Dictionary Matching and Indexing (Exact and with Errors)

Problem Definition Indexing and dictionary matching are generalized models of pattern matching. These models have attained importance with the explosive growth of multimedia, digital libraries, and the Internet. 1. Text Indexing: In text indexing one desires to preprocess a text t, of length n, and to answer where subsequent queries p, of length m, appear in the text t. 2. Dictionary Matching: In dictionary matching one is given a dictionary D of strings p1,…,pdp1,…,pd to be preprocessed. Subsequent queries provide a query string t, of length n, and ask for each location in t at which patterns of the dictionary appear.