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These volumes set LNCS 8421 and LNCS 8422 constitutes the refereed court cases of the nineteenth overseas convention on Database structures for complicated purposes, DASFAA 2014, held in Bali, Indonesia, in April 2014. The sixty two revised complete papers awarded including 1 prolonged summary paper, four commercial papers, 6 demo shows, three tutorials and 1 panel paper have been conscientiously reviewed and chosen from a complete of 257 submissions. The papers hide the subsequent subject matters: large facts administration, indexing and question processing, graph info administration, spatio-temporal facts administration, database for rising undefined, info mining, probabilistic and unsure information administration, net and social facts administration, protection, privateness and belief, key-phrase seek, info movement administration and information quality.
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Extra info for Database Systems for Advanced Applications: 19th International Conference, DASFAA 2014, Bali, Indonesia, April 21-24, 2014. Proceedings, Part I
In: Proceedings of SIGIR (2011) 2. : How does search behavior change as search becomes more difficult? In: Proc. of the 28th International Conference on Human Factors in Computing Systems, pp. 35–44 (2010) 3. : Top-k selection queries over relational databases: Mapping strategies and performance evaluation. ACM Trans. Database Syst. TODS 27(2), 153–187 (2002) 4. ” in SQL. ACM SIGMOD Rec. 26(2), 219–230 (1997) 5. : Integrating DB and IR technologies: What is the sound of one hand clapping. In: CIDR 2005, pp.
We implemented the search evaluation techniques described earlier, while retaining the current design of Data Near Here. To test our techniques over different hierarchy “shapes”, we developed 8 hierarchies, each with different aggregation characteristics. In addition, we keep a ninth “no hierarchy”, with every leaf treated as a root. We developed three test suites of searches, using search terms that we know from experience to be frequently used by our scientist and with very different performance characteristics: time-only, spaceonly, and time-and-space.
If the closest and furthest edges of the variable’s range have the same score, we also deem the children not interesting, as the children’s scores cannot be higher than the score of the closest edge of the variable. Again, only the parent entry is returned. In these cases, only a subset of the entire catalog’s entries is scored. The description so far is without the filter. The filter must operate over interval summaries and avoid false negatives. Therefore, for a particular cutoff score (lowestScore), our filter must return (at least) all entries that would achieve a higher score using our similarity measure.