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Best Data Mining Techniques

  • Ayush Singh Rawat
  • Sep 23, 2021
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What is Data Mining?


Data mining is the act of analysing large amounts of data in order to uncover business information that may assist organisations in solving issues, reducing risks, and seizing new possibilities. The parallels between looking for useful information in a huge database and mining for minerals on a mountain inspired the name of this field of data science. Both techniques involve combing through massive volumes of data in order to uncover hidden value.


Data mining is utilised in sales and marketing, product development, healthcare, and education, among other sectors of business and study. When done properly, data mining may provide you a significant competitive edge by allowing you to understand more about your consumers, develop successful marketing strategies, boost revenue, and save expenses.


(Must read: Applications of data mining)



Data mining techniques


  1. Data cleaning and preparation


Cleaning and preparing data is an important step in the data mining process. To be helpful in various analytic approaches, raw data must be cleaned and structured. Different components of data modelling, transformation, data migration, ETL, ELT, data integration, and aggregation are included in data cleaning and preparation. 


It's a vital step in determining the optimal use of data by knowing its basic characteristics and properties.


The importance of data cleansing and preparation for a company is self-evident. Data is either worthless to an organisation or untrustworthy owing to its quality if this initial stage is skipped. 


Companies must be able to trust their data, analytics results, and the actions taken as a result of those results.These procedures are also required for data quality and data governance.


(Related blog: Data mining software)



  1. Tracking patterns 


A key data mining approach is pattern recognition. It entails spotting and tracking trends or patterns in data in order to draw informed conclusions regarding business outcomes. 


When a company notices a pattern in sales data, for example, it has a reason to act. If it's found that a given product sells better than others for a specific demographic, a company may utilise this information to develop comparable items or services, or just better stock the original product for this population. (From)



  1. Classification:


This method is used to extract significant and relevant data and metadata. This data mining approach aids in the classification of data into several categories. Different criteria may be used to categorise data mining approaches, as follows:


  • Based on data sources :


This categorization is based on the type of information that is processed. Multimedia, geographical data, text data, time-series data, the World Wide Web, and so on are examples.


  • Based on database :


This categorization is determined by the data model used. Object-oriented databases, transactional databases, relational databases, and other types of databases are examples.


  • Based on type of knowledge:


This classification is based on the sorts of knowledge that has been discovered or the data mining capabilities. Discrimination, classification, grouping, characterisation, and more terms come to mind. Some frameworks are large, combining a number of data mining functions.


  • Based on data analysis method used :


This categorization is based on the data analysis method used, which might include neural networks, machine learning, genetic algorithms, visualisation, statistics, data warehouse-oriented or database-oriented, and so on.


The amount of user engagement involved in the data mining method can also be considered, such as query-driven systems, autonomous systems, or interactive exploratory systems. (From)

Among many, some data mining techniques are; 1) data cleaning and preparation 2) tracking patterns 3) Classification 4) Clustering 5) Association 6) Anomaly or outlier detection 7) Prediction 8) Long term memory processing (LTM) 9) Decision trees 10) Data visualization

Data mining techniques

  1. Clustering:


Clustering is the grouping of data into groups of related items. The data is described by a few clusters, which sacrifices some details but improves the overall quality. It uses clusters to model data. 


Clustering is historically based in statistics, mathematics, and numerical analysis, as evidenced by data modelling. Clusters are related to hidden patterns in machine learning, the search for clusters is unsupervised learning, and the framework that follows is a data idea.


Clustering is quite useful in data mining applications from a practical standpoint. Scientific data exploration, text mining, information retrieval, geographic database applications, CRM, Web analysis, computational biology, medical diagnostics, and a variety of other applications are just a few examples.


In other words, clustering analysis is a data mining approach for identifying data that is comparable. This approach aids in the recognition of data discrepancies and similarities. Clustering is similar to classification in that it requires grouping data pieces together based on similarities.


(Also read- Clustering methods in Machine learning)



  1. Association


Tracking patterns are connected to association, although dependently linked variables are more specific. You'll be looking for certain occurrences or qualities that are significantly linked with another event or attribute in this situation.


Customer behaviour may be studied and forecasted using association rules. In the retail sector study, it comes highly recommended. This method is employed in the analysis of shopping basket data, product clustering, catalogue design, and retail layout. In the field of information technology, programmers employ association rules to create machine-learning systems.



  1. Anomaly or Outlier detection


In many situations, merely detecting the overall pattern will not provide you with a complete picture of your data. You must also be able to spot abnormalities, sometimes known as outliers, in your data. 


If, for example, your buyers are nearly all male but there's a large surge in female buyers during one unusual week in July, you'll want to study the spike and figure out what caused it so you can either duplicate it or better understand your audience.


These sorts of things are statistically distinct from the rest of the data, implying that something unusual has occurred and that more attention is required. Intrusion detection, system health monitoring, fraud detection, defect detection, event detection in sensor networks, and identifying ecological disruptions are all applications for this method. Analysts frequently eliminate aberrant data from datasets in order to obtain more accurate results.


(Related blog: Data mining tools)



  1. Prediction


Prediction is regarded as an important data mining approach. We all want to know how much our assets will be worth in the future and to be safe while purchasing online. As a result, it's being used to anticipate the future of various forms of data mining. 


Analyzing prior occurrences can aid in making better or less accurate forecasts for the future. You never know if a person will be honest two days from now, but based on their prior credit history, you may assume that if they have been honest so far, they will most likely continue to be honest with the bank in the months ahead. 


Do you recall getting a call from a bank employee asking if you wanted your credit limit increased? Being a trustworthy person, on the other hand, always seems appealing.



  1. Long term memory processing(LTM)


Long-term memory processing is intended to scale data in the memory and give the input in the sequence more weight. By scaling the cell state after attaining the best results, the method prevents overfitting.


The long-term memory network (LTM) is primarily used to recall extended sequences and to avoid the vanishing gradient problem in the learning model. LTM integrates prior outputs and current inputs, generalises old sequences, and places a greater focus on fresh inputs, among other aspects.



  1. Decision trees


Decision trees are a sort of prediction model that allows businesses to harvest data effectively. Although a decision tree is technically a type of machine learning, it is more commonly referred to as a white box machine learning approach due to its simplicity.


Users can easily see how the data inputs impact the outputs using a decision tree. A random forest is a predictive analytics model that is created by combining several decision tree models. 


Complicated random forest models are regarded as "black box" machine learning approaches since their outputs are not always straightforward to comprehend based on their inputs. However, in most situations, this fundamental type of ensemble modelling is more accurate than relying only on decision trees.



  1. Data Visualization


Another essential aspect of data mining is data visualisation. They provide users with access to data based on sensory impressions that may be seen. Today's data visualisations are dynamic, suitable for streaming data in real-time, and distinguished by a variety of colours that indicate various data trends and patterns.


Dashboards are a useful tool for uncovering data mining insights via data visualisations. Instead of relying just on the numerical outputs of statistical models, organisations may create dashboards based on a variety of indicators and utilise visualisations to graphically emphasise trends in data.


(Also read- applications of Data visualization)


To conclude, all of these methods may be used to study data from various viewpoints. You now have the expertise to choose the optimal method for converting data into usable information - information that can be utilised to address a number of business problems, such as increasing revenue, improving customer happiness, or lowering unnecessary costs.

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