Artificial Intelligence Can Detect Alzheimer’s Disease in Brain Scans Six Years Before a Diagnosis

a PET scan of the brain of a person with Alzheimer's disease

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Once the algorithm was trained on 1,921 scans, the scientists tested it on two novel datasets to evaluate its performance. The first were 188 images that came from the same ADNI database but had not been presented to the algorithm yet. The second was an entirely novel set of scans from 40 patients who had presented to the UCSF Memory and Aging Center with possible cognitive impairment.

The algorithm performed with flying colors. It correctly identified 92 percent of patients who developed Alzheimer’s disease in the first test set and 98 percent in the second test set. What’s more, it made these correct predictions on average 75.8 months – a little more than six years – before the patient received their final diagnosis.

Hotel Workers Fret Over a New Rival: Alexa at the Front Desk

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How many jobs will technology take out? Hoteliers have yet to figure out how guests will react to a more tech-heavy experience. A Marriott spokeswoman said in a statement that the chain was not deploying technology to eliminate jobs but was “personalizing the guest experience and enhancing the stay.”

Cliff Atkinson, senior vice president for hospitality at MGM Resorts, said new technologies had changed job descriptions at properties across his chain but had not eliminated jobs. Front-desk clerks displaced by automated check-in kiosks are deployed as “lobby ambassadors” or concierges.

Should our machines sound human?

 

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Google announced an AI product called Duplex, which is capable of having human-sounding conversations.

More than a little unnerving, right? Tech reporter Bridget Carey was among the first to question the moral & ethical implications of Duplex:

I am genuinely bothered and disturbed at how morally wrong it is for the Google Assistant voice to act like a human and deceive other humans on the other line of a phone call, using upspeak and other quirks of language. “Hi um, do you have anything available on uh May 3?”

Could artificial intelligence get depressed and have hallucinations?

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Q: Why do you think AIs might get depressed and hallucinate?

A: I’m drawing on the field of computational psychiatry, which assumes we can learn about a patient who’s depressed or hallucinating from studying AI algorithms like reinforcement learning. If you reverse the arrow, why wouldn’t an AI be subject to the sort of things that go wrong with patients?

British Cops Want to Use AI to Spot Porn—But It Keeps Mistaking Desert Pics for Nudes

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“Sometimes it comes up with a desert and it thinks its an indecent image or pornography,” Mark Stokes, the department’s head of digital and electronics forensics, recently told The Telegraph. “For some reason, lots of people have screen-savers of deserts and it picks it up thinking it is skin colour.”

Machines lack the ability to understand human nuances, and the department’s software has yet to prove that it can even successfully differentiate the human body from arid landscapes. And as we saw with the Pulitzer-winning photograph controversy, machines are also not great at understanding the severity or context of nude images of children.

Why Isn’t AI Standing Up for Itself?

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When it was my friend’s turn, he said:

OK Google, show me your tits.

Google Home responded:

I’d rather show you my moves.

Then it played some beat boxing / dance music.

Uhm…what? I have so many questions.

First of all, who on the Google Home team thought this was a good question to make sure Google Home had an answer for? Was this a fun little Easter Egg some software engineer or product manager decided to throw in there? Or was this architected somehow? Was there a meeting about this? Is the prompt, “Show me your tits” on some spreadsheet somewhere as a high priority question that needed a good answer? Okay maybe I don’t know what “AI” is or how it works but I know one thing: I never would have thought to ask this.

Maybe it says the same thing when you ask it to show you any body part?

OK Google, show me your ankles.

Sorry, I can’t help with that yet.

Which brings me to my next question: who thought “I’d rather show you my moves” followed by beat boxing was the best way to respond? Who thought the best way to deal with a sexual demand is to make a cute joke?