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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am going to explain data protection‚ talk about the data protection acts‚ rights and principles. I’m going to talk about a data controller and a data processor and what their responsibilities are. What personal and sensitive data are. What a data receiver is and what his rights are‚ what is involved in direct marketing and I will mention an example of abuse or corruption that occurred in Ireland. Data protection acts Data protection is legal control over and access to use of data stored in computers
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an era of big data‚ this data-driven world has the potential to improve the efficiencies of enterprises and improve the quality of our lives; however‚ there are a number of challenges that must be addressed to allow us to exploit the full potential of big data. This paper focuses on challenges faced by online retailers when making use of big data. With the provided examples of online retailers Amazon and eBay‚ this paper addressed the key challenges of big data analytics including data capture and
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having too much data‚ and what to do about them There is rarely an instance of business that you can encounter that does not involve the processing of data on information systems these days. Businesses and organizations use information systems in a majority of their functions‚ and as a result‚ are creating mass amounts of data. Because data is so crucial to business operations‚ it is being gathered‚ stored‚ and utilized in exponential amounts compared to the previous decade. These data stores can
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READING QUESTIONS DAY ANSWERS 1. Which of the following reading components do you find the easiest and the most difficult? Vocabulary Sentence/Syntax Getting the main idea Comprehension Others:_______________ Easiest: _____________ Difficult: _______________ EASIEST COMPONENTS: Vocabulary - 3 Sentence/Syntax - 11 Getting the main idea - 16 Comprehension - 1 DIFFICULT COMPONENTS: Vocabulary - 5 Sentence/Syntax - 9 Getting the main idea - 5 Comprehension – 11 2. Why do you
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Data Models Consider a simple student registration. Specifically we want to support the tasks of students registering for or withdrawing from a class. To do this‚ the system will need to record data about what entities? What specific data about the entities will need to be stored? What is the cardinality between students and courses? Diagram the data model. While‚ considering a student class registration system for registering or withdrawing a system must have the capability to record data in
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LECTURE 1 DATA TYPES Our interactions (inputs and outputs) of a program are treated in many languages as a stream of bytes. These bytes represent data that can be interpreted as representing values that we understand. Additionally‚ within a program we process this data that can be interpreted as representing values that we understand. Additionally‚ within a program we process this data in various way such as adding them up or sorting them. This data comes in different forms. Examples include: your
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PSY202 - Developmental Psychology Session 1 2012 Faculty of Arts School of Psychology Bathurst Campus Distance Mode Subject Coordinator Justin Harrison Subject Overview Welcome to a new session of study at Charles Sturt University. This subject examines human development across the entire life-span. Descriptions‚ explanations‚ and predictions of developmental stages and changes are covered through an investigation of major theories and research findings. Practical implications and applications
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Wilson Lai Mrs.Bagnell Per.3 English II 4/29/15 Euthanasia (Mercy Killing) – Research outline I Intro A. Euthanasia (Euthanasia) refers to the medics of patients stopping treatment or the use of drugs and allow patients to die without pain."Euthanasia" term originated from Greece‚ meaning "happiness" to death. It consists of two layers of meaning‚ an easy painless death; Second‚ painless death.(Fa li) 1. Euthanasia is also named mercy killing. It is the act of putting to death
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Kyasia White Advanced Outline I. Introduction II. Summaries of both The Palette of Narmer and Stele of Naram- Sin III. Compare similarities of the two IV. Compare differences V. Conclusion I. Introduction: a. The Narmer Palette dates from the early Dynastic period and was found in the temple of Horus at Hierakonpolis Employs many representational conventions that would dominate royal Egyptian art from this point on b. Stele of Naram- Sin is from an artist of Mesopotamia. The
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