🇺🇸 Welcome to Centr 🇺🇸

Brought to you by Pulse

Centr is a Chrome Extension that allows you to understand the bias of articles you read.

Cool! How does it work?

Centr scans the article you are reading and creates a Media Bias score.

This score is generated from a variety of statistical and deep learning methods. 🤓

So what do the Media Bias Scores mean? 📈

After scanning your article, Centr displays a graph visualizing the bias of the article.

The graph provided has 5 categories along the x-axis:


    Left: Strong liberal bias
    Left Leaning: Slightly liberal bias
    Center: Congrats! The news source you are reading is fairly objective & unbiased. Keep reading!
    Right Leaning: Slight conservative bias
    Right: Strong conservative bias

Scores represent the article only, not the overall bias of the news source itself.

Centr was also trained to work best on articles related to politics, so don’t read too much into the score on the sports or tech site you may be reading. 📰

Ok, but how does it ACTUALLY work?

The Centr model was trained with the Kaggle “All the News Dataset” on 30,000 articles from over 15 different media sources across the political spectrum. This data was supplemented with additional articles collected via web scraping. Centr uses the ULMFiT algorithm introduced by FastAI. This algorithm was used to create a language model and a classifier that sorts articles into the 5 buckets mentioned above.

There’s no way this can be accurate, right?

No, it really is...

However, like most things, technology can let us down from time-to-time. Centr’s model was trained on a state of the art NVIDIA GPU for several days on tens of thousands of articles, producing a score with 97% accuracy.

If you think Centr is blatantly wrong, drop us a line at contact@pulsevoter.com or come visit us in our dorms @ Stanford--we’d be happy to talk 😏

Great, but why do we need Centr?

Today’s polarized political climate and information overload makes it difficult to find objective media sources. ⚖️

Centr cuts the noise and tells you how your news leans. Knowing this might not make you happy, but it's important we all recognize our news consumption biases to have better political dialogue.

Pulse created Centr as a way to show how technology can help combat fake news & media bias. 🎯

Ok, this is dope! How do I share?

We’re glad you like our product! Feel free to share this download link with friends, families & peers!

Who created Centr anyway?

Centr was created by Pulse (pulsevoter.com), a team of Stanford students changing the way citizens connect with government and consume legislative information.

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Thanks for downloading & happy reading!


Pulse is a civic engagement product connecting citizens to their elected representatives.
Centr is a product of Pulse Voter Inc.
July 2018.