Uncertain Data Management

Dec 20, 2024

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Dive into the complex world of probabilistic query answering on uncertain data. Understand the framework, definitions, and techniques to efficiently tackle this challenge.

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uncertain data management
probabilistic queries
query types
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Uncertain Data Management

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Probabilistic/Uncertain Data Management -- III

Probabilistic/Uncertain Data Management -- III. Dalvi, Suciu. “Efficient query evaluation on probabilistic databases”, VLDB’2004. Das Sarma et al. “Working models for uncertain data”, ICDE’2006. Slides based on the Suciu/Dalvi SIGMOD’05 tutorial. What is a Probabilistic Database ?.

605 views • 33 slides

Probabilistic/Uncertain Data Management

Probabilistic/Uncertain Data Management. Dalvi, Suciu. “Efficient query evaluation on probabilistic databases”, VLDB Jrnl, 2004 Das Sarma et al. “Working models for uncertain data”, ICDE’2006. Slides based on the Suciu/Dalvi SIGMOD’05 tutorial. Databases Today are Deterministic.

620 views • 35 slides

Density-Based Clustering of Uncertain Data (KDD2005)

HKU Department of Computer Science Database Research Seminar 18th May 2006. Density-Based Clustering of Uncertain Data (KDD2005). Authors: Hans-Peter Kriegel and Martin Pfeile Presenter: Chui Chun Kit (Mphil) ckchui@cs.hku.hk http://www.cs.hku.hk/~ckchui

1.35k views • 105 slides

Representation Formalisms for Uncertain Data

Representation Formalisms for Uncertain Data. Jennifer Widom with Anish Das Sarma Omar Benjelloun Alon Halevy and other participants in the Trio Project. !! Warning !!. This work is preliminary and in flux Ditto for these slides Luckily I’m among friends…. Some Context.

486 views • 35 slides

Probabilistic/Uncertain Data Management -- IV

Probabilistic/Uncertain Data Management -- IV. Dalvi, Suciu. “Efficient query evaluation on probabilistic databases”, VLDB’2004. Sen, Deshpande. “Representing and Querying Correlated Tuples in Probabilistic DBs”, ICDE’2007. INST = P (TUP) N = 2 M. TUP = {t 1 , t 2 , …, t M }. = all tuples.

406 views • 27 slides

Uncertain

Uncertain. Beginning the ^ Journey Foundation Students’ Expectations and Experience. Dr Lalage Sanders, Dr Annette Daly & Katherine Regan SEET Project Cardiff School of Health Sciences. Rationale - H.E. Perspective.

451 views • 32 slides

Uncertain Data Management for Sensor Networks

Uncertain Data Management for Sensor Networks. Amol Deshpande, University of Maryland. (joint work w / Bhargav Kanagal , Prithviraj Sen , Lise Getoor , Sam Madden) . Distributed measurement networks (e.g. GPS). RFID. Industrial Monitoring. Motivation: Sensor Networks. Wireless sensor

733 views • 55 slides

Clustering Uncertain Data Items

Clustering Uncertain Data Items. TEAM 3. Outline. Problem Statement Our Contributions Description of Methods Comparisons Trends in clustering Future work Conclusions References. Problem Statement. In many applications data contains inherent uncertainty.

358 views • 21 slides

Cleaning Uncertain Data with Quality Guarantees

Cleaning Uncertain Data with Quality Guarantees. Reynold Cheng, Jinchuan Chen, Xike Xie 2008 VLDB. Presented by SHAO Yufeng. Outline. Background Related works Data and Query model PWS-quality model Cleaning procedure Experiments result. Uncertain Database(old model).

718 views • 54 slides

Top- k Queries on Uncertain Data

Top- k Queries on Uncertain Data. 指導教授：陳良弼老師報告者：鄧雅文 97753034. Outline. Introduction Related Work Problem Formulation Future Work. Introduction. Top- k query on certain data Rank results according to a user-defined score Important for explore large databases

373 views • 15 slides

OLAP over Uncertain and Imprecise Data

OLAP over Uncertain and Imprecise Data. Doug Burdick, Prasad Deshpande, T. S. Jayram , Raghu Ramakrishnan , Shivakumar Vaithyanathan. Presented by Raghav Sagar. OLAP Overview. Online Analytical Processing (OLAP)

565 views • 38 slides

OLAP Over Uncertain and Imprecise Data

OLAP Over Uncertain and Imprecise Data. T.S. Jayram (IBM Almaden) with Doug Burdick (Wisconsin), Prasad Deshpande (IBM), Raghu Ramakrishnan (Wisconsin), Shivakumar Vaithyanathan (IBM). Dimensions in OLAP. Automobile. All. Truck. Sedan. Civic. Camry. F150. Sierra. Location. All. East.

323 views • 20 slides

Clustering Uncertain Data

CS 290 Project Nick Larusso Brian Ruttenberg. Clustering Uncertain Data. Motivation. Many data acquisition tools provide uncertain data eg. sensor networks, image analysis, etc. Records are no longer points in multidimensional space, but regions based on the certainty of the data

372 views • 24 slides

Cleaning Uncertain Data with Quality Guarantees

Very Large Database Conference 2008. Cleaning Uncertain Data with Quality Guarantees. Dr. Reynold Cheng Department of Computer Science The University of Hong Kong ckcheng@cs.hku.hk http://www.cs.hku.hk/~ckcheng/. A joint work with: Jinchuan Chen (Hong Kong Polytechnic University)

698 views • 51 slides

Efficiently Querying Contradictory and Uncertain Genealogical Data

Efficiently Querying Contradictory and Uncertain Genealogical Data. Lars E. Olson and David W. Embley DEG Lab BYU Computer Science Dept. Supported by National Science Foundation Grant #0083127. Introduction. Integrating data from multiple sources Some data just doesnâ€™t fit the data model

242 views • 15 slides

Cleaning Uncertain Data for Top-k Queries

Cleaning Uncertain Data for Top-k Queries. Luyi Mo , Reynold Cheng, Xiang Li, David Cheung, Xuan Yang The University of Hong Kong { lymo , ckcheng , xli, dcheung , xyang2}@ cs.hku.hk. Outline. Introduction Quality Metric for Top-k Queries Definition Efficient computation Results

732 views • 54 slides

COMP9315 Uncertain and Probabilistic Data

COMP9315 Uncertain and Probabilistic Data. Simplified version of SIGKDD08 by J. Pei, M. Hua, Y. Tao, X. Lin. Outline. Uncertainty and uncertain data, where and why? Models for uncertain and probabilistic data OLAP, Mining, and Queries on uncertain and probabilistic data.

1.37k views • 100 slides

Robust Ranking of Uncertain Data

Robust Ranking of Uncertain Data. Da Yan and Wilfred Ng The Hong Kong University of Science and Technology. Outline. Background Probabilistic Data Model Related Work U-Pop k Semantics U-Pop k Algorithm Experiments Conclusion. Background.

514 views • 38 slides

Managing Uncertain Data

Managing Uncertain Data. Anish Das Sarma Stanford University. What is Uncertain Data?. Why Does It Arise?. Precision of devices. Lack of information. Uncertainty about the future. Anonymization. Applications: Information Extraction. Applications: Information Integration. name, hPhone,

833 views • 68 slides

Probabilistic Reasoning with Uncertain Data

Probabilistic Reasoning with Uncertain Data. Yun Peng and Zhongli Ding, Rong Pan, Shenyong Zhang. Uncertain Evidences. Causes for uncertainty of evidence Observation error Unable to observe the precise state the world is in Two types of uncertain evidences

278 views • 15 slides

Probabilistic Reasoning with Uncertain Data

168 views • 15 slides

Cleaning Uncertain Data with Quality Guarantees

530 views • 51 slides

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