Comparative Visualization and Analysis for GCxGC

描述（由申请人提供）：项目概述。该项目将研究和开发有效的信息技术，用于综合二维气相色谱（GCxGC）生成的复杂数据的比较分析和可视化。GCxGC是一种新兴技术，与传统GC相比，它提供了更大的分离能力、更好的信噪比和更高的维保留-结构关系。在广泛的公共卫生和其他应用中使用GCxGC的主要挑战是难以分析和解释它产生的大量复杂数据。GCxGC数据的数量和复杂性要求研究和开发新的信息技术。该项目将开发和演示用于GCxGC数据集比较分析的创新方法和工具。本研究和开发的预期结果包括基于pca的化学指纹识别方法，用于样本分类的具有化学约束的决策树，用于模板和基于约束的匹配和分类的遗传规划，以及用于比较GCxGC分析的可视化方法。这些方法将在商业软件中实现，这些软件将支持研究人员和实验室分析人员进行广泛的商业应用，包括医疗保健、环境监测和化学处理。在有效信息技术的支持下，GCxGC的强大功能将使人们更好地了解化学成分和过程，为未来的科学进步和发现奠定基础。与公共卫生相关。今天，一些先进的实验室正在开拓GCxGC的各种应用，如空气，土壤，食物和水的暴露剖面的环境监测；血液、尿液、牛奶和呼吸样本中有毒产物的鉴定和定量；以及定性和定量代谢组学，以提供生物体的生化状态或生化表型的整体视图。这些应用中的许多分析需要对样品进行详细的化学比较，例如监测变化，与参考标准进行比较，化学匹配或“指纹”，以及分类。GCxGC是用于这种比较分析的强大的新技术。该提案将提供创新的信息技术，以支持这些应用中的用户。

DESCRIPTION (provided by applicant): Project Summary. This project will investigate and develop effective information technologies for comparative analysis and visualization of complex data generated by comprehensive two-dimensional gas chromatography (GCxGC). GCxGC is an emerging technology that provides an order-of-magnitude greater separation capacity, significantly better signal-to-noise ratio, and higher dimensional retention-structure relations than traditional GC. The principal challenge for utilization of GCxGC, in a wide range of public-health and other applications, is the difficulty of analyzing and interpreting the large, complex data it generates. The quantity and complexity of GCxGC data necessitates the investigation and development of new information technologies. This project will develop and demonstrate innovative methods and tools for comparative analysis of GCxGC datasets. The expected results of this research and development include a PCA-based method for chemical fingerprinting, decision trees with chemical constraints for sample classification, genetic programming for template and constraint-based matching and classification, and visualization methods for comparative GCxGC analyses. These methods will be implemented in commercial software that will support researchers and laboratory analysts in a wide range of commercial applications, including health care, environmental monitoring, and chemical processing. The power of GCxGC, supported by effective information technologies, will enable better understanding of chemical compositions and processes, a foundation for future scientific advances and discoveries. Relevance to Public Health. Today, a few advanced laboratories are pioneering GCxGC for a variety of applications such as environmental monitoring of exposure profiles in air, soil, food, and water; identification and quantification of toxic products in blood, urine, milk, and breath samples; and qualitative and quantitative metabolomics to provide a holistic view of the biochemical status or biochemical phenotype of an organism. Many analyses in these applications require detailed chemical comparisons of samples, e.g..monitoring changes, comparison to reference standards, chemical matching or "fingerprinting", and classification. GCxGC is a powerful new technology for such comparative analyses. This proposal will provide innovative information technologies to support users in these applications.