IT433 Data Warehousing and Data Mining — Data Preprocessing — 1 Data Preprocessing • Why preprocess the data? • Descriptive data summarization • Data cleaning • Data integration and transformation • Data reduction • Discretization and concept hierarchy generation • Summary 2 Why Data Preprocessing? • Data in the real world is dirty – incomplete: lacking attribute values‚ lacking certain attributes of interest‚ or containing only aggregate data • e.g.‚ occupation=“ ”
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\ Part One: REVIEW from readings Describe the Silent Generation. What social‚ economic‚ and political issues affected this generation? The Silent Generation is a generation of people born in the United States between roughly 1923 and the early 1940s.Tthis generation people are also known as the traditionalist. This generation has largest lobbyist group and many are the members of AARP (American Association of Retired Person) meaning majority of people of this generation are retirees. Silents
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Introduction Data communications (Datacom) is the engineering discipline concerned with communication between the computers. It is defined as a subset of telecommunication involving the transmission of data to and from computers and components of computer systems. More specifically data communication is transmitted via mediums such as wires‚ coaxial cables‚ fiber optics‚ or radiated electromagnetic waves such as broadcast radio‚ infrared light‚ microwaves‚ and satellites. Data Communications =
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DATA COLLECTION Business Statistics Math 122a DLSU-D Source: Elementary Statistics (Reyes‚ Saren) Methods of Data Collection 1. 2. 3. 4. 5. DIRECT or INTERVIEW METHOD INDIRECT or QUESTIONNAIRE METHOD REGISTRATION METHOD OBSERVATION METHOD EXPERIMENT METHOD DIRECT or INTERVIEW Use at least two (2) persons – an INTERVIEWER & an INTERVIEWEE/S – exchanging information. Gives us precise & consistent information because clarifications can be made. Questions not fully understood by the respondent
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The New Game in Asia Sheikh Rahman Senior Advisor November 5‚ 2012 ------------------------------------------------- In determining the course of Bangladesh’s foreign relations – the words of a famous Prussian /German statesman of the nineteenth century and renowned figure in world affairs Otto von Bismark may be appropriate - “if you have five neighbors‚ you need to be on good terms with at least three”. China and India are the two powerful nations in the region that
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management and bureaucracy. Contributions to organisational theory at the start of twentieth century were focused on identifying principles which‚ if utilized‚ ensure success. The aim was that these simple laws would represent the single best way for managing and organizing. Most modern companies still incorporate a few ideas from the early works on organizational theory. Classical organizational and management theorists pointed that the principles could be applied to any organization no matter the size
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MANAGEMENT AND FORECASTING CHAPTER 1 JF607 MANUFACTURING PROCESS MANAGEMENT 1.1 Describe management in manufacturing 1.1.1 Define the term of management 1.1.2 Describe the basic functions of management a. Planning b. Organizing c. Staffing d. Directing e. Controlling MANUFACTURING PROCESS MANAGEMENT 1.2 Explain organization and planning 1.2.1 Define the basic principle of an organization and terms of organization a. Authority b. Duties c. Responsibility d. Accountability
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Professor Faleh Alshamari Submitted by: Wajeha Sultan Final Project Hashing: Open and Closed Hashing Definition: Hashing index is used to retrieve data. We can find‚ insert and delete data by using the hashing index and the idea is to map keys of a given file. A hash means a 1 to 1 relationship between data. This is a common data type in languages. A hash algorithm is a way to take an input and always have the same output‚ otherwise known as a 1 to 1 function. An ideal hash function is
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doctor has charted Dexter’s mass and related it to his BMI (Body Mass Index). A BMI between 20 and 26 is considered healthy. The data is shown in the following table. Mass(kg)62 72 66 79 85 82 92 88 BMI 19 22 20 24 26 25 28 27 (a) Create a scatter plot for the data. (b) Describe any trends in the data. Explain. (c) Construct a median–median line for the data. Write a question that requires the median– median line to make a prediction. (d) Determine the equation of the median–median line
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any browser and on Windows platform. CHAPTER 2 SYSTEM ANALYSIS 2.1 INTRODUCTION Systems analysis is a process of collecting factual data‚ understand the processes involved‚ identifying problems and recommending feasible suggestions for improving the system functioning. This involves studying the business processes‚ gathering operational data‚ understand the information flow‚ finding out bottlenecks and evolving solutions for overcoming the weaknesses of the system so as to achieve the
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