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Pattern matching with wildcards and length constraints (PMWL) is a complex problem which has important applications in bioinformatics, network security and information retrieval. Existing algorithms use the traditional left-most strategy when selecting among multiple candidate matching positions, which leads to incomplete final matching results. This paper presents a new data structure CluTree and...
This paper focuses on pattern matching with wildcard, gap-length and one-off conditions. It is difficult to achieve optimal solutions. We propose an FNP algorithm based on Free-Node Optimum Pruning. Each Free-Node set is a set of nodes labeled by the same number which appear on different layers in a directed graph structure WON-Net. Compared on biological data and artificial data, experimental results...
Sequential pattern mining is an important research task in many domains, such as biological science. In this paper, we study the problem of mining frequent patterns from sequences with wildcards. The user can specify the gap constraints with flexibility. Given a subject sequence, a minimal support threshold and a gap constraint, we aim to find frequent patterns whose supports in the sequence are no...
Pattern matching is an important task, which is widely used in many fields, such as information retrieval and bioinformatics. Recently, a much more flexible pattern matching problem with wildcards has been proposed. Chen et al. introduced local constraints, global constraints and the one-off condition into the task of pattern matching, and the most representative algorithm SAIL was designed. However,...
Summary form only given. With the rapid development of computer, communication and networking technologies, Web information resources are becoming increasingly rich, and on-line applications are required to be more and more flexible. Therefore, a new generation of information models and mechanisms for these information processing requirements has become a major challenge. This talk will discuss four...
Finding patterns in biological sequences owns a significant impact on many real-world applications such as biological sequence analysis, text indexing, stream data mining, and sensor networking. The problem of Pattern Matching with Wildcards and Length Constraints is to find all locations of occurrences of a pattern P in a text T, which can be a biological sequence, text string, etc. The user can...
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