Daniel Brown 
Mastering Information Retrieval and Probabilistic Decision Intelligence Technology [PDF ebook] 

Aimed at information managers in organisations including local/state government, libraries and financial services. Mastering Information Retrieval and Probabilistic Decision Intelligence Technology reviews the management of information and its focus to people empowered to make decisions. It provides managers and students of information with the resources to understand and start to deploy information retrieval systems throughout their organisation and the tools to respond effectively to the enormous developments in new technologies. – Written by an expert practitioner in the field- Helps to summarise and explain the basic issues- Covers both benefits and challenges likely to be encountered in implementing an Information Retrieval system