未知

According to this method, intrusion detection is regarded as one-class classification problem.

该方法将入侵检测看作是一种单值分类问题，建立正常行为的支持向量描述模型，通过该模型可以检测各种已知和未知的攻击行为。

For one-class SVM, it's not used so can be any number.

检验数据文件中的label只用于计算准确度或误差，如果它是未知的，只需用一个数填写这一栏，也可以空着不填。

This study was conducted to investigate the tissue-specific distribution and ontogenetic expression pattern of 2810430M08Rik transcripts, and its function in T-cell development, activation and related T-cell immune responses.

本课题以2810430M08Rik基因产物在小鼠组织的特异性分布以及在T淋巴细胞免疫反应中的作用为主要研究对象，力求揭开此未知基因的神秘面纱。

"Prophylactic oophorectomy should not be recommended to women with a high risk of breast cancer who do not have documented mutations in BRCA1 or BRCA2, since these cases may be linked to mutations in unidentified genes that do not increase the risk of ovarian cancer," he writes."The effectiveness of prophylactic oophorectomy in carriers of BRCA mutations provides a strong rationale for genetic testing in women with a strong family history of cancer."

不应该对乳腺癌发生危险较高，但没有明确的BRCA1或者BRCA2突变的女性，推荐进行预防性卵巢切除术，因为这些情况也许与未知的，与卵巢癌的发生无关的基因突变有关，」他写道：「对於BRCA突变体携带者进行预防性卵巢切除术，为有很强的肿瘤家族史的女性，进行遗传学检查，提供了强有力的依据。

An opaque type is one whose internal structure is not known to the database.

不透明类型的内部结构对数据库来说是未知的。

Among other things, the Pentagon's assessment is said to criticize China's leaders for expanding their country's military in the absence of any discernible external threat, and for various other "known unkowns," such as opaqueness concerning the real size of China's military budget.

例如，据称五角大楼的这份评估将会批评中国领导人在没有明显的外部威胁的情况下扩张军队。它还会批评中国实际军费不透明等其他"已知的未知方面"。

In this paper, a research of the problem of optimal control for unknown nonlinearsystems is made.

本文针对未知非线性系统，就其最优控制问题的解决方案进行了相关研究。

In medical researches, the optimality of observed data about the postulated model was unknown in many cases.

研究中获得的数据关于某种假定模型的典型性是未知的，常常是非典型的。

It used to solve a large number of unknown things with the optimization problem.

它用于解决带有大量未知事物的优化问题。

Especially for multifrequence problems, both the order for the approximation of nonlinear functions and the iterative numbers for neural network learning will be decreased by several times.

利用这种新方法可以直接分析、辨识线性系统、双线性系统的稳定性和未知参数，并可直接求取性能指标下的最优控制律。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。