Twitter users have accused the company’s imaging algorithm of displaying racial and gender bias, saying the social media platform prioritises the faces of White men in image previews – regardless of who else may appear in the photos.

Unlike Instagram, which stretches or shrinks images to fit its main feed, Twitter shows preview versions of large photos. To see a full-sized image, users must first click the preview.

The system isn’t perfect, and Twitter often crops vital subjects out of the frame. This quirk has even reached meme status on the platform, where users exploit the preview function for peekaboo-style ‘Open for a surprise’ posts.

However, some users say the preview function isn’t just imperfect, but that it actively overlooks women and people of colour.

The programmer posted two composite images with matching portraits of US Senate Majority Leader Mitch McConnell, who is White, and former US President Barack Obama, the nation’s first-ever African American leader.

The results were stark: both previews showed McConnell’s face, but not Obama’s, regardless of where the latter’s face appeared in each full-sized image.

Other users have emulated Arcieri’s post, providing examples where Twitter’s preview algorithm has appeared to favour White men over pretty much anyone else.

Some users have claimed the effect can even be seen in artworks, where the algorithm appears to favour subjects with lighter skin tones over others.

So yeah maybe the reason my most of my black art hasn’t been doing so hot is because of twitters image algorithm….peep game

Responding to a mounting backlash, Twitter’s product communications lead Liz Kelley said the company didn’t find evidence of racial or gender bias during the algorithm’s testing phase, but said, “it’s clear that we’ve got more analysis to do.”

It is not immediately clear which factors Twitter’s algorithm is trained to prioritise when producing previews, and other factors relating to image size, resolution, or sharpness may be at play.

As facial-recognition algorithms become more prevalent in everyday life – from phone unlocking screens and Instagram filters, to surveillance tools used by law enforcement agencies – critics have railed against racial bias embedded in the technology.

Last year, WIRED reported that some facial recognition algorithms from developer Idemia, which has provided services to Victoria Police, were shown in tests to misidentify the faces of Black women ten times more often than other sample subjects.

There now exists an organisation, the Algorithmic Justice League, designed to combat such potent biases baked into code – and the real-world impacts they could have.

Kelley, Twitter’s product spokesperson, said the company will make the algorithm’s code open source, allowing outside developers to identify potential issues with the system.

“This is about doing the right thing and making sure our systems are working as intended,” Kelley added.

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Bias, Twitter, Algorithm, Racial bias in criminal news in the United States, Racism, White people

World news – US – Twitter Accused Of Baked-In Racial Bias After Users Notice Algorithm Keeps Choosing White Men

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