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Pastimes : Computer Learning
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From: Don Green11/12/2019 2:46:57 PM
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goldworldnet

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Josh

AI can predict if you'll die soon – but we've no idea how it works

Here is a suggestion for one of your polls?

Would you want to know, so at least you could better prepare yourself and your loves if you should choose?

1. Yes

2. No

Who you keep the results a secret?
3. Yes

4. No.

My answers are Yes and Yes.



Artificial intelligence can predict a person’s chances of dying within a year by looking at heart test results – even when they look normal to doctors. How it does so is a mystery.

Brandon Fornwalt at healthcare provider Geisinger in Pennsylvania, US and colleagues tasked an AI with examining 1.77 million electrocardiogram (ECG) results from nearly 400,000 people to predict who was at a higher risk of dying within the next year.

An ECG records the electrical activity of the heart. Its pattern changes in cardiac conditions including heart attacks and atrial fibrillation.



The team trained two versions of the AI: in one, the algorithm was only given the raw ECG data, which measures voltage over time. In the other, it was fed ECG data in combination with patient age and sex.

They measured the AI’s performance using a metric known as AUC, which measures how well a model distinguishes between two groups of people – in this case, patients who died within a year and those who survived. The AI consistently scored above 0.85, where a perfect score is 1 and a score of 0.5 indicates no distinction between the two groups.

newscientist.com
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