ABSTRACT
This chapter describes requirements for incremental representations. To be used for conceptualization, a representational formalism must have additional properties. The changes in the representation can be subdivided into adding or deleting refOs and designations and adding, deleting, and modifying the attributes associated with a refO or a designation. The dynamics of the environment and incremental processing necessitate changes in the representation of the states of affairs. Summing up, underspecification can be employed for incremental language generation, because an underspecified representation can be extended without reverting earlier made planning decisions. The main reason is that the knowledge representation from which language is generated usually is completely available. The advantage of Constraint Language for Lambda Structures and underspecification formalisms in general is that semantic representations for utterances like these need not be generated at once.
