What Is KDD Process In Data Mining and Its Steps?


From business transactions to scientific data, sensor data, pictures, videos, and more, we can and are handling a tremendous amount of information and data every day. Thus, we must have a system that will enable us to automatically extract the essence of the information available and generate reports, views, or summaries for better decision-making. 

The KDD process in data mining is used in business in the following ways to make better managerial decisions: 

  • Data summarization by automatic means 
  • Extraction of information from storage. 
  • Analyzing raw data to discover patterns. 

This article will briefly discuss the KDD process in data mining and the KDD process steps. 

What is KDD? 

KDD uses data to find, transform, and refine meaningful patterns to be used in a variety of applications or domains. KDD’s full form in data mining is knowledge discovery in a database. 

KDD is a long and complex process involving many steps and iterations, but the above statement gives a good overview of it. 

In the context of large databases, KDD is mainly concerned with extracting information from data. This is done by identifying knowledge using Data Mining algorithms. 

What is KDD in Data Mining? 

As a method of analyzing data from databases, KDD in data mining involves programming and analytical techniques in order to extract useful and applicable information. KDD relies heavily on data mining knowledge management, which is the foundation of the entire process. 

This algorithm deduces useful patterns from processed data using several algorithmic techniques that are self-learning. Throughout the process, many iterations are necessary as the algorithm and pattern interpretations demand continuous feedback. 

Steps Involved in a Typical KDD Process 

Iterative and interactive, the knowledge discovery in the database, i.e., the KDD process steps, consists of four actions. There are many imaginative aspects in this process in that one cannot present one formula or categorize all possible steps and applications scientifically. Each stage has its requirements and possibilities, so it is necessary to understand the process. 

As part of the KDD process, the objectives are determined and the knowledge discovered is implemented. This is when Active Data Mining starts, and the loop is closed. In the future, the application domain will need to be modified. 

  • Goal-Setting and Application Understanding:  

As the first step in the process, you need to have prior knowledge and understanding of the field or domain you will be applying to in order to move forward. Here, we will decide how we will extract knowledge from the transformed data and the patterns identified through data mining. In my opinion, it is critically important to establish this premise, which, if not done correctly, can result in false interpretations and negative effects on those with whom it is expected. 

  • Data Selection and Integration:  

Once the goals and objectives have been determined, it is necessary to select, sort, and categorize the data collected based on their availability, importance, accessibility, and quality into meaningful sets. In order to conduct data mining effectively, these parameters must be considered because they provide the basis for it and will affect the types of data models that can be constructed. 

  • Data Cleaning and Preprocessing:  

As part of this procedure, the data set is searched for missing data, and low quality, noisy, redundant, or noisy data is removed from it so as to improve the accuracy of the data, as well as the reliability of the data set overall. The search and elimination of unwanted data are performed using certain algorithms, which are developed based on some attributes that are specific to each application. 

  • Data Transformation:  

This step aims to prepare the data so that it can be fed into the data mining algorithms for extraction. Therefore, the data must be presented in an aggregated and consolidated form. Based on functions, attributes, features, and other characteristics of the data, the data is consolidated. 

Why is KDD important? 

The KDD method is designed with the primary purpose of extracting valuable information from large databases in order to analyze them. It employs data mining techniques to identify what is considered knowledge by the system to accomplish this goal. 

As the name suggests, the KDD process in data mining is a method for analyzing significant data sources through exploratory, planned investigations and modeling. 

It is a systematic approach that identifies valid, understandable, and practical patterns in massive but complicated datasets through systematic data analysis. 

The base of the KDD methodology is data mining, which entails the inference of algorithms by analyzing the data, creating a model, and discovering previously unknown patterns based on that model. Data is extracted using the model, and then it is analyzed and forecasted based on the information that has been extracted. 

Is learning KDD difficult? 

In today’s technologically advanced world, KDD is one of the most useful tools available. There is a moderate level of complexity involved in learning KDD. In order to learn KDD, learners must have knowledge of Computer Science, Machine Learning, Statistics, and Data Science. 

There are a number of aspects to this process, including database and data management, pre-processing of data, relevance metrics, design and inference factors, complexity factors, visualization of the data, online updating, and post-processing of discovered structures in addition to the raw data analysis. 


As a result of today’s globalization, a variety of data sources are being used to generate data of a wide range of types and formats, including economic transactions, biometrics, scientific and technical data, as well as images, videos, and pictures. In order to make the most of data that is readily available today, it is imperative to develop a technique that can extract the cream from that information so that reliable, high-quality, and effective data can be made available for use in various fields for decision-making purposes. Exactly here is where KDD can prove to be so useful. 

If you’re interested to learn more about the KDD process in data mining, then it is recommended that you check out the UNext Certificate in Cloud Computing.

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