Extended Boolean models

Properties of extended Boolean models in information retrieval

SIGIR '94 Proceedings of the 17th annual international ACM SIGIR conference on Research and development in information retrieval

Computationally tractable probabilistic modeling of Boolean operators

Proceedings of the 20th annual international ACM SIGIR conference on Research and development in information retrieval

PIC matrices: a computationally tractable class of probabilistic query operators

ACM Transactions on Information Systems (TOIS)

Information Retrieval from Documents: A Survey

Information Retrieval

A retrospective study of a hybrid document-context based retrieval model

Information Processing and Management: an International Journal