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AI Detects Heart Failure from One Heartbeat: Study

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41–50 of 74 posts

Re: AI Detects Heart Failure from One Heartbeat: Study

#41
post #35
post #8

Wasn't a similar claim made about an AI detecting skin cancer from moles? Once the AI was deployed in the real world is failed miserably. I think it was a ton of false-positives because it was trained on images where cancerous moles all had images of rulers with them and the benign ones didn't have rulers in the image. So it just picked up on the ruler as a cancer indicator.

Would you happen to have a source for that story? My workplace has really swallowed the AI Kool-Aid lately, so I would like to have some cautionary counterexamples to demonstrate potential pitfalls of the technology. It's got a lot of interesting applications for our field which I am excited about, but there seems to be a tendency among non-experts to consider it a magic bullet that can solve any sort of problem. In…

Citation: https://jamanetwork.com/journals/jamadermatology/article-abs...

From the abstract:

This study’s findings suggest that skin markings significantly interfered with the CNN’s correct diagnosis of nevi by increasing the melanoma probability scores and consequently the false-positive rate. A predominance of skin markings in melanoma training images may have induced the CNN’s association of markings with a melanoma diagnosis. Accordingly, these findings suggest that skin markings should be avoided in dermoscopic images intended for analysis by a CNN.

Re: AI Detects Heart Failure from One Heartbeat: Study

#42
post #17

So first clarification is that heart failure != heart attack. Heart failure is a chronic condition where the heart is unable to pump hard enough to keep blood flowing through the body. Typically results in blood pooling in the leg, shortness of breath, etc. The study avoids the obvious pitfall, which is to put different slices of one patient's data into both training and test. The press also reports the training accu…

The study looks at 33 patients total, and the cases and controls come from entirely different data sets, with data coming from different devices that recorded signal at different frequencies.

There is nothing to see here.

Re: AI Detects Heart Failure from One Heartbeat: Study

#44
post #17

So first clarification is that heart failure != heart attack. Heart failure is a chronic condition where the heart is unable to pump hard enough to keep blood flowing through the body. Typically results in blood pooling in the leg, shortness of breath, etc. The study avoids the obvious pitfall, which is to put different slices of one patient's data into both training and test. The press also reports the training accu…

The study looks at 33 patients total, and the cases and controls come from entirely different data sets, with data coming from different devices that recorded signal at different frequencies. There is nothing to see here.

You realize the fact that the validation dataset is independent of the training dataset is a YUGE red flag right?

Re: AI Detects Heart Failure from One Heartbeat: Study

#45
post #10
post #5

I'm going to sound like a skeptical jerk here, but 490,000 heartbeats is how many patients? From what I recall these public ECG datasets are like 20 patients who underwent longitudinal ECGs. 500k heart beats is like 5 person-days of ECG recordings. Ninja Edit: N=~30 patients. For something like ECGs which are readily available, they really should have tried to get more patients. A single clinic anywhere does than 30…

And also different sources for positive and negative samples.

So they built a model that can tell the difference between the two different sources.

Re: AI Detects Heart Failure from One Heartbeat: Study

#49

Earlier quoted context omitted.

The study looks at 33 patients total, and the cases and controls come from entirely different data sets, with data coming from different devices that recorded signal at different frequencies. There is nothing to see here.

You realize the fact that the validation dataset is independent of the training dataset is a YUGE red flag right?

Where do they say that the validation dataset is independent of the training dataset?

The case dataset is independent of the control dataset.

Re: AI Detects Heart Failure from One Heartbeat: Study

#50
post #35
post #8

Wasn't a similar claim made about an AI detecting skin cancer from moles? Once the AI was deployed in the real world is failed miserably. I think it was a ton of false-positives because it was trained on images where cancerous moles all had images of rulers with them and the benign ones didn't have rulers in the image. So it just picked up on the ruler as a cancer indicator.

Would you happen to have a source for that story? My workplace has really swallowed the AI Kool-Aid lately, so I would like to have some cautionary counterexamples to demonstrate potential pitfalls of the technology. It's got a lot of interesting applications for our field which I am excited about, but there seems to be a tendency among non-experts to consider it a magic bullet that can solve any sort of problem. In…

Check this link out http://132.206.230.229/e706/gaming.examples.in.AI.html

There was a hn discussion about it a while back: https://news.ycombinator.com/item?id=18415031

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