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Definition: The automated process of obtaining information from text
Definition: The automated process of obtaining information from text
Sentiment Analysis
Sentiment Analysis
- Tweets read each day and sorted
- Analyzed for 'positive' vs 'negative' keywords
- Data is matched with macro world events to create hedonometer.
- Twitter data is by far the most widely used tool for sentiment analysis. Scientists refer to the public opinions and viewpoints to often predict financial profits via movement of securities, or even to take real-time polls of political debates. Because the text is limited to a certain number of characters, it becomes easy to extract using the same format.
Bag of Words model
Bag of Words model
- Each sentence loses its grammar and punctuational sense
- Data Scientists only care about words, or a group of words
- Starting with Basics - more complex algorithims like google's includes punctuation and grammar using its search recommendations to autorcorrect on Google Drivex
Spam Filtering
Spam Filtering
- Text mining takes all emails that come into the inbox, and filters based on previous factors and algorithims
- All spam is sent to spam folder
- If sender is not in spam list, text is analyzed for generic coupouns and advertisements
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