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Fortune (July 19)

2023/ 07/ 20 by jd in Global News

“Over just a few months, ChatGPT went from correctly answering a simple math problem 98% of the time to just 2%.” This doesn’t necessarily show later versions are inferior as they might perform better on other tasks. The study which uncovered this does prove the existence of “wild fluctuations—called drift—in the technology’s ability to perform certain tasks.” Drift may arise from the rather “unpredictable effects of changes in one part of the model on others.”

 

The Lancet (October 10)

2017/ 10/ 12 by jd in Global News

On a somewhat encouraging note, a recent study on worldwide trends in weight finds “the rising trends in children’s and adolescents’ BMI have plateaued in many high-income countries, albeit at high levels.” On a less positive note, childhood obesity “has accelerated in parts of Asia.” Nevertheless, food security remains an urgent priority because “the number of children and adolescents aged 5–19 years in the world who are moderately or severely underweight remains larger than those who are obese.” Striking the right balance remains challenging as “the experiences of east Asia and Latin America and the Caribbean show that the transition from underweight to overweight and obesity can be rapid, and overwhelm the national capacity needed to engender a healthy transition.”

 

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