Introduction to Data Mining: Chapter 1 Lecture Notes
35 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the new mantra for data collection mentioned in the text?

  • Collect data only from social networking sites
  • Collect data only for the intended purpose
  • Collect data without considering its value
  • Collect data from all sources without a purpose (correct)
  • According to the text, what is one of the reasons for the enormous data growth in commercial and scientific databases?

  • Advances in data generation and collection technologies (correct)
  • Decrease in data generation and collection technologies
  • Lack of interest in computational simulations
  • Reduction in cyber security measures
  • What is one of the examples of large-scale data sources given in the text?

  • Sensor Networks (correct)
  • Travel Brochures
  • Personal Diaries
  • Cooking Recipes
  • According to the text, what has become cheaper and more powerful, leading to the need for data mining?

    <p>Computers</p> Signup and view all the answers

    What is a reason mentioned in the text for the competitive pressure leading to the need for data mining?

    <p>Provide better, customized services for an edge</p> Signup and view all the answers

    What does the text suggest about the value of gathered data?

    <p>It will have value either for the purpose collected or for a purpose not envisioned</p> Signup and view all the answers

    What is the main goal of data mining?

    <p>To explore and analyze large quantities of data in order to discover meaningful patterns.</p> Signup and view all the answers

    Which field of study does data mining draw ideas from?

    <p>Machine learning/AI, pattern recognition, statistics, and database systems.</p> Signup and view all the answers

    What are the characteristics of data that make traditional techniques unsuitable for data mining?

    <p>High dimensional, heterogeneous, complex, and distributed.</p> Signup and view all the answers

    What are the two main types of data mining tasks mentioned in the text?

    <p>Description and prediction methods</p> Signup and view all the answers

    What is the significance of fMRI data in the context of data mining?

    <p>It is used in scientific simulations.</p> Signup and view all the answers

    Which of the following is NOT a potential application area for data mining as mentioned in the text?

    <p>Finding alternative/green energy sources</p> Signup and view all the answers

    What kind of data does NASA EOSDIS archives at enormous speeds?

    <p>Earth science data</p> Signup and view all the answers

    What is the primary purpose of using data mining in automated analysis of massive datasets?

    <p>To discover meaningful patterns in the data.</p> Signup and view all the answers

    What are some characteristics of traditional techniques that may make them unsuitable for data mining?

    <p>&quot;Large-scale&quot; and &quot;high dimensional&quot; data</p> Signup and view all the answers

    What do we call the property or characteristic of an object in data mining?

    <p>Feature</p> Signup and view all the answers

    Which term is also used to describe an attribute in data mining?

    <p>Variable</p> Signup and view all the answers

    What are the numbers or symbols assigned to an attribute for a particular object called?

    <p>Attribute values</p> Signup and view all the answers

    Which term describes the collection of attributes that describe an object in data mining?

    <p>Record</p> Signup and view all the answers

    What is another term for the distance or similarity between data objects?

    <p>Measure</p> Signup and view all the answers

    In data mining, which term is used to describe the characteristic of an object, such as eye color of a person or temperature?

    <p>Attribute</p> Signup and view all the answers

    What is another term used for the property or characteristic of an object in the context of data mining?

    <p>Variable</p> Signup and view all the answers

    Which term is used to describe the numbers or symbols assigned to an attribute for a particular object in data mining?

    <p>Attribute values</p> Signup and view all the answers

    What is the term used in data mining for the collection of attributes that describe an object?

    <p>Record</p> Signup and view all the answers

    What is another term for the distance or similarity between data objects in data mining?

    <p>Measure</p> Signup and view all the answers

    Which type of attribute values only distinguish and do not possess the property of order?

    <p>Nominal</p> Signup and view all the answers

    What type of attribute values also order objects in addition to distinguishing them?

    <p>Ordinal</p> Signup and view all the answers

    Which type of attribute values have meaningful differences between them but do not have meaningful ratios?

    <p>Interval</p> Signup and view all the answers

    Is it physically meaningful to say that a temperature of 10 ° is twice that of 5° on the Celsius scale?

    <p>No, it is not physically meaningful.</p> Signup and view all the answers

    In the context of measuring height above average, is it analogous to the situation of temperature in terms of meaningful ratios?

    <p>No, it is not analogous.</p> Signup and view all the answers

    What are the examples of quantitative attributes mentioned in the text?

    <p>{calendar dates, temperature in Celsius or Fahrenheit}</p> Signup and view all the answers

    Which type of attribute values have both meaningful differences and ratios?

    <p>Ratio</p> Signup and view all the answers

    What operations are meaningful for ratio variables?

    <p>*, /</p> Signup and view all the answers

    What is the main difference between interval and ratio attributes in terms of meaningful ratios?

    <p>Ratio attributes have meaningful ratios while interval attributes do not.</p> Signup and view all the answers

    (BONUS) What are common examples of nominal attribute values mentioned in the text?

    <p>{zip codes, employee ID numbers}</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser