DRL-Prefixspan: A novel pattern growth algorithm for discovering downturn, revision and launch (DRL) sequential patterns
نویسندگان
چکیده
منابع مشابه
PrefixSpan: Mining Sequential Patterns by Prefix- Projected Pattern
Sequential pattern mining discovers frequent subsequences as patterns in a sequence database. Most of the previously developed sequential pattern mining methods, such as GSP, explore a candidate generation-and-test approach [1] to reduce the number of candidates to be examined. However, this approach may not be efficient in mining large sequence databases having numerous patterns and/or long pa...
متن کاملSequential Patterns Using I - PrefixSpan
In this paper, we propose an improvement of pattern growth-based PrefixSpan algorithm, called I-PrefixSpan. The general idea of I-PrefixSpan is to use sufficient data structure for Seq-Tree framework and separator database to reduce the execution time and memory usage. Thus, with I-PrefixSpan there is no in-memory database stored after index set is constructed. The experimental result shows tha...
متن کاملPrefixSpan: Mining Sequential Patterns by Prefix-Projected Growth
Sequential pattern mining is an important data mining problem with broad applications. I t is challenging since one may need to examine a combinatorially explosive number of possible subsequence patterns. Most of the previously developed sequential pattern mining methods follow the methodology of A priori which may substantially reduce the number of combinations to be examined. Howeve6 Apriori ...
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Ordered prime spectra of Boolean products of bounded DRl-monoids are described by means of their decompositions to the prime spectra of the components.
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The molecular program controlling hematopoietic differentiation is not fully understood. Here, we describe a family of zebrafish genes that includes a novel hematopoietic regulator, draculin-like 3 (drl.3). We found that drl.3 is expressed in mesoderm-derived hematopoietic cells and is retained during erythroid maturation. Moreover, drl.3 expression correlated with erythroid development in gata...
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ژورنال
عنوان ژورنال: Open Computer Science
سال: 2012
ISSN: 2299-1093
DOI: 10.2478/s13537-012-0030-8