
| 3.3 | Indirect use of link set | .... 5 |
| 3.4 | Direct use of link set | .... 6 |
| 4 | Pre-evaluation of Link Relations | .... 7 |
| 4.1 | Earley deduction system | .... 7 |
| 4.2 | Link computation program | .... 9 |
| 4.3 | Correctness of the Computed Link Set | .... 10 |
| 5 | Generation of Strong Link Set | .... 13 |
| 5.1 | Strong Link Set Properties | .... 13 |
| 5.2 | Link Calling Pattern in BUP | .... 15 |
| 5.3 | Least Common Cover | .... 15 |
| 5.4 | Algorithm for Generating a Strong Link Set | .... 16 |
| 6 | Concluding Remarks | .... 17 |
| End | .... 24 |
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