data science - Nomidl

10 Essential Tips for Building ML Models for Anomaly Detection

Anomaly detection is an important component of many data-driven applications. It enables us to efficiently identify anomalous behaviour and detect malicious activities that may otherwise be difficult to spot. In this blog post, we will discuss 10 essential tips for constructing machine learning models for anomaly detection with respect to data pre-processing, feature selection and…

What is Text Mining and How it is Used in Data Science?

In the field of data science, text mining is a valuable technique used to extract valuable insights from unstructured data. This method involves extracting qualitative information from written text such as emails, social media posts and customer reviews. In this article, we will explore what text mining is, how it is used in data science,…

10 Common Data Science Interview Questions and How to Answer Them?

Data science has become a very competitive field and it is important to prepare for data science interviews if you are looking for your dream job. As part of the interview process, you can expect to be asked a number of questions to assess your knowledge, skills and experience in the field. In this blog…

Top 5 Natural Language Processing Libraries for Data Scientist

In this blog post we are going to talk about Natural Language Processing (NLP) which is one of the branches of machine learning which focuses on teaching machines to understand human language. it has multiple applications, from chatbots to sentiment analysis, and is an important skill in the data scientist’s toolbox. let’s look at five…

10 Essential Python Libraries for Data Science in 2023

Data Science is a constantly evolving field, and with freshly technologies emerging, it’s important to keep up with the latest tools and libraries. In this article, we’ll discuss 10 essential Python libraries that all data scientist should know in 2023. These libraries will serve you to analyze, visualize, and model data more efficiently, and ultimately…

Explanation for AI and Data Science by ChatGPT AI

Question to ChatGPT: Explain AI Artificial intelligence (AI) is the ability of a computer program or a machine to simulate human intelligence, including the ability to reason, learn, and solve problems. AI can be applied to a wide range of field, including robotics, natural language processing, computer vision, and machine learning. The goal of AI…

3 Concepts Every Data Scientist Must Know Part – 3

1. What is the significance of sampling? Name some techniques for sampling? For analyzing the data, we cannot proceed with the whole volume at once for large datasets. We need to take some samples from the data which can represent the whole population. While making a sample out of complete data, we should take the…

3 Concepts Every Data Scientist Must Know Part – 2

1. Bagging and Boosting Bagging and Boosting are two different ways used in combining base estimators for ensemble learning (Like random forest combining decision trees). Bagging means aggregating the predictions of several weak learners. We can think of it combining weak learners is used in parallel. The average of the predictions of several weak learners…

NumPy for Data Science – Part 5

The difference between copy and view Copy View Join & split function Join array – joining means putting contents of two or more array in a single array. hstack vs vstack The major difference is that np.hstack combines NumPy arrays horizontally and np.vstack combines arrays vertically. Split – splitting breaks one array into multiple. NumPy…

NumPy for Data Science – Part 4

Broadcasting NumPy Arrays The term broadcasting describes how NumPy treats arrays with different shapes during arithmetic operations. Subject to certain constraints, the smaller array is “broadcast” across the larger array in order that they have compatible shapes. NumPy operations are usually done on pairs of arrays on an element-by-element basis. Within the simplest case, the…