Question: hierarchal Conception And A More General Conception Of What?
- 1 What is the concept of hierarchy?
- 2 What are the types of concept hierarchy?
- 3 What are the types of concept hierarchy in data mining?
- 4 What are concept hierarchies in context of data mining?
- 5 What is concept hierarchy with example?
- 6 What are some examples of hierarchy?
- 7 What is the purpose of concept hierarchy?
- 8 What is the difference between a concept and a prototype?
- 9 Can you generate a concept hierarchy for categorical attributes?
- 10 Why is binning used?
- 11 Is an essential process where intelligent methods are applied to extract data pattern?
- 12 What is OLAP operations?
- 13 What is data discretization give an example?
- 14 What is correlation in data mining?
- 15 Why do we need data preprocessing?
What is the concept of hierarchy?
Hierarchy describes a system that organizes or ranks things, often according to power or importance. Also known as a pecking order or power structure, a hierarchy is a formalized or simply implied understanding of who’s on top or what’s most important.
What are the types of concept hierarchy?
Types of concept hierarchy In binning, first sort data and partition into (equi-depth) bins then one can smooth by bin means, smooth by bin median, smooth by bin boundaries, etc.
What are the types of concept hierarchy in data mining?
Concept description, which characterizes a collection of data and compares it with others in a concise and succinct manner, is an essential task in data mining. Concept description can be presented in many forms, including generalized relation, cross-tabulation (or briefly, crosstab), chart, graph, etc.
What are concept hierarchies in context of data mining?
etc. As one of the useful background knowledge, concept hierarchies organize data or concepts in hierarchical forms or in certain partial order, which are used for expressing knowledge in concise, high-level terms, and facilitating mining knowledge at multiple levels of abstraction.
What is concept hierarchy with example?
A concept hierarchy defines a sequence of mappings from a set of low-level concepts to higher-level, more general concepts. For example, Vancouver can be mapped to British Columbia, and Chicago to Illinois.
What are some examples of hierarchy?
An example of hierarchy is the corporate ladder. An example of hierarchy is the various levels of priests in the Catholic church. A structure that has a predetermined ordering from high to low. For example, all files and folders on the hard disk are organized in a hierarchy (see Win Folder organization).
What is the purpose of concept hierarchy?
Concept hierarchies can be used to reduce the data by collecting and replacing low-level concepts with higher-level concepts. In the multidimensional model, data are organized into multiple dimensions, and each dimension contains multiple levels of abstraction defined by concept hierarchies.
What is the difference between a concept and a prototype?
A proof of concept shows if a product, feature or system can be developed, whilst a prototype shows how it will be developed. For example, a proof of concept might be used to test a technical feature of an online service by quickly building a working model.
Can you generate a concept hierarchy for categorical attributes?
Introduction: Categorical data are discrete data. Categorical attributes have a finite (but possibly large) number of distinct values, with no ordering among the values. A user or expert can easily define a concept hierarchy by specifying a partial or total ordering of the attributes at the schema level.
Why is binning used?
Binning, also called discretization, is a technique for reducing the cardinality of continuous and discrete data. Binning groups related values together in bins to reduce the number of distinct values.
Is an essential process where intelligent methods are applied to extract data pattern?
Data mining It is an essential process where intelligent methods are applied to extract data patterns. Methods can be summarization, classification, regression, association, or clustering.
What is OLAP operations?
OLAP stands for Online Analytical Processing Server. It is a software technology that allows users to analyze information from multiple database systems at the same time. It is based on multidimensional data model and allows the user to query on multi-dimensional data (eg. Delhi -> 2018 -> Sales data).
What is data discretization give an example?
Data discretization refers to a method of converting a huge number of data values into smaller ones so that the evaluation and management of data become easy. Another example is analytics, where we gather the static data of website visitors.
What is correlation in data mining?
Correlation Analysis – It is used to study the closeness of the relationship between two or more variables i.e. the degree to which the variables are associated with each other. Suppose in a manufacturing firm, they want the relation between – Demand & supply of commodities.
Why do we need data preprocessing?
Data preprocessing is crucial in any data mining process as they directly impact success rate of the project. Data is said to be unclean if it is missing attribute, attribute values, contain noise or outliers and duplicate or wrong data. Presence of any of these will degrade quality of the results.