👍🏻Sentiment analysis in social networks in Python with VADER without developing an ML model
Not every classification problem needs machine learning models: sometimes even simple approaches can give excellent results. For example, VADER (Valence Aware Dictionary and sEntiment Reasoner) is a vocabulary and rule based sentiment analysis model. The project source code is available on Github under the MIT license: https://github.com/cjhutto/vaderSentiment
VADER can efficiently handle dictionaries, abbreviations, capital letters, repetitive punctuation marks, emoticons (😢 , 😃 , 😭, etc.), etc., which are commonly used in social networks to express sentiment, making it an excellent text sentiment tool. The advantage of VADER is that it evaluates the mood of any text without prior training of ML models. The result generated by VADER is a dictionary of 4 keys neg, neu, pos and components (compound):
• neg, neu and pos mean negative, neutral and positive respectively. Their sum must be equal to 1 or close to it in a floating point operation.
• Compound corresponds to the sum of the valency scores of each word in the lexicon and determines the degree of mood, and not the actual value, unlike the previous ones. Its value ranges from -1 (the strongest negative mood) to +1 (the strongest positive mood). The use of a composite score may be sufficient to determine the main tone of the text. Compound ≥ 0.05 for positive mood, compound ≤ -0.05 for negative mood, compound ranges from -0.05 to 0.05 for neutral mood
Try Google Colab: https://colab.research.google.com/drive/1_Y7LhR6t0Czsk3UOS3BC7quKDFnULlZG?usp=sharing
Example: https://towardsdatascience.com/social-media-sentiment-analysis-in-python-with-vader-no-training-required-4bc6a21e87b8