Machine Learning: Gathering Data
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Questions and Answers

What is the primary objective of the Gathering Data step in the machine learning life cycle?

  • To explore and find correlations in the data
  • To clean and convert raw data into a useable format
  • To prepare the data for training
  • To identify and obtain all data-related problems (correct)
  • What is the result of performing the Gathering Data step?

  • A coherent set of data (correct)
  • A filtered dataset
  • A dataset with missing values
  • A clean and useable dataset
  • What is the purpose of Data Preparation?

  • To identify data sources
  • To explore and understand the nature of the data (correct)
  • To convert raw data into a useable format
  • To find correlations and trends in the data
  • What is the primary goal of Data Wrangling?

    <p>To clean and convert raw data into a useable format</p> Signup and view all the answers

    What is a common issue with collected data in real-world applications?

    <p>All of the above</p> Signup and view all the answers

    What is the importance of the quantity of collected data?

    <p>It determines the prediction accuracy</p> Signup and view all the answers

    What is the primary objective of training a model in machine learning?

    <p>To enable the model to understand patterns and rules</p> Signup and view all the answers

    Which of the following steps involves evaluating the model's performance?

    <p>Testing the model</p> Signup and view all the answers

    What is the final step in the machine learning life cycle?

    <p>Deploying the model</p> Signup and view all the answers

    What type of algorithms are used in training a model?

    <p>Various machine learning algorithms</p> Signup and view all the answers

    What is the purpose of data analysis in machine learning?

    <p>To select a machine learning technique</p> Signup and view all the answers

    Study Notes

    Machine Learning Life Cycle

    • The machine learning life cycle consists of 7 steps: Gathering Data, Data Preparation, Data Wrangling, Data Analysis, Train Model, Test Model, and Deployment.

    Gathering Data

    • The first step of the machine learning life cycle, aiming to identify and obtain all data-related problems.
    • Data can be collected from various sources such as files, databases, the internet, or mobile devices.
    • The quantity and quality of the collected data will determine the efficiency of the output.

    Data Preparation

    • Exploring, organizing, and preparing the data for use in machine learning training.
    • Understanding the nature of data, including characteristics, format, and quality.
    • Identifying correlations, general trends, and outliers.

    Data Wrangling (Cleaning)

    • The process of cleaning and converting raw data into a usable format.
    • Common issues with collected data include missing values, duplicates, invalid data, and noise.
    • Various filtering techniques are used to clean the data.

    Data Analysis

    • Using cleaned and prepared data to select a machine learning technique (model) such as Classification, Regression, Cluster analysis, or Association.
    • Building and evaluating the model using the prepared data.
    • Reviewing the results of the model.

    Train Model

    • Training the model to improve its performance using various machine learning algorithms.
    • The model is trained on datasets to understand patterns, rules, and features.

    Test Model

    • Testing the model to check for accuracy by providing a test dataset.
    • Determining the percentage accuracy of the model as per the project or problem requirement.

    Deployment

    • The final step of the machine learning life cycle, where the model is deployed in a real-world system.

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    Description

    Learn about the first step of the machine learning lifecycle, where the goal is to identify and obtain all data-related problems. Understand the importance of data sources and quality for efficient output.

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