Optimization in one sphere (say, discourse) may lead to suboptimal results in another sphere (say, syntactic parsing). For further development of these ideas, see the slides of my plenary talk, ...

As part of a project on discourse parsing, we have built a discourse segmenter based on syntactic and lexical information. A discourse segmenter takes text as input, and produces as output the minimal ...

A notable system from this era was SHRDLU, which could understand commands related to manipulating objects in a block world by integrating syntactic parsing, semantic interpretation, and inference ...