Found 216 Articles for Data Analysis

A matrix is a structure which is used to store and work with numeric data. Each value stored in a matrix is referred to as an element. Sometimes, we need to swap or change the position of these elements within the matrix. We can use MATLAB to perform this task i.e., swapping the elements of the matrix. In this tutorial, I will explain how we can use MATLAB to swap the elements in a matrix. Swap Elements in a Matrix MATLAB is a powerful tool that can be used to manipulate matrices. It provides various methods to swap the elements ... Read More

In MATLAB, we can perform various operations on matrices. One such operation is selecting random rows from a matrix. MATLAB provides several different methods of selecting random rows from a matrix. In this tutorial, I will explain different methods of selecting rows from a matrix randomly using MATLAB. Select Random Rows from a Matrix in MATALB In MATLAB, we have various built-in functions that can be used to randomly select rows from a matrix. The following are some commonly used functions to randomly select rows from a matrix − randperm() Function randsample() Function randi() Function datasample() Function Let ... Read More

Rounding toward negative infinity is a method of rounding a number "N" down to the nearest integer less than or equal to the number "N". This method is also called "flooring". In simple words, rounding a number toward negative infinity is a method of finding the largest integer number which is less than or equal to the given number. For example, consider a number 4.8, when this number is round to negative infinity. Then, it will become 4. This is because, 4 is the largest integer number less than or equal to 4.8. Similarly, if we have a negative ... Read More

Introduction Creating realistic artificial data has become increasingly important in recent years, thanks to the wealth of extensive datasets and advancements in machine learning techniques. Traditional methods like data enrichment and sampling fall short in accurately capturing the complexity and diversity of real-world situations. However, the Factorized Random Synthesizer (FRS) tackles these limitations head-on by combining factorization methods with randomization, enabling the production of top-notch synthetic data. Fundamentals of Factorization Techniques In the realm of machine learning, various methods, including factorization techniques, harness the power of data to reveal hidden patterns and representations. Matrix factorization, tensor factorization, and deep factorization ... Read More

RDA, or Regularized discriminant analysis, is a statistical method used in machine learning classification problems. It is a change that fixes problems faced with linear discriminant analysis (LDA). This article will discuss RDA, including its benefits, how it works, applications, and advantages. Linear Discriminant Analysis (LDA) LDA is a way to sort things into different groups by finding a linear set of features that can split two or more groups. It involves finding a way to map the data onto a place with fewer dimensions while keeping the distance between the classes as large as possible. LDA thinks that all ... Read More

Introduction In information retrieval and text analysis, solving problems is a vital part of finding the correct information from extensive collections of papers quickly and effectively. The Boolean and Vector Space Models are well-known models that offer different ways to solve problems. To improve knowledge retrieval processes, it is essential to understand these models and how they solve problems. Boolean Model The Boolean Model is a way to find information. It is based on Boolean logic about true and false numbers. This model shows documents and queries as sets of terms, where each term can be present (true) or missing ... Read More

MATLAB is a digital tool that is widely used in image processing, such as image transformation, noise removal from an image, detecting edges, and more. In this tutorial, I will explain how you can remove salt and pepper noise from a digital image using MATLAB. In a digital image, the "salt and pepper noise" is a type of impulse noise that degrade the image quality and cause errors in image processing, analysis, and transmission. Therefore, it is important to remove the salt and pepper noise from the image to minimize the challenges coming to image processing and analysis. Before ... Read More

A histogram is a graphical representation of data that shows the frequency distribution of data points. MATLAB provides a built−in function "histogram" to plot the histogram of a data set. What is a Histogram in MATLAB? In MATLAB, the histogram is a graphical method of representing the frequency distribution of a set of data points. It shows the frequency distribution of a data points within a certain interval called bin. In a histogram plot, the intervals or bins are represented over the x-axis and the frequency of data points over the y−axis. In MATLAB, the histogram is an efficient way ... Read More

The position of a number in an array or a matrix is also known as index of that number within the array or matrix. In MATLAB, arrays are one−indexed that means the index of the first element of the array will be "1", the index of the second element will be "2", and so on. To find the position of a number in an array, MATLAB provides various methods. Here, we will cover two commonly used methods, they are: Using "find" function. Using a loop mechanism. Let us explore these methods of finding the position of a number ... Read More

MATLAB is a powerful tool to perform operations and calculations related to arrays and matrices. In MATLAB, an array or a matrix is a type of data structure used to store numeric data. Each value stored in an array or matrix is termed as an element. The position of an element within an array or matrix is referred to as the index of the element. MATLAB provides a built−in function "find" which enable us to find the indices and values of non−zero elements in a given array or matrix. However, in MATLAB, we can also find the values and indices ... Read More