SlideShare a Scribd company logo
hype-control
Identify bias in the news you read
John Joo
Insight Data Science Fellow
Obamacare will
require us to have
implanted RFID
chips!
906 News articles from 906 Opinion articles
Scrape articles:
Tokenize words
and remove
common words.
Kittens are highly social
animals.
[kittens, highly, social, animals]
Multinomial Naive Bayes Classifier
Count words in each class.
Calculate the probability that document belongs to each class.
Cross-validation yields >90% accuracy.
The Approach
Beautiful Soup
python-goose
John Joo
Applied Physics, PhD
Validation results
● Repeated random sub-sampling validation
– News and opinion article data set were not equal.
● Repeated 10x.
precision recall f1-score support
news 0.910 0.962 0.935 2270
opinion 0.964 0.914 0.938 2270
avg /total 0.937 0.938 0.937 4540

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Presentation

  • 1. hype-control Identify bias in the news you read John Joo Insight Data Science Fellow
  • 2.
  • 3. Obamacare will require us to have implanted RFID chips!
  • 4.
  • 5.
  • 6. 906 News articles from 906 Opinion articles Scrape articles: Tokenize words and remove common words. Kittens are highly social animals. [kittens, highly, social, animals] Multinomial Naive Bayes Classifier Count words in each class. Calculate the probability that document belongs to each class. Cross-validation yields >90% accuracy. The Approach
  • 9. Validation results ● Repeated random sub-sampling validation – News and opinion article data set were not equal. ● Repeated 10x. precision recall f1-score support news 0.910 0.962 0.935 2270 opinion 0.964 0.914 0.938 2270 avg /total 0.937 0.938 0.937 4540