1 / 29

Sentiment Analysis | Machine Learning Algorithms | Data Science Tutorial | Edureka

This Edureka Sentiment Analysis tutorial will help you understand all the basics of Sentiment Analysis algorithm along with examples. This tutorial also has an interesting demo on Sentiment Analysis in R - El Clasico Sentiment Analysis. Below are the topics covered in this tutorial: <br><br>1. What is Machine Learning? <br>2. Why Sentiment Analysis? <br>3. What is Sentiment Analysis? <br>4. How Sentiment Analysis Works? <br>5. Sentiment Analysis Demo - El Clasico <br>6. Sentiment Analysis Use Case

EdurekaIN
Download Presentation

Sentiment Analysis | Machine Learning Algorithms | Data Science Tutorial | Edureka

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sentiment Analysis www.edureka.co/data-science Edureka’s Data Science Certification Training

  2. What Will You Learn Today? 3 1 2 Why Sentiment Analysis? What is Sentiment Analysis? What is Machine Learning? 5 6 4 How Sentiment Analysis Works? Sentiment Analysis - Demo Sentiment Analysis – Use Case www.edureka.co/data-science Edureka’s Data Science Certification Training

  3. What is Machine Learning? www.edureka.co/data-science Edureka’s Data Science Certification Training

  4. What is Machine Learning? Machine learning is a type of artificial intelligence (AI) that provides computers with the ability to learn without being explicitly programmed. Machine learning focuses on the development of computer programs that can change when exposed to new data. www.edureka.co/data-science Edureka’s Data Science Certification Training

  5. What is Machine Learning? Types of Machine Learning: Types of Learning Supervised Learning Reinforcement Learning Unsupervised Learning www.edureka.co/data-science Edureka’s Data Science Certification Training

  6. What is Machine Learning? Types of Machine Learning: Types of Learning Supervised Learning Reinforcement Learning Unsupervised Learning www.edureka.co/data-science Edureka’s Data Science Certification Training

  7. What is Machine Learning? Types of Machine Learning: Types of Learning Supervised Learning Reinforcement Learning Unsupervised Learning www.edureka.co/data-science Edureka’s Data Science Certification Training

  8. What is Machine Learning? Types of Machine Learning: Types of Learning Supervised Learning Reinforcement Learning Unsupervised Learning Sentiment Analysis www.edureka.co/data-science Edureka’s Data Science Certification Training

  9. Why Sentiment Analysis? www.edureka.co/data-science Edureka’s Data Science Certification Training

  10. Why Sentiment Analysis? Let’s take an example here: Suppose you have an application which is very famous, and has around a billion users, and you decide to add a new functionality to your application, how will you get the feedback for it? www.edureka.co/data-science Edureka’s Data Science Certification Training

  11. Why Sentiment Analysis? Let’s take an example here: Suppose you have an application which is very famous, and has around a billion users, and you decide to add a new functionality to your application, how will you get the feedback for it? Comes in, Sentiment Analysis, so now you can focus on your negative posts, and improve your application!! Cool Right? www.edureka.co/data-science Edureka’s Data Science Certification Training

  12. What is Sentiment Analysis? www.edureka.co/data-science Edureka’s Data Science Certification Training

  13. What is Sentiment Analysis? The process of computationally identifying and categorizing opinions expressed in a piece of text, especially in order to determine whether the writer's attitude towards a particular topic, product, etc. is positive, negative, or neutral. www.edureka.co/data-science Edureka’s Data Science Certification Training

  14. What is Sentiment Analysis? The process of computationally identifying and categorizing opinions expressed in a piece of text, especially in order to determine whether the writer's attitude towards a particular topic, product, etc. is positive, negative, or neutral. Remember this? www.edureka.co/data-science Edureka’s Data Science Certification Training

  15. How does it work? www.edureka.co/data-science Edureka’s Data Science Certification Training

  16. How does it work? Good Question! It’s very simple though. Positive Words Negative Words www.edureka.co/data-science Edureka’s Data Science Certification Training

  17. How does it work? Good Question! It’s very simple though. Positive Words Database Negative Words www.edureka.co/data-science Edureka’s Data Science Certification Training

  18. How does it work? Good Question! It’s very simple though. +1 for good Score 0 for neutral -1 for bad Positive Words Positive Sentences Neutral Sentences Sample Statement Negative Sentences Negative Words www.edureka.co/data-science Edureka’s Data Science Certification Training

  19. How Does the Algorithm Work? This is a sample statement Positive Words Negative Words *The words that are neither in positive nor in negative words would be neutral words with value 0 www.edureka.co/data-science Edureka’s Data Science Certification Training

  20. Sentiment Analysis : Example www.edureka.co/data-science Edureka’s Data Science Certification Training

  21. Sentiment Analysis Example Let’s take a sample statement here, with sample datasets. The Iphone7 is awesome! = +1 Good Awesome Great Happy Yes Interesting Bad Hate Sad Least Not Boring www.edureka.co/data-science Edureka’s Data Science Certification Training

  22. Sentiment Analysis Example Let’s take a sample statement here, with sample datasets. This movie is not that great, after the interval it was boring! = -1 +1 -1 = -1 Good Awesome Great Happy Yes Interesting Bad Hate Sad Least Not Boring www.edureka.co/data-science Edureka’s Data Science Certification Training

  23. Sentiment Analysis Example Let’s take a complex statement now, The service was terrible, but the food was great! Now how will you solve this? www.edureka.co/data-science Edureka’s Data Science Certification Training

  24. Sentiment Analysis Example Let’s take a complex statement now, The service was terrible, but the food was great! Such a case is called Constructive Conjunction. The way we solve it is like this, whenever there is a BUT in the sentence, it reforms the sentence like this, 1. 2. The service was terrible AND But the food was great! Hence, calculate their scores separately, this method is called Binary Sentiment Analysis www.edureka.co/data-science Edureka’s Data Science Certification Training

  25. Demo in R www.edureka.co/data-science Edureka’s Data Science Certification Training

  26. Demo in R We are going to do an El Clasico comparison of Real Madrid and Barcelona and see who is getting more positive tweets. Real Madrid C.F Barcelona www.edureka.co/data-science Edureka’s Data Science Certification Training

  27. Sentiment Analysis : Use Case www.edureka.co/data-science Edureka’s Data Science Certification Training

  28. Sentiment Analysis: Use Case Enhancing Customer Experience Customer experiences fall into three basic categories, positive, negative or neutral. Through sentiment analysis, companies can detect the tone and temperament of each and every word found in a customer’s social postings. With this, businesses can gain valuable insights into what they are doing right with regard to products, services and customer support and what they need to work on negative sentiments in order to enhance the overall customer experience. www.edureka.co/data-science Edureka’s Data Science Certification Training

  29. www.edureka.co/data-science Edureka’s Data Science Certification Training

More Related