Indexing Gapped-Factors Using a Tree

We present a data structure to index a specific kind of factors, that is of substrings, called gapped-factors. A gapped-factor is a factor containing a gap that is ignored during the indexation. The data structure presented is based on the suffix tree and indexes all the gapped-factors of a text with a fixed size of gap, and only those. The construction of this data structure is done online in linear time and space. Such a data structure may play an important role in various pattern matching and motif inference problems, for instance in text filtration.

• Type: Journal
• Year: 2008
• Where: IJFCS
• Authors: Pierre Peterlongo, Julien Allali, Marie-France Sagot
• Keywords: Data Structure, IJFCS 2008, Specific Kind, Suffix Tree