It USES ARIMA model to analyze the trend of the BPI index in the future based on analyze it's fluctuate rule.

最后在分析BPI指数波动规律的基础上，利用ARIMA模型分析对该指数未来几期的走势进行了展望。

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Music industry trade body, the BPI, said it would take legal action if the telecoms firm refused to co-operate.

音乐行业贸易组织（BPI）称，如果电信公司拒绝合作，将采取法律行动。

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The development team on a BPI project is actually a team of teams, each responsible for a large subsystem of the supersystem.

BPI项目的开发团队实际上是一个拥有很多团队的团队，每个团队负责超级系统中的一个大型的子系统。

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But the BPI's Sarah Roberts feels it is a sign of a healthy industry.

BBC: Keeping music alive

Mr Taylor has requested that the Pirate Party UK respond to the BPI's letter by 6 December.

BBC: Music industry group BPI demands pirate proxy closure

Almost one in five consumers (19.6%) now prefers to buy all their music as downloads, says trade body the BPI.

BBC: Digital music 'becomes mainstream' in the UK