'Answering queries' diaporamas de présentation

CHAPTER 3: DESCRIBING DATA SOURCES

CHAPTER 3: DESCRIBING DATA SOURCES. PRINCIPLES OF DATA INTEGRATION. ANHAI DOAN ALON HALEVY ZACHARY IVES. Motivation and Outline. Descriptions of data sources enable the data integration system to: Determine which sources are relevant to a query Access the sources appropriately

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From Data Integration To Semantic Mediation: Addressing Heterogeneities in Data

579 views • 45 slides

CSE 636 Data Integration

CSE 636 Data Integration. Data Integration Approaches. Fall 2006. Virtual Integration Architecture. Leave the data in the sources When a query comes in: Determine the relevant sources to the query Break down the query into sub-queries for the sources

510 views • 35 slides

Coordinating Peer-to-Peer information sources

Coordinating Peer-to-Peer information sources. Fausto Giunchiglia, University of Trento. The talk. Intuitions The underlying theory: The Local Relational Model (an application of the Local Models Semantics [Ghidini and Giunchiglia, AIJ 2001]) Some theoretical results

407 views • 34 slides

Minimizing View Sets without Losing Query-Answering Power

Minimizing View Sets without Losing Query-Answering Power. Chen Li Stanford University joint work with Mayank Bawa and Jeff Ullman. A web-caching scenario. user query. Client. cache. source query. answer. Server. Client. Cached query results: Q1(T,A,Pr) :- book(T,A,Pub,Pr)

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A Quick Introduction to Approximate Query Processing

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Wavelet Trees

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CSCI 121 Special Topics: Bayesian Networks Lecture #2: Bayes Nets

CSCI 121 Special Topics: Bayesian Networks Lecture #2: Bayes Nets. P(B=F) P(B=T) .999 .001 . P(E=F) P(E=T) .998 .002 . Earthquake. Burglary. B E P(A=F) P(A=T) F F .999 .001 T F .06 .94 F T .71 .29 T T .05 .95. Alarm.

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Promoting and marketing

You should not devote far more than 15-20 minutes speaking to applicants. It truly is sufficient time for equally of you to size up one another and choose regardless of whether it is possible to function with each other or not. The remainder of the conversing can be done by members within your group. They are able to instruct quite possibly the most significant tips to your new member even though it is possible to deal with a lot more essential problems.

14 views • 1 slides