Sequential pattern mining is one of the important issues in the research of data mining (Agrawal & Srikant, 1995; Ayres, Gehrke, & Yiu, 2002; Han, Pei, & Yan, 2004; Lin & Lee, 2004; Lin & Lee, 2005b; Roddick & Spiliopoulou, 2002). A typical example is a retail database where each record corresponds to a customer’s purchasing sequence, called data sequence. A data sequence is composed of all the...

environmental characteristics, including the quality of green spaces, constitute one of the determinants of buildings (house & apartment) transaction prices. in this research, impact of urban green space on building's transaction prices (rials/m2) in karaj region, district 1 (jahanshahr), was analyzed. therefore, a questionnaire concerning building characteristics and transaction prices wa...

ion transactions Abstraction instructional transactions enable the learner to acquire class, subclass, and instance relationships between knowledge objects. Abstraction transactions promote the ability to transfer or use a skill acquired for one set of instances or subclasses with a new8 set of instances or subclasses. Abstraction transactions enable the learner to generalize knowledge by acqui...

We present a formal framework that can be used to specify and study a number of different semantics for rule execution in active databases. We shall consider the core of several active rule languages that are already available (e.g., Ariel, Starburst and HiPAC) but whose rule execution is specified only by informal descriptions. The framework is based on a generic active rule language and relie...

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To test distributed software in the Internet we need many experimental sites in diierent physical locations. To ease the experimental setup, we have developed a facility for a study of distributed transaction processing in the Internet. The facility emulates remote sites by local machines, and emulates a true Internet communication environment in a local area network, by routing the inter-site ...

The installed capacity of distributed generation (DG) based on renewable energy sources has increased continuously in power systems, and its market-oriented transaction is imperative. However, traditional transaction management based on centralized organizations has many disadvantages, such as high operation cost, low transparency, and potential risk of transaction data modification. Therefore,...