Heuristic methods based on biological aspects have been successfully used in many computer science areas of research, including information retrieval (IR). This let us ask: why there is no biological environment for the problem of information retrieval. In this paper, we tried to introduce a new biological environment for information retrieval that broad the modeling concept from the mathematical formula that simulates the basic elements of IR problem to their dual schemas in biology. It's a new way of thinking of, and dealing with, the problem of information retrieval.
M. R. Girgis, A. A. Aly, B. A. Abdel Latef, and B. R. El-Gamil: "Biological Environment for Information Retrieval"; International Conference on Intelligent Systems Design and Applications (ISDA’06), 1182-1188, China, 2006.