yandex20131017 ageev-2

Post on 02-Jul-2015

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Научно-технический семинар Яндекса 17 октября. Докладчик Михаил Агеев. Тема - Анализ неявных предпочтений пользователей.

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Example Questions:

• How many Swedes speak English as a

percentage?

• When the jominy test was invented?

• Which metals float on water?

• What is oxygen partial pressure at 5000

feet?

• How many Argentine soldiers died in

falklands islands war?

• What ingredients in cough medicine make

you hallucinate?

• How do you say welcome in kashmiri?

• Am I allowed to carry a parachute onboard

as a hand luggage?

• What animal is smaller than a bear but it

eats a plant called bearberry?

Worker (optional) feedback:

• "That was pretty interesting and

worked well. I felt like I was able

to get answers to most of the

questions pretty easily."

• "Little confusing at first… search

engines were not very helpful on

most without some in depth

searching"

– ±

λ

– λ

– λ

λ = 0.7

Алгоритмы предсказания

интересности фрагмента:

– GBM

– Decision Tree

Проверка на Validation Set

𝑖

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