The article entitled “What do people want from information retrieval?: Top 10 research problems for companies using and selling IR systems was written by W . Bruce Croft, in 1995". The author is a distinguished professor in the Department of Computer Science and has worked at the University of Massachusetts, Amherst since joining in 1979. When people discussed information retrieval systems, they were actually everywhere, including search engines. web search, library catalogs, store catalogs, cookbook indexes, and so on. What I understand through my reading, information retrieval (IR), also called information storage and retrieval (ISR or ISAR) or information organization and retrieval, can be thought of as the art and science of retrieving from a collection of elements a subset that serves the user purpose. For example, IRs include valuable and useful web pages for preparing for a vacation in some place, magazines or articles for an assignment or good reads for that vacation, teaching materials for a learning objective, digital cameras for taking family photos, recipes than to use the available ingredients and facts needed to decide on a corporate merger. This can be considered the recovery of what is useful while leaving behind what is not. People must carefully select the information they need for its quality. From what I understand from reading this, IR is a component of an information system. An information system must ensure that everyone for whom it is intended has the information necessary to complete tasks, solve problems, and make decisions, regardless of what and where that information is available. To this end, an information system must actively understand what users want or need, obtain documents…… middle of paper……rt II: nature and manifestations of relevance. Journal of the American Society for Information Science and Technology, 58(3). 1915-1933.Tseng, Yuen-Hsien. (1998). Solve vocabulary problems with interactive query expansion. Retrieved April 10, 2012, from http://blue.lins.fju.edu.tw/~tseng/papers/solvoc/solvoc.htmTwinisles. (2001). Search and recovery. Retrieved April 10, 2012, from http://www.twinisles.com/dev/research/report/c6.htmFrakes. W. B. & Baeza-Yates, R. (n.d.). Chapter 11: Relevance feedback and other query modification techniques. Retrieved April 18, 2012, from http://orion.lcg.ufrj.br/Dr.Dobbs/books/book5/chap11.htmFrakes. W. B. & Baeza-Yates, R. (n.d.). data structures and algorithms for information retrieval. Retrieved April 18, 2012, from http://www.scribd.com/doc/13742235/Information-Retrieval-Data-Structures-Algorithms-William-B-Frakes