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Maciej Gryka

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Removing Soft Shadows with Hard DataPyData Berlin 20162016-05-20
Claims a pipeline that learns soft-shadow mattes from photorealistic rendering and uses them to remove or edit shadows in RGB photos with only a brush mask. It…
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Gotta catch'em all recognizing sloppy work in crowdsourcing tasksPyData London 20162016-05-06
Claim: a machine learning classifier reliably flags lazy crowdsourced QA so fewer repeats and cheaper checks. Uses captured mouse and keystroke traces plus…
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Gotta catch'em all: recognizing sloppy work in crowdsourcing tasksPyData Amsterdam 20162016-03-12
Trains a random forest on hand‑labeled clicks keystrokes and network logs from tens of thousands of tests to flag lazy workers with about 90% accuracy. Uses a…
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