'Set intersection' diaporamas de présentation

Sets and Set Operations The Number of Elements in a Finite Set The Multiplication Principle

6. Sets and Set Operations The Number of Elements in a Finite Set The Multiplication Principle Permutations and Combinations. Sets and Counting. 6.1. Sets and Set Operations. Set Terminology and Notation. A set is a well-defined collection of objects .

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RELATIONAL ALGEBRA

Lecture 7. RELATIONAL ALGEBRA. Prof. Sin-Min LEE Department of Computer Science. Terminology: table (relation) row (tuple) formally, a relation is a set of ordered n-tuples. Domain : set of data values from which an attribute value can be drawn. Eg. set of department names

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Latent Semantic Indexing (mapping onto a smaller space of latent concepts)

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CS276 Information Retrieval and Web Search Chris Manning, Pandu Nayak and Prabhakar Raghavan

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ITCS 6265 Information Retrieval and Web Mining

ITCS 6265 Information Retrieval and Web Mining. Lecture 10: Web search basics. Brief (non-technical) history. Early keyword-based engines Altavista, Excite, Infoseek, Inktomi, ca. 1995-1997 Sponsored search ranking: Goto.com (morphed into Overture.com ? Yahoo!)

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??? ????? oracle ???????

??? ????? oracle ???????. 3.1 ?????????. 3.2 ????. 3.3 oracle ?????????. ????????????????????? 1970 ??? IBM ???????? Dr.E.F.Codd ?????????????????????????? Dr.E.F.Codd proposed the relational model for database systems in 1970s.

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ELEMENTARY SET THEORY

ELEMENTARY SET THEORY. Sets. A set is a well-defined collection of objects. Each object in a set is called an element or member of the set. The elements or objects of the set are enclosed by a pair of braces { }. Notations.

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SQL Design Patterns

SQL Design Patterns. Advanced SQL programming idioms. Genesis. C++ world Advanced C++ Programming Styles and Idioms, by James O. Coplien Design Patterns: Elements of Reusable Object-Oriented Software by Erich Gamma et al SQL SQL for Smarties by Joe Celko SQL Cookbook by Anthony Molinaro

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Engineering a Set Intersection Algorithm for Information Retrieval

Engineering a Set Intersection Algorithm for Information Retrieval. Alex Lopez-Ortiz UNB / InterNAP. Joint work with Ian Munro and Erik Demaine. Overview. Web Search Engine Basics Algorithms for set operations Theoretical Analysis Experimental Analysis

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Lecture #10

Lecture #10. Sets (2.3.3) Huffman Encoding Trees (2.3.4). Sets. A set is a collection of distinct items. Methods: ( element-of-set? x set) (adjoin-set x set) (union-set s1 s2) (intersection-set s1 s2). Implementation. We will see three ways to implement sets. With lists

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new tools and techniques for practical private set intersection

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Relational Algebra

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Achieving Fairness in Private Contract Negotiation

Achieving Fairness in Private Contract Negotiation. Keith Frikken and Mikhail Atallah Purdue University March 2, 2005. Overview. Introduction/Motivation Related Work Framework Protocols Extensions Summary. Overview. Introduction/Motivation Related Work Framework Protocols

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Module 17

Module 17. Closure Properties of Language class LFSA Remember ideas used in solvable languages unit Set complement Set intersection, union, difference, symmetric difference. LFSA is closed under set complement. If L is in LFSA, then L c is in LFSA Proof

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Document duplication (exact or approximate)

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Privacy Preserving analytics Private Set Intersection(PSI)

Privacy Preserving analytics Private Set Intersection(PSI). Mentor: Vladimir Kolesnikov (Bell Labs) Presenter: Ni Trieu (Oregon State University) Joint work with Ranjit Kumaresan & Mike Rosulek Supported by Office of Naval Research. PSI APP: Contact discovery. PSI APP: Online Advertising.

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Sets Day 2

Warning : All the Venn Diagram construction and pictures will be done during class and are not included in this presentation. If you missed class you should get class notes from another student. Sets Day 2. Venn Diagrams.

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Efficient Private Matching and Set Intersection (EUROCRYPT, 2004)

Efficient Private Matching and Set Intersection (EUROCRYPT, 2004). Author ? Michael J.Freedman Kobbi Nissim Benny Pinkas. Presentered by Chia Jui Hsu Date ? 2009-02-10. Outline. Introduction Private Matching Scheme Adversary models Security Conclusion

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LING 581: Advanced Computational Linguistics

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One Pass Algorithm Presented By: Pradhyuman raol ID : 114

One Pass Algorithm Presented By: Pradhyuman raol ID : 114. Instructor : Dr T.Y. LIN. Agenda . One Pass algorithm Tuple-at-a-Time Unary Operators Binary Operations. One-Pass Algorithms . One Pass Algorithm: Some methods involve reading the data only once from disk.

203 views • 9 slides