Preferences

For Experiment 1, we removed the pronominal anaphora preferences described above in items 3 through 11 and the adjectival anaphora preferences described in items 3 through 7. Also, preferences 1 and 2 above were replaced by the following four new preferences. Thus, both for pronominal and adjectival anaphora, the preferences are for:

• 1. candidates in the same adjacency pair as that of the anaphor
• 2. candidates in the previous adjacency pair to the anaphor
• 2_a. candidates in any adjacency pair containing the adjacency pair of the anaphor
• 2_b. candidates that are in the topic

This change was made in order to test the system's performance when linguistic information is removed and only dialogue structure information is used (preferences 1 through 2_b). In order to guarantee a single final solution, only linguistic preference item 12, for pronominal anaphora, and item 8, for adjectival anaphora (the closest candidate), remain.