+1-415-315-9853

info@mywordsolution.com

## Programming

 C/C++ Java DOT NET Python Assembly C Sharp Perl COBOL Visual Basic CAD/CAM Object Oriented Programming Asp.NET PHP JSP Shell Scripting Java Script Ajax CSS/HTML Joomla Wordpress Megento Photoshop DBMS PL-SQL Oracle MS-SQL MS-ACCESS My-SQL SYBASE FOXPRO Excel Programming Language Mobile Applications

Home >> DBMS

problem 1: Consider the following frequency counts of some item sets in a transaction database r:

freq({A}, r) = 0.405
freq({B}, r) = 0.510
freq({C}, r) = 0.303
freq({A,B}, r) = 0.380
freq({A,C}, r) = 0.256
freq({B,C}, r) = 0.197
freq({A,B,C}, r) = 0.095

Based on this information, you can use them to compute the following probabilities. (ex: P(X) = freq(X, r)).

a) What is the joint probability P(A and B)? What is P(A) ? P(B)?

b) What are the confidence and  lift ratio of the association rules generated from the following itemsets: {A, B, C} and {A‾, B}?

c) Compare the results of a) and b) with  the frequencies  freq({A}, r) and freq({B}, r). What observations can you made about the relationship of A and B in terms of independence and possible causal relationship? Please describe your answer.

problem 2: Your friend owns a computer store in Yuen Long, selling Desktop and Notebook PCs and other computer peripherals. Having been instead successful with his business there, he decided to venture to the infamous Mongkok Computer Center and has already been there for three months. As expected, compared to his Yuen Long store, his new store has been recording much larger revenue however when it comes to profit, he is not so sure. He requires to pay some times more in rent! In order to stimulate sales, your friend feels that he requires to understand his customers in Mongkok more. To help him do so, you have asked for a sample of the transactional data he collected and they are shown in table below.

a) Set the Minimum Support to 18% and Minimum Confidence to 80%, find all frequent  large  itemsets  (for product items)  and all interesting rules using the Apriori algorithm.

b) By setting the Lift Ratio to 2, which rules you discovered  in Part (a) are still interesting?

c) How many possible association rules (even though both the support and confidence are 0) would be generated from the following itemsets: {Case, Desktop, Maintenance,  Mouse, Speaker, Webcam} and {Computer, Printer, Peripherals, Notebook_PC}.  Compare the results, what you can conclude?

problem 3: You are working for the ABC Telecom and are given some customer records for data mining. You are asked to discover, from the data, patterns that characterize low-, medium- and high-usage customers. He would like to make sure that newly recruited salespersons be able to recommend the right service plans (500-free-mins (low-usage), 2500-free-mins  (medium-usage), and 5000-free-mins  (high-usage)) to the right customers.

a) Show how you can make use of the ID3 algorithm to discover in a sample of customer records (shown in Table below) what best  plan to make to which kind of customers.

b) You are given a testing data set (shown in Table above) as follows, how much should you trust the recommendations made according to the rules discovered by ID3 algorithm?

c) Use the Naïve Bayesian Approach to check the recommendations against the testing data set. How many recommendation(s) is/are trustful?

d) Given a choice between the  Naïve  Bayesian Approach  and the  ID3 algorithm for this task, which one would you choose? Why?

DBMS, Programming

• Category:- DBMS
• Reference No.:- M91845

Have any Question?

## Related Questions in DBMS

### Assignment database modeling and normalizationimagine that

Assignment: Database Modeling and Normalization Imagine that you work for a consulting firm that offers information technology and database services. Part of its core services is to optimize and offer streamline solution ...

### Moving average forecasting modelsmoving average forecasting

Moving Average Forecasting Models Moving average forecasting models are powerful tools that help managers in making educated forecasting decisions. A moving average is mainly used to forecast short historical range data. ...

### Database systems assignment - student enrolment database a

Database Systems Assignment - Student Enrolment Database A. Task Description 1. Overview Your task is to create and test a database in MySQL using PhpMyAdmin. You are provided with a scenario and supporting documents, de ...

### Here is two assignment one is only summery of project from

Here is two assignment one is only summery of project from first assignment, in powerpoint. pleasedont copy and paste, it will be verified by software for plagiarism. please cite all sources by APA format. due date is 26 ...

### Lab assignment working with additional database objectslab

Lab Assignment: Working with Additional Database Objects LAB OVERVIEW Scenario and Summary There is a lot more to a database than just tables and the data in them. A very important part of database security has to do wit ...

### Benefits of data protection controlsbased on what you have

Benefits of Data Protection Controls Based on what you have learned about data protection in an online environment, prepare a 5-slide presentation to a department head or the CEO of a company to convince the audience tha ...

### Analytical assignment individual or group of max two

Analytical Assignment (Individual or Group of Max two students) What is Research article? Review articles provides summary of current state of the research on a particular topic. Ideally, the writer searches for everythi ...

### Hotel reservationsproject descriptionthe main portion of

Hotel Reservations Project Description: The main portion of the resort is the hotel. The hotel wants to store information about hotel guests, reservations, and rooms. You will design tables, import data from Access and E ...

### Ms access database assignment helpdo the easy way i really

MS ACCESS Database assignment help (DO THE EASY WAY I really just need this asap) (I have the database file ready to email to you. I dont think it let me upload the database file here.) Create a simple excel spreadsheet ...

### Objective this is an individual assignment aimed to give

Objective: This is an individual assignment aimed to give the student exposure to the concepts relating to database systems and optimal strategies for efficient management of databases Learning Outcomes assessed: 1. Crea ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

### Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen