Hw4 - Study guides, Class notes & Summaries

Question 1 (20 points) 1.1) (6 points) Block Nested Loops Join (A) Reads = |R| + |S| * ceil(|R|/(B-2)) = 5,000 + 15,000 * ceil(5,000/(800-2)) = 110,000 (B) Writes = 0 (no writes are required for nested loops joins) 1.2) (7 points) Grace Hash Join (A) Reads in Partition phase = |R| + |S| = 20,000 Reads in Probe phase = |R| + |S| = 20,000 Total reads = 2 * (|R| + |S|) = 40,000 (B) Total writes = |R| + |S| = 20,000 1.3) (7 points) BNJ = 110,000 * 1 [reads; no writes] = 110,000 GHJ = 40...

Question 1 (20 points) 2.1) (4 points) B - 1 buckets 2.2) (4 points) Recursively apply hash-based projection technique to further split the buckets with different hash functions until no more partition overflow. 2.3) (4 points) (B - 1)^2 buckets 2.4) (4 points) Accelerate the record matching in memory or reduce CPU cost of record matching. 2.5) (4 points) No. In the probing phase, using the same hash function will assign each data record into the same bucket. No speeding up for join in th...

ISyE7406 – HOMEWORK 4 Spring 2023 1. Introduction In this homework, we will examine how various local smoothing methods estimate the “Mexican hat function” at various points in the interval [-2π, 2π]. Using these methods, we will be able to better understand how bias, variance, and mean square error of these estimators perform given different spans, bandwidths, and local smoothing parameters. 2. Exploratory Data Analysis The Mexican hat function is defined in the range [-2π, 2π...

HW4 GNSS Exam Questions & Answers 2024

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6414 HW4 Peer Solutions

ISyE7406 – HOMEWORK 4 Spring 2023 1. Introduction In this homework, we will examine how various local smoothing methods estimate the “Mexican hat function” at various points in the interval [-2π, 2π]. Using these methods, we will be able to better understand how bias, variance, and mean square error of these estimators perform given different spans, bandwidths, and local smoothing parameters. 2. Exploratory Data Analysis The Mexican hat function is defined in the range [-2π, 2π...

PHY 102 (Atoms to Galaxies), HW4, Bergfield (ISU)

EECS 484 F19 - Homework 4 Deadline -- 6:00 PM on Tuesday, Nov 26th, 2019 Deliverables: You need to submit all your solutions in a single PDF on Gradescope. Your solutions can be either handwritten or created electronically, as long as they are clear. This homework is to be done in teams of 2 students; individual work is permitted, but not recommended. Both members of each team will receive the same score; as such, it is not necessary for each team member to submit the assignment. Create ...