鉴别

Minimum squared-error is one of the commonly used criteria to find the weight vector of a linear discriminant function.

最小二乘误差是用于确定线性鉴别函数的重要准则之一，它将寻找鉴别函数中的权向量的问题，归结为求解一个线性方程组。

Based on Fisher's discriminant function, optimal sets of discriminant vectors have great influence in the area of pattern recognition.

在模式识别领域中，基于Fisher鉴别准则函数的最佳鉴别变换有着重大的影响。

Based on Fisher\s discriminant function, optimal sets of discriminant vectors have great influence in the area of pattern recognition.

在模式识别领域中，基于 Fisher 鉴别准则函数的最佳鉴别变换有著重大的影响。

Our idea is to employ a large set of linear discriminant functions instead of a small set of nonlinear functions.

我们的想法是利用比较多组的线性鉴别器来取代比较少组的非线性鉴别器。

In field real time discrimination,two background spectra is not fully alike at thesame location within a definite time as a result of effort of spectrometer andsurroundings.Their difference is also spectra with definite rise and fall.Discriminantclassifies it as agent.

野外实时鉴别时，由于光谱仪，环境等因素的影响，同一位置间隔一段时间的两条背景光谱并不完全重合，它们之间的差，也是一条有一定起伏的光谱，鉴别器有时也把它当作战剂报警。

Based on the extensive summarization of the existing studies, a series of studies including feature extraction and selection of target discrimination, the design of discriminator, and so on are done.

在全面系统地总结前人工作的基础上，对鉴别的特征提取、特征选择、鉴别器的设计等展开了系列的研究。

EMA was the most effective antibody for differentiating chordoid meningioma from skeletal myxoid chondrosarcoma, low-grade chondrosarcoma, and enchondroma, whereas D2-40 was the most effective antibody for differentiating chordoid meningioma from extraskeletal myxoid chondrosarcoma and chordoma.

EMA是鉴别脊索样脑膜瘤和骨的黏液样软骨肉瘤、低级别软骨肉瘤、内生性软骨瘤最有效的抗体，而D2-40则是鉴别脊索样脑膜瘤和骨外黏液样软骨肉瘤、脊索瘤最有效的抗体。

The differential diagnosis contains a tethered spinal cord, where there also is a low-lying spinal cord with or without thickened or fatty filum, but there is no caudal dysgenesis. However, clinically this is hard to distinguish from CRS.

鉴别诊断包括脊髓栓系，同样表现为脊髓低位伴有或不伴有增厚或脂性的终丝，但是没有尾部发育不全，然而临床难以与CRS鉴别。

The diagnostic criteria,dif-ferential diagnosis and histogenesis of the disease were discussed.

目的 研究喉骨肉瘤的临床病理特征，诊断及鉴别诊断，探索该肿瘤的组织来源方法对1例喉骨肉瘤进行组织形态学和免疫组化研究，结合文献对本病的诊断标准、鉴别诊断及组织来源进行探讨。

alcl was not uncommon in children. the differential diagnoses included malgnant histiocytosis, t zone or pleomorphic t-cell lymphoma, hodgkins lymphoma, mycosis fungoides, and metastatic carcinoma. immunohistochemical study cd30, cd15, lca and ema were very helpful for diagnosis and differential diagnosis.

小儿间变性大细胞性淋巴瘤并不少见，需与恶性组织细胞增生症、t区或多形t淋巴瘤、霍奇金淋巴瘤、蕈样霉菌病和转移性癌等鉴别。cd30、cd15、lca和ema免疫酶标检查对诊断及鉴别诊断十分有用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。