Introduction CS/SE 4X03 Ned Nedialkov McMaster University January 13, 2021 Outline Taylor series Errors in computing Mean-value theorem The Patriot disaster Taylor series Errors in computing Mean-value theorem The Patriot disaster Taylor series Taylor series of an infinitely differentiable (real or complex) f at c f (x) = f (c) + f ′ (c)(x − […]
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NUMERICAL MATHEMATICS AND COMPUTING Copyright 2012 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience.
Chapter 4 Some Elementary Statistical Inference 4.5 Introduction to Hypothesis Testing 1/50 Boxiang Wang Chapter 4 STAT 4101 Spring 2021 Motivating example Suppose you are suspecting that the students in Boxiang’s STAT 4101 sleep fewer than 6 hours on the average each day. To support your hypothesis, you randomly find 20 students, and you find
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2021/4/28 Signature-based Indexing Signature-based Indexing Indexing with Signatures Signatures Generating Codewords Superimposed Codewords (SIMC) Concatenated Codewords (CATC) Queries using Signatures False Matches SIMC vs CATC >> COMP9315 21T1 ♢ Signature-based Indexing ♢ [0/12] https://cgi.cse.unsw.edu.au/~cs9315/21T1/lectures/signatures/slides.html 1/14 2021/4/28 Signature-based Indexing ❖ Indexing with Signatures Signature-based indexing: designedforpmrqueries (conjunctionof equalities) does not try to achieve better than O(n)
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COMP9315 21T1 – Exercises 06 COMP9315 21T1 Exercises 06 Implementing Selection on Multiple Attributes (N-d) DBMS Implementation [Show with no answers] [Show with all answers] Consider a file of n=50000 tuples allocated across b=1024 pages using a multi-attribute hash function giving d=10 hash bits. The tuples in this file have four fields R(w,x,y,z) and
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2021/4/28 CATC Indexing CATC Indexing Signature-based indexing Concatenated Codewords (CATC) CATC Example CATC Queries Example SIMC Query CATC Parameters Query Cost for CATC Variations on CATC Comparison with SIMC >> COMP9315 21T1 ♢ CATC Indexing ♢ [0/12] https://cgi.cse.unsw.edu.au/~cs9315/21T1/lectures/sig-catc/slides.html 1/14 2021/4/28 CATC Indexing ∧ >> ❖ Signature-based indexing Reminder: le organisation for signature indexing (two les)
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2021/4/28 SIMC Indexing SIMC Indexing Signature-based indexing Superimposed Codewords (SIMC) SIMC Example SIMC Queries Example SIMC Query SIMC Parameters Query Cost for SIMC Page-level SIMC Bit-sliced SIMC Comparison of Approaches Signature-based Indexing in PostgreSQL >> COMP9315 21T1 ♢ SIMC Indexing ♢ [0/16] https://cgi.cse.unsw.edu.au/~cs9315/21T1/lectures/sig-simc/slides.html 1/18 2021/4/28 SIMC Indexing ∧ >> ❖ Signature-based indexing Reminder: le organisation
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2021/4/28 Multi-dimensional Hashing Multi-dimensional Hashing Hashing and pmr MA.Hashing Example MA.Hashing Hash Functions Queries with MA.Hashing MA.Hashing Query Algorithm Query Cost for MA.Hashing Optimising MA.Hashing Cost >> COMP9315 21T1 ♢ Multi-d Hashing ♢ [0/14] https://cgi.cse.unsw.edu.au/~cs9315/21T1/lectures/nd-hashing/slides.html 1/16 2021/4/28 Multi-dimensional Hashing ❖ Hashing and pmr For a pmr query like select * from R where a1 =
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Tutorial 4 – Problems COMP3121/9101 1. You are traveling by a canoe down a river and there are n trading posts along the way. Before starting your journey, you are given for each 1 ≤ i < j ≤ n the fee F(i,j) for renting a canoe from post i to post j. These fees
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University of Toronto, Department of Computer Science CSC 485H/2501H: Computational linguistics, Fall 2022 Assignment 1 Due date: 23:59 on Friday, October 7, 2022. Copyright By PowCoder代写 加微信 powcoder Late assignments will not be accepted without a valid medical certificate or other documentation of an emergency. This assignment is worth 33% (CSC 485) or 25% (CSC
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