许多量化团队用机器学习 7×24 筛选因子，标准多依赖统计指标，黑箱式的统计套利是不是一场危险的游戏？

(used after a noun, verb or adjective to form a nominal expression, as in 皮革的[pi2 ge2 de5] "one made of leather" or 跑堂兒的|跑堂儿的[pao3 tang2 r5 de5] "a waiter (literally, one who runs back and forth in a restaurant)" or 新的[xin1 de5] "new one")

to add up

(of sb or sth) to be (located) at

risk; hazard

(respectful acknowledgement of a command) very well

(production) target; quota

to filter

to invest

to quantify; quantification; quantitative

to learn

CL:臺|台[tai2],部[bu4],個|个[ge4]

you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)

(adjective) standard

(bound form) multi-; poly-

also pr. [pu4 lu4]

pattern