top-k query processingtop-k semanticsuncertain data settingsuncertain databasesTop-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between score and uncertainty makes traditional techniques inapplicable. We introduce new ...
Top-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between score and uncertainty makes traditional techniques inapplicable. We introduce new probabilistic formulations for top-k queries. Our formulations are based on "m...
Soliman M, Ilyas I, Chang K. Top-k query processing in uncertain databases. ICDE, 2007. Google Scholar Soliman M, Ilyas I, Chang K. Probabilistic top-k and ranking-aggregate queries. ACM TODS, 2008. Google Scholar Soliman M, Ilyas I. Ranking with Uncertain Scores. ICDE, 2009. Google Sc...
Top-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between query scores and data uncertainty makes traditional techniques inapplicable. We introduce URank, a system that processes new probabilistic formulations of top-k quer...
In: Proceedings of ICDE (2007) Sarma, A.D., Benjelloun, O., Halevy, A., Widom, J.: Working models for uncertain data. In: Proceedings of ICDE (2006) Soliman, M.A., Ilyas, I.F., Chang, K.C.-C.: Top-k query processing in uncertain databases. In: Proceedings of ICDE (2007)...
Motivated by the shortcomings of both queries above, in this paper, we formulate an important query, namely probabilistic top-k dominating (PTD) query, in the context of uncertain databases. Specifically, a PTD query obtains k uncertain objects in an uncertain database that are expected to be ...
Keywords: probabilistic databases; uncertain top-k query; rank query; query algorithms; data processing 1 引 言 不确定数据广泛存在于文本分析、信息检索和社交网络等各种应用之中。产生不确定数据的原因有多种, 如数据噪声、数据丢失、传输延迟, 以及测量不精确或不完整等多方面因素。另外, 大规模应用如...
计算机研究与发展JournalofComputerResearchandDevelopmentISSN1000—139/CN11—1777/TP46Suppl.:80—86,009PP环境中不确定数据Top—k查询处理算法孙永佼东北大学信息科学与工程学院沈阳王国仁110004gence3@gmail.cornPPTop—kQueryProcessingAlgorithmsoverUncertain
A Method for Processing Top-k Continuous Query on Uncertain Data Stream in Sliding Window Model The data stream is a series of data generated at sequential time from different sources. Processing such data is very important in many contemporary applic... RASR Wahab,SNM Rum,H Ibrahim,... - ...
不确定数据库中概率top_k和排序查询算法