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By Sven Hartmann, Hui Ma

This quantity set LNCS 9827 and LNCS 9828 constitutes the refereed lawsuits of the twenty seventh overseas convention on Database and professional platforms functions, DEXA 2016, held in Porto, Portugal, September 2016.

The 39 revised complete papers offered including 29 brief papers have been conscientiously reviewed and chosen from 137 submissions. The papers speak about a number of themes together with: Temporal, Spatial, and excessive Dimensional Databases; information Mining; Authenticity, privateness, protection, and belief; facts Clustering; allotted and large facts Processing; determination help platforms, and studying; info Streams; info Integration, and Interoperability; Semantic net, and information Semantics; Social Networks, and community research; associated info; facts research; NoSQL, NewSQL; Multimedia facts; own info administration; Semantic internet and Ontologies; Database and knowledge procedure Architectures; question Answering and Optimization; info Retrieval, and key-phrase seek; information Modelling, and Uncertainty.

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Read or Download Database and Expert Systems Applications: 27th International Conference, DEXA 2016, Porto, Portugal, September 5-8, 2016, Proceedings, Part I PDF

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Extra info for Database and Expert Systems Applications: 27th International Conference, DEXA 2016, Porto, Portugal, September 5-8, 2016, Proceedings, Part I

Example text

E4 {Employee, Department: Engineer} Find employees who are engineers and their departments. E5 {Employee: Engineer BEFORE Manager} Find employees who are engineers before coming managers. E6 {Employee: Manager[1/1/1990, 1/1/2000], Engineer[1/1/1990, 1/1/2000]} Find employees who have been engineer and manager from 1990 to 2000 E7 {Employee: Manager[1/1/1990, 1/1/2000] BEFORE Engineer[1/1/1990, 1/1/2000] } Find employees who are engineers before becoming managers from 1990 to 2000 E8 {Employee, Department: Engineer[1/1/1990,1/1/2000]} Find employees and departments where these employees are engineers from 1990 to 2000 E9 {Employee, Department: Manager[1/1/1990,1/1/2000], Engineer[1/1/1990,1/1/2000]} Find employees who have been engineer and manager from 1990 to 2000 and their departments Table 6.

Let q1 and q2 be two points. y and q1 = q2 . Lemma 3. If q1 ≺ q2 , then maxRS(q1 ) ≤ maxRS(q2 ). We can generalize the dominance to be between a k-line and a point Q. Definition 4. ((Line-Point) Dominance). Given a k-line and a point q, q has to be either in LOW (Lk ), or in HIGH(Lk ). We say q dominates Lk , denoted as q ≺ Lk for the former case, and Lk ≺ q for the latter case. Unlike the point dominance where it is possible that two points do not dominate each other, a k-line and a point always fall into one of the two dominance orders.

2. At the beginning, we build the n−1 y-coordinate distance arrays for all points in P , and the auxiliary trees for fast RMQ and range update (Lines 4–7). 3. For each x-interval ai , and for each k ∈ [2 . . |Sai |], we query bmin = RM QTk (r − k + 1, l)5 on tree Tk to find the minimum height of rectangle containing k points, l and r are the indexes of the two points in Sai that form the x-interval ai . Then we add (ai , bmin ) as a candidate rectangle to Lk (Lines 10–14). For each ai , after all the possible k values are processed, the auxiliary trees are updated as described in Sect.

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