Found 413 Articles for Data Mining

What is the use of data mining in business sectors?

Ginni
Updated on 15-Feb-2022 06:47:36

208 Views

Data mining also defined as Knowledge Discovery in Data is a technique to recognize any anomalies, correlations, trends, or patterns between millions of data (especially structured data) to glean insights that can be useful for business decision making and might have been missed during traditional analysis. The objective of data mining is to find facts or data that was previously ignored or not known using complicated numerical algorithms.Data Mining is similar to Data Science. It is carried out by a person, in a particular situation, on a specific data set, with an objective. This phase contains several types of services ... Read More

What is a Distance Function?

Ginni
Updated on 15-Feb-2022 06:46:37

540 Views

Distance is the method the MBR computes similarity. For some true distance metric, the distance from point A to point B, indicated by d(A, B), has four features which are as follows −Well-defined − The distance among two points is continually defined and is a nonnegative real number, d (A, B) ≥ 0.Identity − The distance from one point to itself is continually zero, so d (A, A) = 0.Commutativity − Direction does not create a difference, therefore the distance from A to B is the similar as the distance from B to A: d(A, B) = d(B, A). This ... Read More

What are the limitations of data mining?

Ginni
Updated on 15-Feb-2022 06:43:27

3K+ Views

Data mining is the process of finding useful new correlations, patterns, and trends by transferring through a high amount of data saved in repositories, using pattern recognition technologies including statistical and mathematical techniques. It is the analysis of factual datasets to discover unsuspected relationships and to summarize the records in novel methods that are both logical and helpful to the data owner.Data mining is an interdisciplinary field, the assemblage of a set of disciplines, such as database systems, statistics, machine learning, visualization, and data science. It is depending on the data mining approach used, techniques from other disciplines may be ... Read More

What are the elements of MBR?

Ginni
Updated on 15-Feb-2022 06:43:48

337 Views

There are various elements of MBR which are as follows −Choosing the Training Set − The training set included 49, 652 news stories, supported by the news retrieval service for this goal. These stories appears from about three months of news and from almost 100 multiple sources.Each story included, on average, 2, 700 words and had eight codes created to it. The training set was not particularly created, therefore the frequency of codes in the training set varied a big deal, mimicking the complete frequency of codes in news stories in general.Choosing the Distance Function − The next phase is ... Read More

What is Evolutionary technologies?

Ginni
Updated on 15-Feb-2022 06:41:53

432 Views

An evolutionary algorithm is evolutionary AI-based computer software that solves issues by employing processes that mimic the behaviors of living things. As such, it needs mechanisms that are generally related to biological evolution, including reproduction, mutation, and recombination.An example of data extraction and transformation tools is the ETL-EXTRACT tool suite from evolutionary technologies. Extraction is the service of extracting information from a source system for additional help in a data warehouse environment. It is the first procedure of the ETL process. After the extraction, this data can be changed and loaded into the data warehouse.The process of data extraction contains ... Read More

What are the applications of Memory Based Reasoning?

Ginni
Updated on 15-Feb-2022 06:40:29

1K+ Views

The human ability to reason from experience based on the ability to identify suitable examples from the prior. A doctor diagnosing infection, a claims analyst flagging fraudulent insurance property, and a mushroom hunter pointing Morels are following a same procedure.Each first recognizes same cases from experience and then uses what their knowledge of those methods to the issues at hand. This is the importance of memory-based reasoning. A database of known data is searched to discover preclassified records same to a new data. These neighbors are used for classification and computation.There are various applications of Memory Based Reasoning which are ... Read More

How Does a Neural Network learn using Back Propagation?

Ginni
Updated on 15-Feb-2022 06:37:19

289 Views

A neural network is a sequence of algorithms that endeavors to identify basic relationships in a set of data through a process that mimics the method the human brain works. In this approach, neural networks represent systems of neurons, such as organic or artificial.Neural Networks are analytic approaches modeled after the (hypothesized) procedure of learning in the cognitive system and the neurological services of the brain and capable of forecasting new observations (on definite variables) from other observations after executing a process of so-called learning from current information.There are the following steps of Back Propagation which are as follows −The ... Read More

What is Feed-Forward Neural Networks?

Ginni
Updated on 15-Feb-2022 06:33:26

9K+ Views

Feed-forward neural networks allows signals to travel one approach only, from input to output. There is no feedback (loops) such as the output of some layer does not influence that same layer. Feed-forward networks tends to be simple networks that associates inputs with outputs. It can be used in pattern recognition. This type of organization is represented as bottom-up or top-down.Each unit in the hidden layer is generally completely connected to some units in the input layer. Because this network includes standard units, the units in the hidden layer compute their output by multiplying the value of each input by ... Read More

What is the C5 Pruning Algorithm?

Ginni
Updated on 15-Feb-2022 06:31:12

306 Views

C5 is the current version of the decision-tree algorithm that Australian researcher, J. Ross Quinlan has been developing and refining for several years. A prior version, ID3, established in 1986, was influential in the area of machine learning and its successors are used in multiple commercial data mining services.The trees increase by C5 are same to those improves by CART. Like CART, the C5 algorithm first improves an overfit tree and then prunes it back to make a more dynamic model. The pruning method is complex, but C5 does not create use of a validation set to select from between ... Read More

What is the CART Pruning Algorithm?

Ginni
Updated on 15-Feb-2022 06:28:43

754 Views

CART is a famous decision tree algorithm first produced by Leo Breiman, Jerome Friedman, Richard Olshen, and Charles Stone in 1984. CART represents Classification and Regression Trees. The CART algorithm improves binary trees and continues divided considering new splits can be found that improves purity.There are some simpler subtrees, each of which defines a different trade-off among model complexity and training group misclassification rate. The CART algorithm recognizes a group of such subtrees as candidate models. These candidate subtrees are used to the validation group and the tree with the minimum validation set misclassification rate is chosen as the last ... Read More

Advertisements