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Comment by nl

17 days ago

The Asirra paper isn't from a ML research group. The statement: "Barring a major advance in machine vision, we expect computers will have no better than a 1/54,000 chance of solving it" is just a statement of fact - it wasn't any forms of prediction.

If you read the paper you note that they surveyed researchers about the current state of the art ("Based on a survey of machine vision literature and vision ex- perts at Microsoft Research, we believe classification accuracy of better than 60% will be difficult without a significant advance in the state of the art.") and noted what had been achieved as PASCAL 2006 ("The 2006 PASCAL Visual Object Classes Challenge [4] included a competition to identify photos as containing several classes of objects, two of which were Cat and Dog. Although cats and dogs were easily distinguishable from other classes (e.g., “bicycle”), they were frequently confused with each other.)

I was working in an adjacent field at the time. I think the general feeling was that advances in image recognition were certainly possible, but no one knew how to get above the 90% accuracy level reliably. This was in the day of hand coded (and patented!) feature extractors.

OTOH, stock market prediction via learning methods has a long history, and plenty of reasons to think that long term prediction is actually impossible. Unlike vision systems there isn't another thing that we can point to to say that "it must be possible" and in this case we are literally trying to predict the future.

Short term prediction works well in some cases in a statistical sense, but long term isn't something that new technology seems likely to solve.

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nl

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falcor84  16 days ago

Maybe I misunderstand, but it seems that there's nothing in your comment that contradicts any aspect of mine.

Regarding image classification. As I see it, a company like Microsoft surveying researchers about the state of the art and then making a business call to recommend the use of it as a captcha is significantly more meaningful of a prediction than any single paper from an ML research group. My intent was just to demonstrate that it was widely considered to be a significant open problem, which it clearly was. That in turn led to wider interest in solving it, and it was solved soon after - much faster than expected by people I spoke to around that time.

Regarding stock market prediction, of course I'm not claiming that long term prediction is possible. All I'm saying is that I don't see a reason why quant trading could be used as a captcha - it's as pure a pattern matching task as could be, and if AIs can employ all the context and tooling used by humans, I would expect them to be at least as good as humans within a few years. So my prediction is not the end of quant trading, but rather that much of the work of quants would be overtaken by AIs.

Obviously a big part of trading at the moment is already being done by AIs, so I'm not making a particularly bold claim here. What I'm predicting (and I don't believe that anyone in the field would actually disagree) is that as tech advances, AIs will be given control of longer trading time horizons, moving from the current focus on HFT to day trading and then to longer term investment decisions. I believe that there will still be humans in the loop for many many years, but that these humans would gradually turn their focus to high level investment strategy rather than individual trades.