A Study Analyzing an Innovative Approach to Sentiment Analysis with VADER

Authors

  • Dr. Raman Chadha Professor, Computer Science & Engineering Department, UIE, CHANDIGARH University, Punjab, India.
  • Aryan Chaudhary Chief Scientific Advisor, Bio-Tech Sphere Research, India

Keywords:

Sentiment Analysis, Polarity, VADER

Abstract

Sentiment Analysis is the process of determining whether a written piece conveys a positive, negative, or neutral tone. A sentiment analysis system for text analysis combines natural language processing (NLP) and machine learning techniques to assign weighted sentiment scores to entities, topics, themes, and categories within a sentence or phrase. Sentiment analysis aids data analysts in large enterprises to gauge public opinion, conduct nuanced market research, monitor brand and product reputation, and understand customer experiences.

VADER (Valence Aware Dictionary and Sentiment Reasoner) is a lexicon and rule-based sentiment analysis tool designed specifically for analyzing sentiments expressed in social media. VADER utilizes a sentiment lexicon, which is a list of lexical features (such as words) categorized based on their semantic orientation as positive or negative. VADER not only provides a Positivity and Negativity score but also offers insights into the intensity of the sentiment. When analyzing a piece of text, VADER checks if any of the words in the text are present in the lexicon. It can identify elements that indicate the writer's sentiment, whether positive or negative, including informal language, multiple punctuation marks, acronyms, and even emoticons. Additionally, VADER accounts for intensifiers and negations in the text.

Author Biography

Dr. Raman Chadha, Professor, Computer Science & Engineering Department, UIE, CHANDIGARH University, Punjab, India.

Dean – Research & Development, Chandigarh Group of Colleges (CGC), Jhanjeri, Mohali-140307, Punjab, India.

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Published

2023-10-13