Researchers have found that Twitter's image-cropping algorithm, which went viral after it was shown to exclude black people and men, is also coded with an indirect bias against a number of other groups.
The discovery was made during the Def Con hacker convention in Las Vegas in the US, where researchers found that the feature also discriminates against women who wear headscarves, people with white or grey hair and people who use wheelchairs.
The feature was removed after it was discovered that the image-cropping algorithm chose points of focus on pictures, which Twitter calls the saliency, and found occasional instances of bias in cropped pictures in favour of women and lighter skin tones.
According to findings, there was an 8 per cent difference from demographic parity in favour of women, 4 per cent difference in favour of white individuals overall, while comparisons of white and black women showed a difference of 7 per cent in favour of white women.
In comparisons of black and white men, there was a 2 per cent difference in favour of white men.
Twitter launched the saliency algorithm in 2018 to crop images to improve consistency in the size of photos, so viewers could see more tweets in one glance.
"We considered the trade-offs between the speed and consistency of automated cropping with the potential risks we saw in this research. One of our conclusions is that not everything on Twitter is a good candidate for an algorithm, and in this case, how to crop an image is a decision best made by people," Rumman Chowdhury, Twitter's director of software engineering, wrote in a blog post in May.
After the initial discovery, the company launched a competition, inviting researchers to identify other ways the image-cropping algorithm could cause harm.
Twitter gave out cash prizes, including $3,500, to the winner, and smaller amounts to runners-up.
TOP 5 DRIVERS 2019
1 Lewis Hamilton, Mercedes, 10 wins 387 points
2 Valtteri Bottas, Mercedes, 4 wins, 314 points
3 Max Verstappen, Red Bull, 3 wins, 260 points
4 Charles Leclerc, Ferrari, 2 wins, 249 points
5 Sebastian Vettel, Ferrari, 1 win, 230 points
UAE squad
Men's draw: Victor Scvortov and Khalifa Al Hosani, (both 73 kilograms), Sergiu Toma and Mihail Marchitan (90kg), Ivan Remarenco (100kg), Ahmed Al Naqbi (60kg), Musabah Al Shamsi and Ahmed Al Hosani (66kg)
Women’s draw: Maitha Al Neyadi (57kg)
Key products and UAE prices
iPhone XS
With a 5.8-inch screen, it will be an advance version of the iPhone X. It will be dual sim and comes with better battery life, a faster processor and better camera. A new gold colour will be available.
Price: Dh4,229
iPhone XS Max
It is expected to be a grander version of the iPhone X with a 6.5-inch screen; an inch bigger than the screen of the iPhone 8 Plus.
Price: Dh4,649
iPhone XR
A low-cost version of the iPhone X with a 6.1-inch screen, it is expected to attract mass attention. According to industry experts, it is likely to have aluminium edges instead of stainless steel.
Price: Dh3,179
Apple Watch Series 4
More comprehensive health device with edge-to-edge displays that are more than 30 per cent bigger than displays on current models.
Day 2, Abu Dhabi Test: At a glance
Moment of the day Dinesh Chandimal has inherited a challenging job, after being made Sri Lanka’s Test captain. He responded in perfect fashion, with an easy-natured century against Pakistan. He brought up three figures with a majestic cover drive, which he just stood and admired.
Stat of the day – 33 It took 33 balls for Dilruwan Perera to get off the mark. His time on zero was eventful enough. The Sri Lankan No 7 was given out LBW twice, but managed to have both decisions overturned on review. The TV replays showed both times that he had inside edged the ball onto his pad.
The verdict In the two previous times these two sides have met in Abu Dhabi, the Tests have been drawn. The docile nature of proceedings so far makes that the likely outcome again this time, but both sides will be harbouring thoughts that they can force their way into a winning position.
Understand What Black Is
The Last Poets
(Studio Rockers)
RESULT
Huddersfield Town 1 Manchester City 2
Huddersfield: Otamendi (45' 1 og), van La Parra (red card 90' 6)
Man City: Agüero (47' pen), Sterling (84')
Man of the match: Christopher Schindler (Huddersfield Town)
SUZUME
%3Cp%3EDirector%3A%20Makoto%20Shinkai%3C%2Fp%3E%0A%3Cp%3EStars%3A%20Nanoka%20Hara%2C%20Hokuto%20Matsumura%2C%20Eri%20Fukatsu%3C%2Fp%3E%0A%3Cp%3ERating%3A%204%2F5%3C%2Fp%3E%0A
Red flags
- Promises of high, fixed or 'guaranteed' returns.
- Unregulated structured products or complex investments often used to bypass traditional safeguards.
- Lack of clear information, vague language, no access to audited financials.
- Overseas companies targeting investors in other jurisdictions - this can make legal recovery difficult.
- Hard-selling tactics - creating urgency, offering 'exclusive' deals.
Courtesy: Carol Glynn, founder of Conscious Finance Coaching
Roll of honour: Who won what in 2018/19?
West Asia Premiership: Winners – Bahrain; Runners-up – Dubai Exiles
UAE Premiership: Winners – Abu Dhabi Harlequins; Runners-up – Jebel Ali Dragons
Dubai Rugby Sevens: Winners – Dubai Hurricanes; Runners-up – Abu Dhabi Harlequins
UAE Conference: Winners – Dubai Tigers; Runners-up – Al Ain Amblers
What is safeguarding?
“Safeguarding, not just in sport, but in all walks of life, is making sure that policies are put in place that make sure your child is safe; when they attend a football club, a tennis club, that there are welfare officers at clubs who are qualified to a standard to make sure your child is safe in that environment,” Derek Bell explains.
The specs: 2018 Infiniti QX80
Price: base / as tested: Dh335,000
Engine: 5.6-litre V8
Gearbox: Seven-speed automatic
Power: 400hp @ 5,800rpm
Torque: 560Nm @ 4,000rpm
Fuel economy, combined: 12.1L / 100km
Formula Middle East Calendar (Formula Regional and Formula 4)
Round 1: January 17-19, Yas Marina Circuit – Abu Dhabi
Round 2: January 22-23, Yas Marina Circuit – Abu Dhabi
Round 3: February 7-9, Dubai Autodrome – Dubai
Round 4: February 14-16, Yas Marina Circuit – Abu Dhabi
Round 5: February 25-27, Jeddah Corniche Circuit – Saudi Arabia
What drives subscription retailing?
Once the domain of newspaper home deliveries, subscription model retailing has combined with e-commerce to permeate myriad products and services.
The concept has grown tremendously around the world and is forecast to thrive further, according to UnivDatos Market Insights’ report on recent and predicted trends in the sector.
The global subscription e-commerce market was valued at $13.2 billion (Dh48.5bn) in 2018. It is forecast to touch $478.2bn in 2025, and include the entertainment, fitness, food, cosmetics, baby care and fashion sectors.
The report says subscription-based services currently constitute “a small trend within e-commerce”. The US hosts almost 70 per cent of recurring plan firms, including leaders Dollar Shave Club, Hello Fresh and Netflix. Walmart and Sephora are among longer established retailers entering the space.
UnivDatos cites younger and affluent urbanites as prime subscription targets, with women currently the largest share of end-users.
That’s expected to remain unchanged until 2025, when women will represent a $246.6bn market share, owing to increasing numbers of start-ups targeting women.
Personal care and beauty occupy the largest chunk of the worldwide subscription e-commerce market, with changing lifestyles, work schedules, customisation and convenience among the chief future drivers.
In The Heights
Directed by: Jon M. Chu
Stars: Anthony Ramos, Lin-Manual Miranda
Rating: ****
THE BIO
Favourite author - Paulo Coelho
Favourite holiday destination - Cuba
New York Times or Jordan Times? NYT is a school and JT was my practice field
Role model - My Grandfather
Dream interviewee - Che Guevara
