21 Questions
What is the main purpose of a decision tree in the context of classification and regression tasks?
To predict the class or value of a target variable based on input features
In the given car insurance applicants example, what is the class being predicted?
Risk
What is the main difference between decision trees and clustering?
Decision trees predict the class or value of a target variable, while clustering groups similar objects into classes
What is the primary goal of clustering?
To group similar objects into classes or clusters
In which scenario would clustering be most useful?
Identifying areas of similar land use
What type of learning technique does not require a labeled dataset?
Unsupervised learning
What is the primary purpose of a transaction process system (TPS)?
To collect, modify, and retrieve business transactions on demand
Which type of information system is primarily used by few sophisticated users for strategic decision making?
Executive Support Systems (ESS)
What is the main function of a data warehousing system?
To store and manage large volumes of historical data
Which database technology marked the evolution from file processing systems to more advanced data models in the 70s?
Relational DBMS
In which decade did data warehousing and data mining technologies emerge?
90s
What is the primary purpose of a decision support system (DSS) within an organization?
To provide analytical tools for decision making
What type of processing system executes simple read/update operations on traditional databases to maximize transaction throughput?
Transaction processing systems
What is the activity described as OLAP (On-Line Analytical Processing) mainly used for?
Reporting based on (multidimensional) data analysis
Which technology enables multi-dimensional analysis of business data?
OLAP (On-Line Analytical Processing)
What is the primary goal of Data Mining (or Knowledge Discovery in Data - KDD)?
Discovery of novel, implicit patterns from large data sets
Which type of system supports planning, controlling, and semi-structured decision making at management level by providing reports and analyses of current and historical data?
Management level systems
What is the distinct characteristic of a Data Warehouse?
Subject oriented view
What is the primary purpose of OLTP (On-Line Transaction Processing)?
Perform and record the daily transactions necessary to the conduct of the business
What is the process of uncovering patterns and other valuable information from large data sets known as?
Data Mining
What kind of systems provide digital support for managing documents, user cooperation and communication, storing and retrieving information, and automation of business procedures?
Knowledge level systems
Explore the concept of decision trees, a non-parametric supervised learning algorithm used for classification and regression tasks. Understand the hierarchical tree structure, root node, branches, internal nodes, and leaf nodes through practical examples such as car insurance applicant classification.
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