The performance of speaker verification systems is often compromised under real-world environments.

说话人确认系统的性能往往是在真实世界的环境受到损害。

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Sun Microsystems also wanted to be able to run a virtual world that could connect to its own databases and user-verification systems.

Sun Microsystems也想能够运行自己的虚拟世界，用以使自己的数据库和用户验证系统相连接。

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Compared with K-NN and ENN identity verification systems, the performance of verification system using improved ENN is enhanced.

实验表明，改进ENN的身份鉴别融合系统的认证率比K-NN和传统ENN融合系统有所提高。

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The trouble is, it is not clear that these identity-verification systems are worth the cost and trouble of introducing them.

ECONOMIST: BIOMETRICS

This proposal threatens to become the latest in a long line of expensive verification systems that fail a basic cost-benefit analysis and threaten to drown Americans in bureaucracy at every stage of their lives.

FORBES: Ending Birthright Citizenship Would Be Costly for Americans

He said there must be "scientific verification" of the systems that food retailers' use to audit their supply chain.

BBC: Burgers