共查询到19条相似文献,搜索用时 62 毫秒
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遗传算法在分析化学中的应用 总被引:6,自引:0,他引:6
遗传算法是基于自然界生物进化基本法进而发展起来的一类新算法,在优化过程中,它无需体系的选验知识,能在许多局部较优中找到全局最优点,是一种全局最优化方法,能有效地处理复杂的非线性问题,有广阔的发展前景,目前在分析化学领域已经有多方面应用,本文简要地介绍遗传算法的原理及其在分析化学等方面的若干应用。 相似文献
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化学计量学在电分析化学中的应用 总被引:8,自引:2,他引:8
本文对化学计量学各种方法,诸如多元校正,因子分析,信号处理,参数估计,模式识别等电分析化学中的应用作了回顾及评述,指出了化学计量学电分析化学中应用的良好前景。 相似文献
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分析化学计量学中的新方法——小波分析 总被引:14,自引:8,他引:14
小波分析在分析信号处理中具有诸多显著的优点。本文介绍了小波分析的一般描述,综述了化学计量学在的小波新方法,并展望了小波分析在分析化学计量学中的应用前景。 相似文献
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法定计理单位在分析化学领域中的正确应用 总被引:1,自引:0,他引:1
对分析化学领域中常见的法定计量单位与其对应的废弃形式进行了比较,指出了应用中常 错误,并汇集了该领域中有关计量单位表述的正确范例。 相似文献
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分析化学中非线性多元函数拟合的遗传算法 总被引:4,自引:2,他引:4
本文提出分析化学中非线性多元函数拟合的遗传算法,并以一组试验数据为对象,尝试了遗传算法的效果。结果表明,遗传算法性能良好,可望成为分析化学中各类非线性函数拟合,曲线校正的有效方法。 相似文献
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《Analytical letters》2012,45(1-3):411-430
A novel calibration methodology named ‘the generalized calibration strategy’ (GCS) is presented that is aimed at verifying and improving the accuracy of analytical determinations. It is based on integration of calibration methods together with such operations as standard addition and sample dilution. At each stage of the sample dilution, the analytical result is estimated on the basis of six values, which are differently resistant to errors caused by interference and non-linearity effects. The process of stepwise elimination of both effects is controlled by comparison of these values. A dedicated flow system is presented. The GCS can be adapted to calibration by all well-known methods: conventional, internal standard, and indirect. This novel calibration strategy has been tested on indirect determination of chlorites in water samples by UV/Vis spectrophotometry. 相似文献
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A three-layer artificial neural network model with back-propagation of error is used to treat potentiometric acid-base titration data for estimating the concentrations of individual components in polybasic weak acid mixtures. The network's architecture and parameters were optimized and an empirical rule for dynamically adjusting the learning rate is put forward to improve the network's performance. Satisfactory prediction results were obtained for three-component samples containing maleic acid, propandioic acid and succinic acid with an average relative error of 4.5%. 相似文献
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人工神经网络及其在分析化学中的应用 总被引:31,自引:1,他引:31
人工神经网络是一种新兴的计算方法,有着广阔的发展前途,目前在分析化学领域已经有了多方面的应用。本文简要介绍了人工神经网络的原理及其在分析化学中的应用。 相似文献
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Prof. Dr. Johann Gasteiger 《Chemphyschem》2020,21(20):2233-2242
Chemists have to a large extent gained their knowledge by doing experiments and thus gather data. By putting various data together and then analyzing them, chemists have fostered their understanding of chemistry. Since the 1960s, computer methods have been developed to perform this process from data to information to knowledge. Simultaneously, methods were developed for assisting chemists in solving their fundamental questions such as the prediction of chemical, physical, or biological properties, the design of organic syntheses, and the elucidation of the structure of molecules. This eventually led to a discipline of its own: chemoinformatics. Chemoinformatics has found important applications in the fields of drug discovery, analytical chemistry, organic chemistry, agrichemical research, food science, regulatory science, material science, and process control. From its inception, chemoinformatics has utilized methods from artificial intelligence, an approach that has recently gained more momentum. 相似文献
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模式识别及其在分析化学中的应用 总被引:4,自引:0,他引:4
本文较系统地回顾了化学模式识别在分析化学领域近年来的发展,并涉及到与分析化学相关的生物、医学、环境科学、电子、食品科学中的应用,对分析化学模式识别相结合的发展趋势做了评述。 相似文献
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