ACM Transactions on Information Systems

Experimental approaches are widely employed to benchmark the performance of an information retrieval (IR) system. Measurements in terms of recall and precision are computed as performance indicators. Although they are good at assessing the retrieval ...

The rapid evolution of XML from a mere data exchange format to a universal syntax for encoding domain-specific information raises the need for new query languages specifically conceived to address the characteristics of XML. Such languages should be ...

We propose a genre taxonomy as a knowledge repository of communicative structures or "typified actions" enacted by organizational members. The genre taxonomy is intended to help people make sense of diverse types of communicative actions and provide ...