IT certification and Exams

Let’s see the unique value for the income target variable and see the distribution of income:df[‘income’].value_counts() The result is as follows: Figure 1.19 – Distribution of income As shown in the results, there are 24,720 observations with an income greater than $50K and 7,841 observations with an income of less than $50K. In the real […]
In this section, we are going to explore each variable separately. We are going to summarize the data for each feature and analyze the pattern present in it. Univariate analysis is an analysis using individual features. We will also perform a bivariate analysis later in this section. Univariate analysis Now, let us do a univariate […]
In this section, we will derive the summary statistics for numerical columns. Before generating summary statistics, we will identify the categorical columns and numerical columns in the dataset. Then, we will calculate the summary statistics for all numerical columns. We will also calculate the mean value of each numerical column for the target class. Summary […]
Finally, you deploy your model into production and monitor for continuous improvement using ML Operations (MLOps). MLOps aims to streamline the process of taking ML models to production and maintaining and monitoring them. In this book, we will focus on data labeling. In a real-world project, the datasets that sources provide us with for analytics […]
In this step, you identify and gather potential data sources that may be relevant to your project’s objectives. This involves finding datasets, databases, APIs, or any other sources that may contain the data needed for your analysis and modeling. The goal of data discovery is to understand the landscape of available data and assess its […]
In this section, we will gain an understanding of what EDA is. We will see why we need to perform it and discuss its advantages. We will also look at the life cycle of an ML project and learn about the role of data labeling in this cycle. EDA comprises data discovery, data collection, data […]
Imagine embarking on a journey through an expansive ocean of data, where within this vastness are untold stories, patterns, and insights waiting to be discovered. Welcome to the world of data exploration in machine learning (ML). In this chapter, I encourage you to put on your analytical lenses as we embark on a thrilling quest. […]
In the preceding code block, we created the exerciseList signal by declaring it to contain ExerciseSetList and initializing it with an empty list. Then, we changed the getInitialList method toupdate the exerciseList signal based on the API return. We also changed the delete method to update the signal after deleting the diary entry. As we […]
Controlling the state of a frontend application is one of the biggest challenges for a developer, as by nature, the interface is dynamic and needs to react to various user actions. Angular, with its stacks included philosophy, already had tools suitable for this task, and we studied in Chapters 5, Angular Services and the Singleton […]
As frontend developers, we need to worry about the technical performance of our applications. Small UI details, such as the loading screen that we created in Chapter 8, Improving Backend Integrations: the Interceptor Pattern, improve our users’ perception of the application’s performance. One of these UI details is the transition between pages of our application. […]


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