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Suppose our stream consists of baskets of items, as in the market-basket model of Section 22.1.1. Since we assume elements of streams are tuples, the contents of a basket must be represented by several consecutive tuples with the schema B askets (b ask et, item ). Write the following queries:
a) Find those items that have appeared in at least 1% of the baskets that arrived over the past hour.3
b) Find those pairs of items that have appeared in at least twice as many baskets in the previous half hour as in the half hour before that.
c) Find the most frequent pair(s) of items over the past hour.
Suppose the input is 3. What is the value of beta after the following C++ code executes?
What kind of trend model should be used in each of the following cases?a) The variable is increasing by a constant rate.b) The variable is increasing by a constant rate until it reaches saturation and levels out.c) The variable is increasing by a con..
Compare the performance of these compiled functions
Write down a 200 word paper which explains the distinctions of data and information and in short describe the process a computer uses to convert data into information.
Demonstrate the correct working of your classes by reading in a collection of student records from a file, sort the records, and print them. If a name is "EOF" it will mark the end of the file.
Read the research study "The performance of female entrepreneurs: Credit, Training and the Moderating Effect of Attitude towards Risk-Taking," which is required reading for this module.
Describe the Capability Maturity Mode. At what level is it appropriate to introduce CASE environments and why ?
Following the example of the Circle class in Section 9.2, design a class named Rectangle to represent a rectangle. The class contains:
Calculate the interest earned in 1 year given starting account balance B and annual interest rate I and supposing simple interst, that is no compounding.
When a senior product inspector at Plush Packet Inc. (PPI) inspected a shipment of Router the Raccoon plush toys she discovered that, on average, 15 of the 50 toys in every box had defective seams, and in many of the defective toys, the seams w..
Assignment uses a grading rubric. Instructors will be using the rubric to grade the assignment; therefore, students should review the rubric prior to beginning the assignment to become familiar with the assignment criteria and expectations for succes..
Definite versus Indefinite Loops. Describe a scenario when it would be advantageous for you to use a definite loop as opposed to an indefinite loop when developing a program. Provide a rationale for your response.
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