slv77

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301.
by slv77 11y ago
A large number of e-commerce shops still rely on heuristics (rules of thumb) to manage their fraud risk. Accertify is a major software vendor in the e-commerce space and their framework doesn't incorporate machine learning. Their sales
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by slv77 11y ago
I've worked in fraud prevention for large e-commerce sites for the last decade. Surprised these types of stories are still noteworthy enough to trigger a blog post by Maxmind. However I'd love if this triggered some comments and q
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by slv77 11y ago
At $60 dollars a barrel coal can be profitably converted into oil. Germany did it in WWII and South Africa's Sasol refined the process during the embargos.
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by slv77 11y ago
I work in fraud prevention and after 10 years of working with complex data and I am just starting to use machine learning (with a lot of software that makes it simple). I'd be hesitant to call myself a Data Scientist but have borrowed
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by slv77 11y ago
Asking the stupid question... Was the stats 101 basic control charts and statistical sampling? Do you have a link to the paper?
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by slv77 11y ago
The PDVSA didn't have the technical expertise and capital to fully explore and exploit their oil fields. The oil majors had stakes in several projects that were nationalized starting in 2007: http://www.reuters.com/art
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by slv77 11y ago
The government nationalized their oil companies which, even at these prices, is still a reliable source of USD that is converted to Bolivars at the official exchange rates of 6.3 to 1. Importers could then bid for these dollars at different
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by slv77 11y ago
Going to the farmland example and assuming it is a closed system. The default process isn't painless as losses have to be allocated between the banks investors, farmer, suppliers and construction workers. While the question of who take
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by slv77 11y ago
The thrust of my comment is that resolving bad debt isn't merely a painless exercise in monetary policy. Resolving the bad debt requires somebody to absorb those losses through reduced future consumption. Who absorbs those losses is
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by slv77 11y ago
Couple of points... - There has been no economy that has been able to grow debt as fast as China has without accumulating a large amount of bad debt. This is just as true for the US in the 1920's, Japan in the 1980's, Greece, Spai
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by slv77 11y ago
I'd be surprised if there was a large contingent of unemployed machine learning specialist sitting idle in Germany waiting for Apples investment dollars to unleash them. A billion dollars or even ten billion won't materilize the r
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by slv77 11y ago
A lot of those oversized cash accounts can be explained by corporate tax structures that hold cash overseas in subsidiaries. Repatriation of that cash would incur significant penalties. Pundits also suggest that shareholders who should be t
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by slv77 11y ago
Except that you are left with a fleet of militarized space craft that provide no economic value and a pile of debt that was used to finance the fleet. At that point somebody has to pay for that malinvestment through reduced future consumpti
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by slv77 11y ago
I would add... 4. People who need to circumvent capital controls and want to move money out of countries like China and Venezuela.
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by slv77 11y ago
While this is a textbook example reserve requirements haven't been a significant constraint on bank monetary creation since the 80's. The Bretton Woods system put in place after WWII and Nixon closing the gold window in the 1970&#
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by slv77 11y ago
Bit rot is the degradation of the performance of a ML model over time. When a model is trained it is learning a set of assumptions about the "universe" and over time the universe changes which can invalidate some of those assumpti
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by slv77 11y ago
1) Only Chinese people buy from Alibaba. The analysis points out that based on the quoted numbers the transaction volume exceeds Visa global peak traffic by about 3x. If a significant fraction of that volume was originating outside of Chin
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by slv77 11y ago
Been working in e-commerce fraud for ten years... The credit card security model is broken as designed with the exception of chip and pin and chip and signature. Uptake for 3D Secure is uneven around the globe. Some places it is mandatory a
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by slv77 11y ago
Banks are typically leveraged about 12 to 1 meaning that one dollar of the banks money is paired with 11 dollars of depositors money to fund a loan. Since the banks capital is scarce relative to depositors funds it is usually the limiting f