A factory has a production plan to produce products which are created from number of components and thus create profit. During financial crisis, the factory cannot afford to purchase all the necessary items as usual. Mining of erasable itemsets finds the itemsets which can be eliminated and do not greatly affect the factory's profit. The managers uses erasable itemset (EI) mining to locate...

The longest common extension problem is to preprocess a given string of length n into a data structure that uses S(n) bits on top of the input and answers in T (n) time the queries LCE (i, j) computing the length of the longest string that occurs at both positions i and j in the input. We prove that the trade-off S(n)T (n) = Ω(n logn) holds in the non-uniform cell-probe model provided that the ...

Purpose Patient reported outcome measures (PROMs) are designed to assess patients’ perceived health states or health-related quality of life. However, PROMs are susceptible to missing data, which can affect the validity of conclusions from randomised controlled trials (RCTs). This review aims to assess current practice in the handling, analysis and reporting of missing PROMs outcome data in RCT...

The simplest structural tester is one which merely investigates the static logical structure of an IC through a JTAG 1149.1 Boundary Scan port[1]. This is possible if the IC is implemented with the appropriate private JTAG instructions and uses full scan design[2]. Such a tester is little more than a few power supplies, a device fixturing arrangement, three digital input drivers, one digital ou...

The field of process mining is concerned with supporting the analysis, improvement and understanding of business processes. A range of promising techniques have been proposed for process mining tasks such as process discovery and conformance checking. However there are challenges, originally stemming from the area of data mining, that have not been investigated extensively in context of process...

In order to scale to large multiprocessors or clusters, transactional memories must reduce reliance on synchronisation. Therefore, we consider two favorable formal properties, namely Snapshot Isolation (SI, by which read-only transactions commit without synchronisation), and Genuine Partial Replication (GPR, by which a processor synchronises for a transaction only if it maintains a copy of some...

Alignments provide a robust approach for conformance checking, which has been largely applied in various contexts such as auditing and performance analysis. Alignment-based conformance checking techniques pinpoint the deviations causing nonconformity based on a cost function. However, such a cost function is often manually defined on the basis of human judgment and thus error-prone, leading to ...

Nowadays, all kinds of information systems store detailed information in logs. Process mining has emerged as a way to analyze these systems based on these detailed logs. Unlike classical data mining, the focus of process mining is on processes. First, process mining allows us to extract a process model from an event log. Second, it allows us to detect discrepancies between a modeled process (as...

Recent research has highlighted the importance of data quality issues in environments characterized by extensive data replication, such as Cooperative Information Systems (CISs). While high data quality is a strict requirement for CISs, the high degree of data replication that characterizes such systems can be exploited to improve the quality of data, as different copies of the same data may be...

Solving technical problems involves the use of good techniques. Data processing problems frequently involve a great deal of data manipulation and computing resources. When confronted with problems of this nature, you could approach them using conventional DATA, and/or PROC step methods, or you could use the strengths of the SQL procedure to manipulate and process this data. Attendees will learn...