Winnowing forks, generally made of wood, were common at the time, and several dating from this period have been found.
en.wikipedia.org Prior to the development of the winnowing barn, winnowing was done by hand using winnowing baskets a long and labor-intensive process.
en.wikipedia.org This can be done by winnowing, which is commonly done by hand, using a large sieve.
en.wikipedia.org Part of the rice harvest is grilled, ground, and winnowed, a ritual preparation for the upcoming celebration.
en.wikipedia.org The advantages are several orders of magnitude faster, memory efficiency, smaller decision trees, boosting (more accuracy), ability to weight different attributes, and winnowing (reducing noise).
en.wikipedia.org